882 verilog/sd2snes_cx4/cx4.v
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160 verilog/sd2snes_cx4/dac.v
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`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 19:26:11 07/23/2010
// Design Name:
// Module Name: dac_test
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module dac(
input clkin,
input sysclk,
input we,
input[10:0] pgm_address,
input[7:0] pgm_data,
input[7:0] volume,
input vol_latch,
input play,
input reset,
output sdout,
output lrck,
output mclk,
output DAC_STATUS
);

reg[8:0] dac_address_r;
wire[8:0] dac_address = dac_address_r;

wire[31:0] dac_data;
assign DAC_STATUS = dac_address_r[8];
reg[7:0] vol_reg;
reg[7:0] vol_target_reg;
reg[1:0] vol_latch_reg;
reg vol_valid;
reg[2:0] sysclk_sreg;
wire sysclk_rising = (sysclk_sreg[2:1] == 2'b01);

reg [25:0] interpol_count;

always @(posedge clkin) begin
sysclk_sreg <= {sysclk_sreg[1:0], sysclk};
end

dac_buf snes_dac_buf (
.clka(clkin),
.wea(~we), // Bus [0 : 0]
.addra(pgm_address), // Bus [10 : 0]
.dina(pgm_data), // Bus [7 : 0]
.clkb(clkin),
.addrb(dac_address), // Bus [8 : 0]
.doutb(dac_data)); // Bus [31 : 0]

reg [8:0] cnt;
reg [15:0] smpcnt;
reg [1:0] samples;
reg [15:0] smpshift;

assign mclk = cnt[2]; // mclk = clk/8
assign lrck = cnt[8]; // lrck = mclk/128
wire sclk = cnt[3]; // sclk = lrck*32

reg [2:0] lrck_sreg;
reg [2:0] sclk_sreg;
wire lrck_rising = ({lrck_sreg[2:1]} == 2'b01);
wire lrck_falling = ({lrck_sreg[2:1]} == 2'b10);

wire sclk_rising = ({sclk_sreg[2:1]} == 2'b01);

wire vol_latch_rising = (vol_latch_reg[1:0] == 2'b01);
reg sdout_reg;
assign sdout = sdout_reg;

reg [1:0] reset_sreg;
wire reset_rising = (reset_sreg[1:0] == 2'b01);

reg play_r;

initial begin
cnt = 9'h100;
smpcnt = 16'b0;
lrck_sreg = 2'b11;
sclk_sreg = 1'b0;
dac_address_r = 10'b0;
vol_valid = 1'b0;
vol_latch_reg = 1'b0;
vol_reg = 8'h0;
vol_target_reg = 8'hff;
samples <= 2'b00;
end

always @(posedge clkin) begin
if(reset_rising) begin
dac_address_r <= 0;
interpol_count <= 0;
end else if(sysclk_rising) begin
if(interpol_count > 59378938) begin
interpol_count <= interpol_count + 122500 - 59501439;
dac_address_r <= dac_address_r + play_r;
end else begin
interpol_count <= interpol_count + 122500;
end
end
end

always @(posedge clkin) begin
cnt <= cnt + 1;
lrck_sreg <= {lrck_sreg[1:0], lrck};
sclk_sreg <= {sclk_sreg[1:0], sclk};
vol_latch_reg <= {vol_latch_reg[0], vol_latch};
play_r <= play;
reset_sreg <= {reset_sreg[0], reset};
end

always @(posedge clkin) begin
if (vol_latch_rising) begin
vol_valid <= 1'b1;
end
else if(vol_valid) begin
vol_target_reg <= volume;
vol_valid <= 1'b0;
end
end

// ramp volume only every 4 samples
always @(posedge clkin) begin
if (lrck_rising && &samples[1:0]) begin
if(vol_reg > vol_target_reg)
vol_reg <= vol_reg - 1;
else if(vol_reg < vol_target_reg)
vol_reg <= vol_reg + 1;
end
end

always @(posedge clkin) begin
if (lrck_rising) begin // right channel
smpshift <= (({16'h0, dac_data[31:16]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
samples <= samples + 1;
end else if (lrck_falling) begin // left channel
smpshift <= (({16'h0, dac_data[15:0]^16'h8000} * vol_reg) >> 8) ^ 16'h8000;
end else begin
if (sclk_rising) begin
smpcnt <= smpcnt + 1;
sdout_reg <= smpshift[15];
smpshift <= {smpshift[14:0], 1'b0};
end
end
end

endmodule
72 verilog/sd2snes_cx4/dcm.v
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`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 13:06:52 06/28/2009
// Design Name:
// Module Name: dcm
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module my_dcm (
input CLKIN,
output CLKFX,
output LOCKED,
input RST,
output[7:0] STATUS
);

// DCM: Digital Clock Manager Circuit
// Spartan-3
// Xilinx HDL Language Template, version 11.1

DCM #(
.SIM_MODE("SAFE"), // Simulation: "SAFE" vs. "FAST", see "Synthesis and Simulation Design Guide" for details
.CLKDV_DIVIDE(2.0), // Divide by: 1.5,2.0,2.5,3.0,3.5,4.0,4.5,5.0,5.5,6.0,6.5
// 7.0,7.5,8.0,9.0,10.0,11.0,12.0,13.0,14.0,15.0 or 16.0
.CLKFX_DIVIDE(1), // Can be any integer from 1 to 32
.CLKFX_MULTIPLY(4), // Can be any integer from 2 to 32
.CLKIN_DIVIDE_BY_2("FALSE"), // TRUE/FALSE to enable CLKIN divide by two feature
.CLKIN_PERIOD(41.667), // Specify period of input clock
.CLKOUT_PHASE_SHIFT("NONE"), // Specify phase shift of NONE, FIXED or VARIABLE
.CLK_FEEDBACK("NONE"), // Specify clock feedback of NONE, 1X or 2X
.DESKEW_ADJUST("SYSTEM_SYNCHRONOUS"), // SOURCE_SYNCHRONOUS, SYSTEM_SYNCHRONOUS or
// an integer from 0 to 15
.DFS_FREQUENCY_MODE("LOW"), // HIGH or LOW frequency mode for frequency synthesis
.DLL_FREQUENCY_MODE("LOW"), // HIGH or LOW frequency mode for DLL
.DUTY_CYCLE_CORRECTION("TRUE"), // Duty cycle correction, TRUE or FALSE
.FACTORY_JF(16'hFFFF), // FACTORY JF values
// .LOC("DCM_X0Y0"),
.PHASE_SHIFT(0), // Amount of fixed phase shift from -255 to 255
.STARTUP_WAIT("TRUE") // Delay configuration DONE until DCM LOCK, TRUE/FALSE
) DCM_inst (
.CLK0(CLK0), // 0 degree DCM CLK output
.CLK180(CLK180), // 180 degree DCM CLK output
.CLK270(CLK270), // 270 degree DCM CLK output
.CLK2X(CLK2X), // 2X DCM CLK output
.CLK2X180(CLK2X180), // 2X, 180 degree DCM CLK out
.CLK90(CLK90), // 90 degree DCM CLK output
.CLKDV(CLKDV), // Divided DCM CLK out (CLKDV_DIVIDE)
.CLKFX(CLKFX), // DCM CLK synthesis out (M/D)
.CLKFX180(CLKFX180), // 180 degree CLK synthesis out
.LOCKED(LOCKED), // DCM LOCK status output
.PSDONE(PSDONE), // Dynamic phase adjust done output
.STATUS(STATUS), // 8-bit DCM status bits output
.CLKFB(CLKFB), // DCM clock feedback
.CLKIN(CLKIN), // Clock input (from IBUFG, BUFG or DCM)
.PSCLK(PSCLK), // Dynamic phase adjust clock input
.PSEN(PSEN), // Dynamic phase adjust enable input
.PSINCDEC(PSINCDEC), // Dynamic phase adjust increment/decrement
.RST(RST) // DCM asynchronous reset input
);
endmodule
187 verilog/sd2snes_cx4/ipcore_dir/cx4_datram.v
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/*******************************************************************************
* This file is owned and controlled by Xilinx and must be used solely *
* for design, simulation, implementation and creation of design files *
* limited to Xilinx devices or technologies. Use with non-Xilinx *
* devices or technologies is expressly prohibited and immediately *
* terminates your license. *
* *
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" SOLELY *
* FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR XILINX DEVICES. BY *
* PROVIDING THIS DESIGN, CODE, OR INFORMATION AS ONE POSSIBLE *
* IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, XILINX IS *
* MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE FROM ANY *
* CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING ANY *
* RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY *
* DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE *
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR *
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF *
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE. *
* *
* Xilinx products are not intended for use in life support appliances, *
* devices, or systems. Use in such applications are expressly *
* prohibited. *
* *
* (c) Copyright 1995-2011 Xilinx, Inc. *
* All rights reserved. *
*******************************************************************************/
// You must compile the wrapper file cx4_datram.v when simulating
// the core, cx4_datram. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

`timescale 1ns/1ps

module cx4_datram(
clka,
wea,
addra,
dina,
douta,
clkb,
web,
addrb,
dinb,
doutb
);

input clka;
input [0 : 0] wea;
input [11 : 0] addra;
input [7 : 0] dina;
output [7 : 0] douta;
input clkb;
input [0 : 0] web;
input [11 : 0] addrb;
input [7 : 0] dinb;
output [7 : 0] doutb;

// synthesis translate_off

BLK_MEM_GEN_V6_2 #(
.C_ADDRA_WIDTH(12),
.C_ADDRB_WIDTH(12),
.C_ALGORITHM(1),
.C_AXI_ID_WIDTH(4),
.C_AXI_SLAVE_TYPE(0),
.C_AXI_TYPE(1),
.C_BYTE_SIZE(9),
.C_COMMON_CLK(1),
.C_DEFAULT_DATA("77"),
.C_DISABLE_WARN_BHV_COLL(0),
.C_DISABLE_WARN_BHV_RANGE(0),
.C_FAMILY("spartan3"),
.C_HAS_AXI_ID(0),
.C_HAS_ENA(0),
.C_HAS_ENB(0),
.C_HAS_INJECTERR(0),
.C_HAS_MEM_OUTPUT_REGS_A(0),
.C_HAS_MEM_OUTPUT_REGS_B(0),
.C_HAS_MUX_OUTPUT_REGS_A(0),
.C_HAS_MUX_OUTPUT_REGS_B(0),
.C_HAS_REGCEA(0),
.C_HAS_REGCEB(0),
.C_HAS_RSTA(0),
.C_HAS_RSTB(0),
.C_HAS_SOFTECC_INPUT_REGS_A(0),
.C_HAS_SOFTECC_OUTPUT_REGS_B(0),
.C_INIT_FILE_NAME("no_coe_file_loaded"),
.C_INITA_VAL("0"),
.C_INITB_VAL("0"),
.C_INTERFACE_TYPE(0),
.C_LOAD_INIT_FILE(0),
.C_MEM_TYPE(2),
.C_MUX_PIPELINE_STAGES(0),
.C_PRIM_TYPE(1),
.C_READ_DEPTH_A(3072),
.C_READ_DEPTH_B(3072),
.C_READ_WIDTH_A(8),
.C_READ_WIDTH_B(8),
.C_RST_PRIORITY_A("CE"),
.C_RST_PRIORITY_B("CE"),
.C_RST_TYPE("SYNC"),
.C_RSTRAM_A(0),
.C_RSTRAM_B(0),
.C_SIM_COLLISION_CHECK("ALL"),
.C_USE_BYTE_WEA(0),
.C_USE_BYTE_WEB(0),
.C_USE_DEFAULT_DATA(1),
.C_USE_ECC(0),
.C_USE_SOFTECC(0),
.C_WEA_WIDTH(1),
.C_WEB_WIDTH(1),
.C_WRITE_DEPTH_A(3072),
.C_WRITE_DEPTH_B(3072),
.C_WRITE_MODE_A("WRITE_FIRST"),
.C_WRITE_MODE_B("WRITE_FIRST"),
.C_WRITE_WIDTH_A(8),
.C_WRITE_WIDTH_B(8),
.C_XDEVICEFAMILY("spartan3")
)
inst (
.CLKA(clka),
.WEA(wea),
.ADDRA(addra),
.DINA(dina),
.DOUTA(douta),
.CLKB(clkb),
.WEB(web),
.ADDRB(addrb),
.DINB(dinb),
.DOUTB(doutb),
.RSTA(),
.ENA(),
.REGCEA(),
.RSTB(),
.ENB(),
.REGCEB(),
.INJECTSBITERR(),
.INJECTDBITERR(),
.SBITERR(),
.DBITERR(),
.RDADDRECC(),
.S_ACLK(),
.S_ARESETN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.S_AXI_INJECTSBITERR(),
.S_AXI_INJECTDBITERR(),
.S_AXI_SBITERR(),
.S_AXI_DBITERR(),
.S_AXI_RDADDRECC()
);

// synthesis translate_on

endmodule
105 verilog/sd2snes_cx4/ipcore_dir/cx4_datram.xco
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@@ -0,0 +1,105 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Sun Oct 16 18:54:12 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:blk_mem_gen:6.2
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Other
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Block_Memory_Generator xilinx.com:ip:blk_mem_gen:6.2
# END Select
# BEGIN Parameters
CSET additional_inputs_for_power_estimation=false
CSET algorithm=Minimum_Area
CSET assume_synchronous_clk=true
CSET axi_id_width=4
CSET axi_slave_type=Memory_Slave
CSET axi_type=AXI4_Full
CSET byte_size=9
CSET coe_file=no_coe_file_loaded
CSET collision_warnings=ALL
CSET component_name=cx4_datram
CSET disable_collision_warnings=false
CSET disable_out_of_range_warnings=false
CSET ecc=false
CSET ecctype=No_ECC
CSET enable_a=Always_Enabled
CSET enable_b=Always_Enabled
CSET error_injection_type=Single_Bit_Error_Injection
CSET fill_remaining_memory_locations=true
CSET interface_type=Native
CSET load_init_file=false
CSET memory_type=True_Dual_Port_RAM
CSET operating_mode_a=WRITE_FIRST
CSET operating_mode_b=WRITE_FIRST
CSET output_reset_value_a=0
CSET output_reset_value_b=0
CSET pipeline_stages=0
CSET port_a_clock=100
CSET port_a_enable_rate=100
CSET port_a_write_rate=50
CSET port_b_clock=100
CSET port_b_enable_rate=100
CSET port_b_write_rate=50
CSET primitive=8kx2
CSET read_width_a=8
CSET read_width_b=8
CSET register_porta_input_of_softecc=false
CSET register_porta_output_of_memory_core=false
CSET register_porta_output_of_memory_primitives=false
CSET register_portb_output_of_memory_core=false
CSET register_portb_output_of_memory_primitives=false
CSET register_portb_output_of_softecc=false
CSET remaining_memory_locations=77
CSET reset_memory_latch_a=false
CSET reset_memory_latch_b=false
CSET reset_priority_a=CE
CSET reset_priority_b=CE
CSET reset_type=SYNC
CSET softecc=false
CSET use_axi_id=false
CSET use_byte_write_enable=false
CSET use_error_injection_pins=false
CSET use_regcea_pin=false
CSET use_regceb_pin=false
CSET use_rsta_pin=false
CSET use_rstb_pin=false
CSET write_depth_a=3072
CSET write_width_a=8
CSET write_width_b=8
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-03-11T08:24:14.000Z
# END Extra information
GENERATE
# CRC: a7d60fbd
72 verilog/sd2snes_cx4/ipcore_dir/cx4_datram.xise
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@@ -0,0 +1,72 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">

<header>
<!-- ISE source project file created by Project Navigator. -->
<!-- -->
<!-- This file contains project source information including a list of -->
<!-- project source files, project and process properties. This file, -->
<!-- along with the project source files, is sufficient to open and -->
<!-- implement in ISE Project Navigator. -->
<!-- -->
<!-- Copyright (c) 1995-2011 Xilinx, Inc. All rights reserved. -->
</header>

<version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>

<files>
<file xil_pn:name="cx4_datram.ngc" xil_pn:type="FILE_NGC">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
<association xil_pn:name="Implementation" xil_pn:seqID="3"/>
</file>
<file xil_pn:name="cx4_datram.v" xil_pn:type="FILE_VERILOG">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="Implementation" xil_pn:seqID="5"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="5"/>
</file>
</files>

<properties>
<property xil_pn:name="Auto Implementation Top" xil_pn:value="false" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device" xil_pn:value="xc3s400" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device Family" xil_pn:value="Spartan3" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Stop View" xil_pn:value="PreSynthesis" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top" xil_pn:value="Module|cx4_datram" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top File" xil_pn:value="cx4_datram.ngc" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/cx4_datram" xil_pn:valueState="non-default"/>
<property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
<property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
<property xil_pn:name="Project Generator" xil_pn:value="CoreGen" xil_pn:valueState="non-default"/>
<property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
<property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
<property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
<property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
<!-- -->
<!-- The following properties are for internal use only. These should not be modified.-->
<!-- -->
<property xil_pn:name="PROP_DesignName" xil_pn:value="cx4_datram" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan3" xil_pn:valueState="default"/>
<property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2011-10-16T20:54:53" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="1A4EA94132742A5DE9F22CC590B9E9A7" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
</properties>

<bindings/>

<libraries/>

<autoManagedFiles>
<!-- The following files are identified by `include statements in verilog -->
<!-- source files and are automatically managed by Project Navigator. -->
<!-- -->
<!-- Do not hand-edit this section, as it will be overwritten when the -->
<!-- project is analyzed based on files automatically identified as -->
<!-- include files. -->
</autoManagedFiles>

</project>
181 verilog/sd2snes_cx4/ipcore_dir/cx4_datrom.v
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@@ -0,0 +1,181 @@
/*******************************************************************************
* This file is owned and controlled by Xilinx and must be used solely *
* for design, simulation, implementation and creation of design files *
* limited to Xilinx devices or technologies. Use with non-Xilinx *
* devices or technologies is expressly prohibited and immediately *
* terminates your license. *
* *
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" SOLELY *
* FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR XILINX DEVICES. BY *
* PROVIDING THIS DESIGN, CODE, OR INFORMATION AS ONE POSSIBLE *
* IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, XILINX IS *
* MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE FROM ANY *
* CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING ANY *
* RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY *
* DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE *
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR *
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF *
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE. *
* *
* Xilinx products are not intended for use in life support appliances, *
* devices, or systems. Use in such applications are expressly *
* prohibited. *
* *
* (c) Copyright 1995-2011 Xilinx, Inc. *
* All rights reserved. *
*******************************************************************************/
// You must compile the wrapper file cx4_datrom.v when simulating
// the core, cx4_datrom. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

`timescale 1ns/1ps

module cx4_datrom(
clka,
wea,
addra,
dina,
clkb,
addrb,
doutb
);

input clka;
input [0 : 0] wea;
input [9 : 0] addra;
input [23 : 0] dina;
input clkb;
input [9 : 0] addrb;
output [23 : 0] doutb;

// synthesis translate_off

BLK_MEM_GEN_V6_2 #(
.C_ADDRA_WIDTH(10),
.C_ADDRB_WIDTH(10),
.C_ALGORITHM(1),
.C_AXI_ID_WIDTH(4),
.C_AXI_SLAVE_TYPE(0),
.C_AXI_TYPE(1),
.C_BYTE_SIZE(9),
.C_COMMON_CLK(1),
.C_DEFAULT_DATA("0"),
.C_DISABLE_WARN_BHV_COLL(0),
.C_DISABLE_WARN_BHV_RANGE(0),
.C_FAMILY("spartan3"),
.C_HAS_AXI_ID(0),
.C_HAS_ENA(0),
.C_HAS_ENB(0),
.C_HAS_INJECTERR(0),
.C_HAS_MEM_OUTPUT_REGS_A(0),
.C_HAS_MEM_OUTPUT_REGS_B(0),
.C_HAS_MUX_OUTPUT_REGS_A(0),
.C_HAS_MUX_OUTPUT_REGS_B(0),
.C_HAS_REGCEA(0),
.C_HAS_REGCEB(0),
.C_HAS_RSTA(0),
.C_HAS_RSTB(0),
.C_HAS_SOFTECC_INPUT_REGS_A(0),
.C_HAS_SOFTECC_OUTPUT_REGS_B(0),
.C_INIT_FILE_NAME("no_coe_file_loaded"),
.C_INITA_VAL("0"),
.C_INITB_VAL("0"),
.C_INTERFACE_TYPE(0),
.C_LOAD_INIT_FILE(0),
.C_MEM_TYPE(1),
.C_MUX_PIPELINE_STAGES(0),
.C_PRIM_TYPE(1),
.C_READ_DEPTH_A(1024),
.C_READ_DEPTH_B(1024),
.C_READ_WIDTH_A(24),
.C_READ_WIDTH_B(24),
.C_RST_PRIORITY_A("CE"),
.C_RST_PRIORITY_B("CE"),
.C_RST_TYPE("SYNC"),
.C_RSTRAM_A(0),
.C_RSTRAM_B(0),
.C_SIM_COLLISION_CHECK("ALL"),
.C_USE_BYTE_WEA(0),
.C_USE_BYTE_WEB(0),
.C_USE_DEFAULT_DATA(0),
.C_USE_ECC(0),
.C_USE_SOFTECC(0),
.C_WEA_WIDTH(1),
.C_WEB_WIDTH(1),
.C_WRITE_DEPTH_A(1024),
.C_WRITE_DEPTH_B(1024),
.C_WRITE_MODE_A("WRITE_FIRST"),
.C_WRITE_MODE_B("WRITE_FIRST"),
.C_WRITE_WIDTH_A(24),
.C_WRITE_WIDTH_B(24),
.C_XDEVICEFAMILY("spartan3")
)
inst (
.CLKA(clka),
.WEA(wea),
.ADDRA(addra),
.DINA(dina),
.CLKB(clkb),
.ADDRB(addrb),
.DOUTB(doutb),
.RSTA(),
.ENA(),
.REGCEA(),
.DOUTA(),
.RSTB(),
.ENB(),
.REGCEB(),
.WEB(),
.DINB(),
.INJECTSBITERR(),
.INJECTDBITERR(),
.SBITERR(),
.DBITERR(),
.RDADDRECC(),
.S_ACLK(),
.S_ARESETN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.S_AXI_INJECTSBITERR(),
.S_AXI_INJECTDBITERR(),
.S_AXI_SBITERR(),
.S_AXI_DBITERR(),
.S_AXI_RDADDRECC()
);

// synthesis translate_on

endmodule
105 verilog/sd2snes_cx4/ipcore_dir/cx4_datrom.xco
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@@ -0,0 +1,105 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Sun Oct 16 12:57:23 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:blk_mem_gen:6.2
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Other
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Block_Memory_Generator xilinx.com:ip:blk_mem_gen:6.2
# END Select
# BEGIN Parameters
CSET additional_inputs_for_power_estimation=false
CSET algorithm=Minimum_Area
CSET assume_synchronous_clk=true
CSET axi_id_width=4
CSET axi_slave_type=Memory_Slave
CSET axi_type=AXI4_Full
CSET byte_size=9
CSET coe_file=no_coe_file_loaded
CSET collision_warnings=ALL
CSET component_name=cx4_datrom
CSET disable_collision_warnings=false
CSET disable_out_of_range_warnings=false
CSET ecc=false
CSET ecctype=No_ECC
CSET enable_a=Always_Enabled
CSET enable_b=Always_Enabled
CSET error_injection_type=Single_Bit_Error_Injection
CSET fill_remaining_memory_locations=false
CSET interface_type=Native
CSET load_init_file=false
CSET memory_type=Simple_Dual_Port_RAM
CSET operating_mode_a=WRITE_FIRST
CSET operating_mode_b=WRITE_FIRST
CSET output_reset_value_a=0
CSET output_reset_value_b=0
CSET pipeline_stages=0
CSET port_a_clock=100
CSET port_a_enable_rate=100
CSET port_a_write_rate=50
CSET port_b_clock=100
CSET port_b_enable_rate=100
CSET port_b_write_rate=0
CSET primitive=8kx2
CSET read_width_a=24
CSET read_width_b=24
CSET register_porta_input_of_softecc=false
CSET register_porta_output_of_memory_core=false
CSET register_porta_output_of_memory_primitives=false
CSET register_portb_output_of_memory_core=false
CSET register_portb_output_of_memory_primitives=false
CSET register_portb_output_of_softecc=false
CSET remaining_memory_locations=0
CSET reset_memory_latch_a=false
CSET reset_memory_latch_b=false
CSET reset_priority_a=CE
CSET reset_priority_b=CE
CSET reset_type=SYNC
CSET softecc=false
CSET use_axi_id=false
CSET use_byte_write_enable=false
CSET use_error_injection_pins=false
CSET use_regcea_pin=false
CSET use_regceb_pin=false
CSET use_rsta_pin=false
CSET use_rstb_pin=false
CSET write_depth_a=1024
CSET write_width_a=24
CSET write_width_b=24
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-03-11T08:24:14.000Z
# END Extra information
GENERATE
# CRC: a25bf9a3
72 verilog/sd2snes_cx4/ipcore_dir/cx4_datrom.xise
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@@ -0,0 +1,72 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">

<header>
<!-- ISE source project file created by Project Navigator. -->
<!-- -->
<!-- This file contains project source information including a list of -->
<!-- project source files, project and process properties. This file, -->
<!-- along with the project source files, is sufficient to open and -->
<!-- implement in ISE Project Navigator. -->
<!-- -->
<!-- Copyright (c) 1995-2011 Xilinx, Inc. All rights reserved. -->
</header>

<version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>

<files>
<file xil_pn:name="cx4_datrom.ngc" xil_pn:type="FILE_NGC">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
<association xil_pn:name="Implementation" xil_pn:seqID="3"/>
</file>
<file xil_pn:name="cx4_datrom.v" xil_pn:type="FILE_VERILOG">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="Implementation" xil_pn:seqID="5"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="5"/>
</file>
</files>

<properties>
<property xil_pn:name="Auto Implementation Top" xil_pn:value="false" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device" xil_pn:value="xc3s400" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device Family" xil_pn:value="Spartan3" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Stop View" xil_pn:value="PreSynthesis" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top" xil_pn:value="Module|cx4_datrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top File" xil_pn:value="cx4_datrom.ngc" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/cx4_datrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
<property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
<property xil_pn:name="Project Generator" xil_pn:value="CoreGen" xil_pn:valueState="non-default"/>
<property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
<property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
<property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
<property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
<!-- -->
<!-- The following properties are for internal use only. These should not be modified.-->
<!-- -->
<property xil_pn:name="PROP_DesignName" xil_pn:value="cx4_datrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan3" xil_pn:valueState="default"/>
<property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2011-10-16T14:58:14" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="3B4E0775D81ACD3D9CCAB1608687B690" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
</properties>

<bindings/>

<libraries/>

<autoManagedFiles>
<!-- The following files are identified by `include statements in verilog -->
<!-- source files and are automatically managed by Project Navigator. -->
<!-- -->
<!-- Do not hand-edit this section, as it will be overwritten when the -->
<!-- project is analyzed based on files automatically identified as -->
<!-- include files. -->
</autoManagedFiles>

</project>
2,605 verilog/sd2snes_cx4/ipcore_dir/cx4_mul.v
View file

Large diffs are not rendered by default.

68 verilog/sd2snes_cx4/ipcore_dir/cx4_mul.xco
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@@ -0,0 +1,68 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Sun Oct 30 20:22:20 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:mult_gen:11.2
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Other
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Multiplier xilinx.com:ip:mult_gen:11.2
# END Select
# BEGIN Parameters
CSET ccmimp=Distributed_Memory
CSET clockenable=true
CSET component_name=cx4_mul
CSET constvalue=129
CSET internaluser=0
CSET multiplier_construction=Use_Mults
CSET multtype=Parallel_Multiplier
CSET optgoal=Speed
CSET outputwidthhigh=47
CSET outputwidthlow=0
CSET pipestages=2
CSET portatype=Signed
CSET portawidth=24
CSET portbtype=Signed
CSET portbwidth=24
CSET roundpoint=0
CSET sclrcepriority=SCLR_Overrides_CE
CSET syncclear=false
CSET use_custom_output_width=false
CSET userounding=false
CSET zerodetect=false
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-06-21T06:26:54.000Z
# END Extra information
GENERATE
# CRC: 4f144c3
378 verilog/sd2snes_cx4/ipcore_dir/cx4_mul.xise
View file

Large diffs are not rendered by default.

181 verilog/sd2snes_cx4/ipcore_dir/cx4_pgmrom.v
View file
@@ -0,0 +1,181 @@
/*******************************************************************************
* This file is owned and controlled by Xilinx and must be used solely *
* for design, simulation, implementation and creation of design files *
* limited to Xilinx devices or technologies. Use with non-Xilinx *
* devices or technologies is expressly prohibited and immediately *
* terminates your license. *
* *
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" SOLELY *
* FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR XILINX DEVICES. BY *
* PROVIDING THIS DESIGN, CODE, OR INFORMATION AS ONE POSSIBLE *
* IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, XILINX IS *
* MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE FROM ANY *
* CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING ANY *
* RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY *
* DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE *
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR *
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF *
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE. *
* *
* Xilinx products are not intended for use in life support appliances, *
* devices, or systems. Use in such applications are expressly *
* prohibited. *
* *
* (c) Copyright 1995-2011 Xilinx, Inc. *
* All rights reserved. *
*******************************************************************************/
// You must compile the wrapper file cx4_pgmrom.v when simulating
// the core, cx4_pgmrom. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

`timescale 1ns/1ps

module cx4_pgmrom(
clka,
wea,
addra,
dina,
clkb,
addrb,
doutb
);

input clka;
input [0 : 0] wea;
input [9 : 0] addra;
input [7 : 0] dina;
input clkb;
input [8 : 0] addrb;
output [15 : 0] doutb;

// synthesis translate_off

BLK_MEM_GEN_V6_2 #(
.C_ADDRA_WIDTH(10),
.C_ADDRB_WIDTH(9),
.C_ALGORITHM(1),
.C_AXI_ID_WIDTH(4),
.C_AXI_SLAVE_TYPE(0),
.C_AXI_TYPE(1),
.C_BYTE_SIZE(9),
.C_COMMON_CLK(1),
.C_DEFAULT_DATA("0"),
.C_DISABLE_WARN_BHV_COLL(0),
.C_DISABLE_WARN_BHV_RANGE(0),
.C_FAMILY("spartan3"),
.C_HAS_AXI_ID(0),
.C_HAS_ENA(0),
.C_HAS_ENB(0),
.C_HAS_INJECTERR(0),
.C_HAS_MEM_OUTPUT_REGS_A(0),
.C_HAS_MEM_OUTPUT_REGS_B(0),
.C_HAS_MUX_OUTPUT_REGS_A(0),
.C_HAS_MUX_OUTPUT_REGS_B(0),
.C_HAS_REGCEA(0),
.C_HAS_REGCEB(0),
.C_HAS_RSTA(0),
.C_HAS_RSTB(0),
.C_HAS_SOFTECC_INPUT_REGS_A(0),
.C_HAS_SOFTECC_OUTPUT_REGS_B(0),
.C_INIT_FILE_NAME("cx4_pgmrom.mif"),
.C_INITA_VAL("0"),
.C_INITB_VAL("0"),
.C_INTERFACE_TYPE(0),
.C_LOAD_INIT_FILE(1),
.C_MEM_TYPE(1),
.C_MUX_PIPELINE_STAGES(0),
.C_PRIM_TYPE(1),
.C_READ_DEPTH_A(1024),
.C_READ_DEPTH_B(512),
.C_READ_WIDTH_A(8),
.C_READ_WIDTH_B(16),
.C_RST_PRIORITY_A("CE"),
.C_RST_PRIORITY_B("CE"),
.C_RST_TYPE("SYNC"),
.C_RSTRAM_A(0),
.C_RSTRAM_B(0),
.C_SIM_COLLISION_CHECK("ALL"),
.C_USE_BYTE_WEA(0),
.C_USE_BYTE_WEB(0),
.C_USE_DEFAULT_DATA(0),
.C_USE_ECC(0),
.C_USE_SOFTECC(0),
.C_WEA_WIDTH(1),
.C_WEB_WIDTH(1),
.C_WRITE_DEPTH_A(1024),
.C_WRITE_DEPTH_B(512),
.C_WRITE_MODE_A("WRITE_FIRST"),
.C_WRITE_MODE_B("WRITE_FIRST"),
.C_WRITE_WIDTH_A(8),
.C_WRITE_WIDTH_B(16),
.C_XDEVICEFAMILY("spartan3")
)
inst (
.CLKA(clka),
.WEA(wea),
.ADDRA(addra),
.DINA(dina),
.CLKB(clkb),
.ADDRB(addrb),
.DOUTB(doutb),
.RSTA(),
.ENA(),
.REGCEA(),
.DOUTA(),
.RSTB(),
.ENB(),
.REGCEB(),
.WEB(),
.DINB(),
.INJECTSBITERR(),
.INJECTDBITERR(),
.SBITERR(),
.DBITERR(),
.RDADDRECC(),
.S_ACLK(),
.S_ARESETN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.S_AXI_INJECTSBITERR(),
.S_AXI_INJECTDBITERR(),
.S_AXI_SBITERR(),
.S_AXI_DBITERR(),
.S_AXI_RDADDRECC()
);

// synthesis translate_on

endmodule
105 verilog/sd2snes_cx4/ipcore_dir/cx4_pgmrom.xco
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@@ -0,0 +1,105 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Sun Oct 23 22:07:47 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:blk_mem_gen:6.2
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Other
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Block_Memory_Generator xilinx.com:ip:blk_mem_gen:6.2
# END Select
# BEGIN Parameters
CSET additional_inputs_for_power_estimation=false
CSET algorithm=Minimum_Area
CSET assume_synchronous_clk=true
CSET axi_id_width=4
CSET axi_slave_type=Memory_Slave
CSET axi_type=AXI4_Full
CSET byte_size=9
CSET coe_file=/home/ikari/prj/sd2snes/verilog/sd2snes_cx4/cx4_e.coe
CSET collision_warnings=ALL
CSET component_name=cx4_pgmrom
CSET disable_collision_warnings=false
CSET disable_out_of_range_warnings=false
CSET ecc=false
CSET ecctype=No_ECC
CSET enable_a=Always_Enabled
CSET enable_b=Always_Enabled
CSET error_injection_type=Single_Bit_Error_Injection
CSET fill_remaining_memory_locations=false
CSET interface_type=Native
CSET load_init_file=true
CSET memory_type=Simple_Dual_Port_RAM
CSET operating_mode_a=WRITE_FIRST
CSET operating_mode_b=WRITE_FIRST
CSET output_reset_value_a=0
CSET output_reset_value_b=0
CSET pipeline_stages=0
CSET port_a_clock=100
CSET port_a_enable_rate=100
CSET port_a_write_rate=50
CSET port_b_clock=100
CSET port_b_enable_rate=100
CSET port_b_write_rate=0
CSET primitive=8kx2
CSET read_width_a=8
CSET read_width_b=16
CSET register_porta_input_of_softecc=false
CSET register_porta_output_of_memory_core=false
CSET register_porta_output_of_memory_primitives=false
CSET register_portb_output_of_memory_core=false
CSET register_portb_output_of_memory_primitives=false
CSET register_portb_output_of_softecc=false
CSET remaining_memory_locations=0
CSET reset_memory_latch_a=false
CSET reset_memory_latch_b=false
CSET reset_priority_a=CE
CSET reset_priority_b=CE
CSET reset_type=SYNC
CSET softecc=false
CSET use_axi_id=false
CSET use_byte_write_enable=false
CSET use_error_injection_pins=false
CSET use_regcea_pin=false
CSET use_regceb_pin=false
CSET use_rsta_pin=false
CSET use_rstb_pin=false
CSET write_depth_a=1024
CSET write_width_a=8
CSET write_width_b=16
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-03-11T08:24:14.000Z
# END Extra information
GENERATE
# CRC: a9280b11
72 verilog/sd2snes_cx4/ipcore_dir/cx4_pgmrom.xise
View file
@@ -0,0 +1,72 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">

<header>
<!-- ISE source project file created by Project Navigator. -->
<!-- -->
<!-- This file contains project source information including a list of -->
<!-- project source files, project and process properties. This file, -->
<!-- along with the project source files, is sufficient to open and -->
<!-- implement in ISE Project Navigator. -->
<!-- -->
<!-- Copyright (c) 1995-2011 Xilinx, Inc. All rights reserved. -->
</header>

<version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>

<files>
<file xil_pn:name="cx4_pgmrom.ngc" xil_pn:type="FILE_NGC">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
<association xil_pn:name="Implementation" xil_pn:seqID="3"/>
</file>
<file xil_pn:name="cx4_pgmrom.v" xil_pn:type="FILE_VERILOG">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="Implementation" xil_pn:seqID="5"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="5"/>
</file>
</files>

<properties>
<property xil_pn:name="Auto Implementation Top" xil_pn:value="false" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device" xil_pn:value="xc3s400" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device Family" xil_pn:value="Spartan3" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Stop View" xil_pn:value="PreSynthesis" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top" xil_pn:value="Module|cx4_pgmrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top File" xil_pn:value="cx4_pgmrom.ngc" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/cx4_pgmrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
<property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
<property xil_pn:name="Project Generator" xil_pn:value="CoreGen" xil_pn:valueState="non-default"/>
<property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
<property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
<property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
<property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
<!-- -->
<!-- The following properties are for internal use only. These should not be modified.-->
<!-- -->
<property xil_pn:name="PROP_DesignName" xil_pn:value="cx4_pgmrom" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan3" xil_pn:valueState="default"/>
<property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2011-10-24T00:08:31" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="C14775871011A35EE55463DDAA37D8AF" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
</properties>

<bindings/>

<libraries/>

<autoManagedFiles>
<!-- The following files are identified by `include statements in verilog -->
<!-- source files and are automatically managed by Project Navigator. -->
<!-- -->
<!-- Do not hand-edit this section, as it will be overwritten when the -->
<!-- project is analyzed based on files automatically identified as -->
<!-- include files. -->
</autoManagedFiles>

</project>
181 verilog/sd2snes_cx4/ipcore_dir/dac_buf.v
View file
@@ -0,0 +1,181 @@
/*******************************************************************************
* This file is owned and controlled by Xilinx and must be used solely *
* for design, simulation, implementation and creation of design files *
* limited to Xilinx devices or technologies. Use with non-Xilinx *
* devices or technologies is expressly prohibited and immediately *
* terminates your license. *
* *
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" SOLELY *
* FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR XILINX DEVICES. BY *
* PROVIDING THIS DESIGN, CODE, OR INFORMATION AS ONE POSSIBLE *
* IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, XILINX IS *
* MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE FROM ANY *
* CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING ANY *
* RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY *
* DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE *
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR *
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF *
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE. *
* *
* Xilinx products are not intended for use in life support appliances, *
* devices, or systems. Use in such applications are expressly *
* prohibited. *
* *
* (c) Copyright 1995-2011 Xilinx, Inc. *
* All rights reserved. *
*******************************************************************************/
// You must compile the wrapper file dac_buf.v when simulating
// the core, dac_buf. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

`timescale 1ns/1ps

module dac_buf(
clka,
wea,
addra,
dina,
clkb,
addrb,
doutb
);

input clka;
input [0 : 0] wea;
input [10 : 0] addra;
input [7 : 0] dina;
input clkb;
input [8 : 0] addrb;
output [31 : 0] doutb;

// synthesis translate_off

BLK_MEM_GEN_V6_1 #(
.C_ADDRA_WIDTH(11),
.C_ADDRB_WIDTH(9),
.C_ALGORITHM(1),
.C_AXI_ID_WIDTH(4),
.C_AXI_SLAVE_TYPE(0),
.C_AXI_TYPE(1),
.C_BYTE_SIZE(9),
.C_COMMON_CLK(1),
.C_DEFAULT_DATA("0"),
.C_DISABLE_WARN_BHV_COLL(0),
.C_DISABLE_WARN_BHV_RANGE(0),
.C_FAMILY("spartan3"),
.C_HAS_AXI_ID(0),
.C_HAS_ENA(0),
.C_HAS_ENB(0),
.C_HAS_INJECTERR(0),
.C_HAS_MEM_OUTPUT_REGS_A(0),
.C_HAS_MEM_OUTPUT_REGS_B(0),
.C_HAS_MUX_OUTPUT_REGS_A(0),
.C_HAS_MUX_OUTPUT_REGS_B(0),
.C_HAS_REGCEA(0),
.C_HAS_REGCEB(0),
.C_HAS_RSTA(0),
.C_HAS_RSTB(0),
.C_HAS_SOFTECC_INPUT_REGS_A(0),
.C_HAS_SOFTECC_OUTPUT_REGS_B(0),
.C_INIT_FILE_NAME("no_coe_file_loaded"),
.C_INITA_VAL("0"),
.C_INITB_VAL("0"),
.C_INTERFACE_TYPE(0),
.C_LOAD_INIT_FILE(0),
.C_MEM_TYPE(1),
.C_MUX_PIPELINE_STAGES(0),
.C_PRIM_TYPE(1),
.C_READ_DEPTH_A(2048),
.C_READ_DEPTH_B(512),
.C_READ_WIDTH_A(8),
.C_READ_WIDTH_B(32),
.C_RST_PRIORITY_A("CE"),
.C_RST_PRIORITY_B("CE"),
.C_RST_TYPE("SYNC"),
.C_RSTRAM_A(0),
.C_RSTRAM_B(0),
.C_SIM_COLLISION_CHECK("ALL"),
.C_USE_BYTE_WEA(0),
.C_USE_BYTE_WEB(0),
.C_USE_DEFAULT_DATA(0),
.C_USE_ECC(0),
.C_USE_SOFTECC(0),
.C_WEA_WIDTH(1),
.C_WEB_WIDTH(1),
.C_WRITE_DEPTH_A(2048),
.C_WRITE_DEPTH_B(512),
.C_WRITE_MODE_A("WRITE_FIRST"),
.C_WRITE_MODE_B("WRITE_FIRST"),
.C_WRITE_WIDTH_A(8),
.C_WRITE_WIDTH_B(32),
.C_XDEVICEFAMILY("spartan3")
)
inst (
.CLKA(clka),
.WEA(wea),
.ADDRA(addra),
.DINA(dina),
.CLKB(clkb),
.ADDRB(addrb),
.DOUTB(doutb),
.RSTA(),
.ENA(),
.REGCEA(),
.DOUTA(),
.RSTB(),
.ENB(),
.REGCEB(),
.WEB(),
.DINB(),
.INJECTSBITERR(),
.INJECTDBITERR(),
.SBITERR(),
.DBITERR(),
.RDADDRECC(),
.S_ACLK(),
.S_ARESETN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.S_AXI_INJECTSBITERR(),
.S_AXI_INJECTDBITERR(),
.S_AXI_SBITERR(),
.S_AXI_DBITERR(),
.S_AXI_RDADDRECC()
);

// synthesis translate_on

endmodule
105 verilog/sd2snes_cx4/ipcore_dir/dac_buf.xco
View file
@@ -0,0 +1,105 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Mon Oct 10 19:47:34 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:blk_mem_gen:6.1
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Foundation_ISE
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Block_Memory_Generator xilinx.com:ip:blk_mem_gen:6.1
# END Select
# BEGIN Parameters
CSET additional_inputs_for_power_estimation=false
CSET algorithm=Minimum_Area
CSET assume_synchronous_clk=true
CSET axi_id_width=4
CSET axi_slave_type=Memory_Slave
CSET axi_type=AXI4_Full
CSET byte_size=9
CSET coe_file=no_coe_file_loaded
CSET collision_warnings=ALL
CSET component_name=dac_buf
CSET disable_collision_warnings=false
CSET disable_out_of_range_warnings=false
CSET ecc=false
CSET ecctype=No_ECC
CSET enable_a=Always_Enabled
CSET enable_b=Always_Enabled
CSET error_injection_type=Single_Bit_Error_Injection
CSET fill_remaining_memory_locations=false
CSET interface_type=Native
CSET load_init_file=false
CSET memory_type=Simple_Dual_Port_RAM
CSET operating_mode_a=WRITE_FIRST
CSET operating_mode_b=WRITE_FIRST
CSET output_reset_value_a=0
CSET output_reset_value_b=0
CSET pipeline_stages=0
CSET port_a_clock=100
CSET port_a_enable_rate=100
CSET port_a_write_rate=50
CSET port_b_clock=100
CSET port_b_enable_rate=100
CSET port_b_write_rate=0
CSET primitive=8kx2
CSET read_width_a=8
CSET read_width_b=32
CSET register_porta_input_of_softecc=false
CSET register_porta_output_of_memory_core=false
CSET register_porta_output_of_memory_primitives=false
CSET register_portb_output_of_memory_core=false
CSET register_portb_output_of_memory_primitives=false
CSET register_portb_output_of_softecc=false
CSET remaining_memory_locations=0
CSET reset_memory_latch_a=false
CSET reset_memory_latch_b=false
CSET reset_priority_a=CE
CSET reset_priority_b=CE
CSET reset_type=SYNC
CSET softecc=false
CSET use_axi_id=false
CSET use_byte_write_enable=false
CSET use_error_injection_pins=false
CSET use_regcea_pin=false
CSET use_regceb_pin=false
CSET use_rsta_pin=false
CSET use_rstb_pin=false
CSET write_depth_a=2048
CSET write_width_a=8
CSET write_width_b=32
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-06-21T06:43:52.000Z
# END Extra information
GENERATE
# CRC: 60863d15
79 verilog/sd2snes_cx4/ipcore_dir/dac_buf.xise
View file
@@ -0,0 +1,79 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">

<header>
<!-- ISE source project file created by Project Navigator. -->
<!-- -->
<!-- This file contains project source information including a list of -->
<!-- project source files, project and process properties. This file, -->
<!-- along with the project source files, is sufficient to open and -->
<!-- implement in ISE Project Navigator. -->
<!-- -->
<!-- Copyright (c) 1995-2011 Xilinx, Inc. All rights reserved. -->
</header>

<version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>

<files>
<file xil_pn:name="dac_buf.ngc" xil_pn:type="FILE_NGC">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="2"/>
<association xil_pn:name="Implementation" xil_pn:seqID="0"/>
</file>
<file xil_pn:name="dac_buf.v" xil_pn:type="FILE_VERILOG">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="0"/>
<association xil_pn:name="Implementation" xil_pn:seqID="0"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="5"/>
</file>
<file xil_pn:name="dac_buf.vhd" xil_pn:type="FILE_VHDL">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="1"/>
<association xil_pn:name="Implementation" xil_pn:seqID="1"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="7"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="7"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="7"/>
</file>
</files>

<properties>
<property xil_pn:name="Auto Implementation Top" xil_pn:value="false" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device" xil_pn:value="xc3s400" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device Family" xil_pn:value="Spartan3" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Stop View" xil_pn:value="PreSynthesis" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top" xil_pn:value="Architecture|dac_buf|dac_buf_a" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top File" xil_pn:value="dac_buf.vhd" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/dac_buf" xil_pn:valueState="non-default"/>
<property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
<property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
<property xil_pn:name="Project Generator" xil_pn:value="CoreGen" xil_pn:valueState="non-default"/>
<property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
<property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
<property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
<property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
<!-- -->
<!-- The following properties are for internal use only. These should not be modified.-->
<!-- -->
<property xil_pn:name="PROP_DesignName" xil_pn:value="dac_buf" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan3" xil_pn:valueState="default"/>
<property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2011-06-14T00:12:56" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="014920D0A865D4E8840F795EDFB8F8B9" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
</properties>

<bindings/>

<libraries/>

<autoManagedFiles>
<!-- The following files are identified by `include statements in verilog -->
<!-- source files and are automatically managed by Project Navigator. -->
<!-- -->
<!-- Do not hand-edit this section, as it will be overwritten when the -->
<!-- project is analyzed based on files automatically identified as -->
<!-- include files. -->
</autoManagedFiles>

</project>
181 verilog/sd2snes_cx4/ipcore_dir/msu_databuf.v
View file
@@ -0,0 +1,181 @@
/*******************************************************************************
* This file is owned and controlled by Xilinx and must be used solely *
* for design, simulation, implementation and creation of design files *
* limited to Xilinx devices or technologies. Use with non-Xilinx *
* devices or technologies is expressly prohibited and immediately *
* terminates your license. *
* *
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" SOLELY *
* FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR XILINX DEVICES. BY *
* PROVIDING THIS DESIGN, CODE, OR INFORMATION AS ONE POSSIBLE *
* IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD, XILINX IS *
* MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE FROM ANY *
* CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING ANY *
* RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY *
* DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE *
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR *
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF *
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
* PARTICULAR PURPOSE. *
* *
* Xilinx products are not intended for use in life support appliances, *
* devices, or systems. Use in such applications are expressly *
* prohibited. *
* *
* (c) Copyright 1995-2011 Xilinx, Inc. *
* All rights reserved. *
*******************************************************************************/
// You must compile the wrapper file msu_databuf.v when simulating
// the core, msu_databuf. When compiling the wrapper file, be sure to
// reference the XilinxCoreLib Verilog simulation library. For detailed
// instructions, please refer to the "CORE Generator Help".

// The synthesis directives "translate_off/translate_on" specified below are
// supported by Xilinx, Mentor Graphics and Synplicity synthesis
// tools. Ensure they are correct for your synthesis tool(s).

`timescale 1ns/1ps

module msu_databuf(
clka,
wea,
addra,
dina,
clkb,
addrb,
doutb
);

input clka;
input [0 : 0] wea;
input [13 : 0] addra;
input [7 : 0] dina;
input clkb;
input [13 : 0] addrb;
output [7 : 0] doutb;

// synthesis translate_off

BLK_MEM_GEN_V6_1 #(
.C_ADDRA_WIDTH(14),
.C_ADDRB_WIDTH(14),
.C_ALGORITHM(1),
.C_AXI_ID_WIDTH(4),
.C_AXI_SLAVE_TYPE(0),
.C_AXI_TYPE(1),
.C_BYTE_SIZE(9),
.C_COMMON_CLK(1),
.C_DEFAULT_DATA("0"),
.C_DISABLE_WARN_BHV_COLL(0),
.C_DISABLE_WARN_BHV_RANGE(0),
.C_FAMILY("spartan3"),
.C_HAS_AXI_ID(0),
.C_HAS_ENA(0),
.C_HAS_ENB(0),
.C_HAS_INJECTERR(0),
.C_HAS_MEM_OUTPUT_REGS_A(0),
.C_HAS_MEM_OUTPUT_REGS_B(0),
.C_HAS_MUX_OUTPUT_REGS_A(0),
.C_HAS_MUX_OUTPUT_REGS_B(0),
.C_HAS_REGCEA(0),
.C_HAS_REGCEB(0),
.C_HAS_RSTA(0),
.C_HAS_RSTB(0),
.C_HAS_SOFTECC_INPUT_REGS_A(0),
.C_HAS_SOFTECC_OUTPUT_REGS_B(0),
.C_INIT_FILE_NAME("no_coe_file_loaded"),
.C_INITA_VAL("0"),
.C_INITB_VAL("0"),
.C_INTERFACE_TYPE(0),
.C_LOAD_INIT_FILE(0),
.C_MEM_TYPE(1),
.C_MUX_PIPELINE_STAGES(0),
.C_PRIM_TYPE(1),
.C_READ_DEPTH_A(16384),
.C_READ_DEPTH_B(16384),
.C_READ_WIDTH_A(8),
.C_READ_WIDTH_B(8),
.C_RST_PRIORITY_A("CE"),
.C_RST_PRIORITY_B("CE"),
.C_RST_TYPE("SYNC"),
.C_RSTRAM_A(0),
.C_RSTRAM_B(0),
.C_SIM_COLLISION_CHECK("ALL"),
.C_USE_BYTE_WEA(0),
.C_USE_BYTE_WEB(0),
.C_USE_DEFAULT_DATA(0),
.C_USE_ECC(0),
.C_USE_SOFTECC(0),
.C_WEA_WIDTH(1),
.C_WEB_WIDTH(1),
.C_WRITE_DEPTH_A(16384),
.C_WRITE_DEPTH_B(16384),
.C_WRITE_MODE_A("WRITE_FIRST"),
.C_WRITE_MODE_B("WRITE_FIRST"),
.C_WRITE_WIDTH_A(8),
.C_WRITE_WIDTH_B(8),
.C_XDEVICEFAMILY("spartan3")
)
inst (
.CLKA(clka),
.WEA(wea),
.ADDRA(addra),
.DINA(dina),
.CLKB(clkb),
.ADDRB(addrb),
.DOUTB(doutb),
.RSTA(),
.ENA(),
.REGCEA(),
.DOUTA(),
.RSTB(),
.ENB(),
.REGCEB(),
.WEB(),
.DINB(),
.INJECTSBITERR(),
.INJECTDBITERR(),
.SBITERR(),
.DBITERR(),
.RDADDRECC(),
.S_ACLK(),
.S_ARESETN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.S_AXI_INJECTSBITERR(),
.S_AXI_INJECTDBITERR(),
.S_AXI_SBITERR(),
.S_AXI_DBITERR(),
.S_AXI_RDADDRECC()
);

// synthesis translate_on

endmodule
105 verilog/sd2snes_cx4/ipcore_dir/msu_databuf.xco
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@@ -0,0 +1,105 @@
##############################################################
#
# Xilinx Core Generator version 13.2
# Date: Mon Oct 10 19:48:38 2011
#
##############################################################
#
# This file contains the customisation parameters for a
# Xilinx CORE Generator IP GUI. It is strongly recommended
# that you do not manually alter this file as it may cause
# unexpected and unsupported behavior.
#
##############################################################
#
# Generated from component: xilinx.com:ip:blk_mem_gen:6.1
#
##############################################################
#
# BEGIN Project Options
SET addpads = false
SET asysymbol = true
SET busformat = BusFormatAngleBracketNotRipped
SET createndf = false
SET designentry = Verilog
SET device = xc3s400
SET devicefamily = spartan3
SET flowvendor = Foundation_ISE
SET formalverification = false
SET foundationsym = false
SET implementationfiletype = Ngc
SET package = pq208
SET removerpms = false
SET simulationfiles = Behavioral
SET speedgrade = -4
SET verilogsim = true
SET vhdlsim = false
# END Project Options
# BEGIN Select
SELECT Block_Memory_Generator xilinx.com:ip:blk_mem_gen:6.1
# END Select
# BEGIN Parameters
CSET additional_inputs_for_power_estimation=false
CSET algorithm=Minimum_Area
CSET assume_synchronous_clk=true
CSET axi_id_width=4
CSET axi_slave_type=Memory_Slave
CSET axi_type=AXI4_Full
CSET byte_size=9
CSET coe_file=no_coe_file_loaded
CSET collision_warnings=ALL
CSET component_name=msu_databuf
CSET disable_collision_warnings=false
CSET disable_out_of_range_warnings=false
CSET ecc=false
CSET ecctype=No_ECC
CSET enable_a=Always_Enabled
CSET enable_b=Always_Enabled
CSET error_injection_type=Single_Bit_Error_Injection
CSET fill_remaining_memory_locations=false
CSET interface_type=Native
CSET load_init_file=false
CSET memory_type=Simple_Dual_Port_RAM
CSET operating_mode_a=WRITE_FIRST
CSET operating_mode_b=WRITE_FIRST
CSET output_reset_value_a=0
CSET output_reset_value_b=0
CSET pipeline_stages=0
CSET port_a_clock=100
CSET port_a_enable_rate=100
CSET port_a_write_rate=50
CSET port_b_clock=100
CSET port_b_enable_rate=100
CSET port_b_write_rate=0
CSET primitive=8kx2
CSET read_width_a=8
CSET read_width_b=8
CSET register_porta_input_of_softecc=false
CSET register_porta_output_of_memory_core=false
CSET register_porta_output_of_memory_primitives=false
CSET register_portb_output_of_memory_core=false
CSET register_portb_output_of_memory_primitives=false
CSET register_portb_output_of_softecc=false
CSET remaining_memory_locations=0
CSET reset_memory_latch_a=false
CSET reset_memory_latch_b=false
CSET reset_priority_a=CE
CSET reset_priority_b=CE
CSET reset_type=SYNC
CSET softecc=false
CSET use_axi_id=false
CSET use_byte_write_enable=false
CSET use_error_injection_pins=false
CSET use_regcea_pin=false
CSET use_regceb_pin=false
CSET use_rsta_pin=false
CSET use_rstb_pin=false
CSET write_depth_a=16384
CSET write_width_a=8
CSET write_width_b=8
# END Parameters
# BEGIN Extra information
MISC pkg_timestamp=2011-06-21T06:43:52.000Z
# END Extra information
GENERATE
# CRC: bebc21bb
79 verilog/sd2snes_cx4/ipcore_dir/msu_databuf.xise
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@@ -0,0 +1,79 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project xmlns="http://www.xilinx.com/XMLSchema" xmlns:xil_pn="http://www.xilinx.com/XMLSchema">

<header>
<!-- ISE source project file created by Project Navigator. -->
<!-- -->
<!-- This file contains project source information including a list of -->
<!-- project source files, project and process properties. This file, -->
<!-- along with the project source files, is sufficient to open and -->
<!-- implement in ISE Project Navigator. -->
<!-- -->
<!-- Copyright (c) 1995-2011 Xilinx, Inc. All rights reserved. -->
</header>

<version xil_pn:ise_version="13.2" xil_pn:schema_version="2"/>

<files>
<file xil_pn:name="msu_databuf.ngc" xil_pn:type="FILE_NGC">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="3"/>
<association xil_pn:name="Implementation" xil_pn:seqID="3"/>
</file>
<file xil_pn:name="msu_databuf.v" xil_pn:type="FILE_VERILOG">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="Implementation" xil_pn:seqID="5"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="5"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="5"/>
</file>
<file xil_pn:name="msu_databuf.vhd" xil_pn:type="FILE_VHDL">
<association xil_pn:name="BehavioralSimulation" xil_pn:seqID="7"/>
<association xil_pn:name="Implementation" xil_pn:seqID="7"/>
<association xil_pn:name="PostMapSimulation" xil_pn:seqID="7"/>
<association xil_pn:name="PostRouteSimulation" xil_pn:seqID="7"/>
<association xil_pn:name="PostTranslateSimulation" xil_pn:seqID="7"/>
</file>
</files>

<properties>
<property xil_pn:name="Auto Implementation Top" xil_pn:value="false" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device" xil_pn:value="xc3s400" xil_pn:valueState="non-default"/>
<property xil_pn:name="Device Family" xil_pn:value="Spartan3" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Stop View" xil_pn:value="PreSynthesis" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top" xil_pn:value="Architecture|msu_databuf|msu_databuf_a" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top File" xil_pn:value="msu_databuf.vhd" xil_pn:valueState="non-default"/>
<property xil_pn:name="Implementation Top Instance Path" xil_pn:value="/msu_databuf" xil_pn:valueState="non-default"/>
<property xil_pn:name="Package" xil_pn:value="pq208" xil_pn:valueState="default"/>
<property xil_pn:name="Preferred Language" xil_pn:value="Verilog" xil_pn:valueState="default"/>
<property xil_pn:name="Project Generator" xil_pn:value="CoreGen" xil_pn:valueState="non-default"/>
<property xil_pn:name="Property Specification in Project File" xil_pn:value="Store all values" xil_pn:valueState="default"/>
<property xil_pn:name="Simulator" xil_pn:value="ISim (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Speed Grade" xil_pn:value="-4" xil_pn:valueState="non-default"/>
<property xil_pn:name="Synthesis Tool" xil_pn:value="XST (VHDL/Verilog)" xil_pn:valueState="default"/>
<property xil_pn:name="Top-Level Source Type" xil_pn:value="HDL" xil_pn:valueState="default"/>
<property xil_pn:name="Working Directory" xil_pn:value="." xil_pn:valueState="non-default"/>
<!-- -->
<!-- The following properties are for internal use only. These should not be modified.-->
<!-- -->
<property xil_pn:name="PROP_DesignName" xil_pn:value="msu_databuf" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_DevFamilyPMName" xil_pn:value="spartan3" xil_pn:valueState="default"/>
<property xil_pn:name="PROP_intProjectCreationTimestamp" xil_pn:value="2011-06-14T00:14:59" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWbtProjectID" xil_pn:value="7648B026E1C3D2C8277D0047EFC3229D" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirLocWRTProjDir" xil_pn:value="Same" xil_pn:valueState="non-default"/>
<property xil_pn:name="PROP_intWorkingDirUsed" xil_pn:value="No" xil_pn:valueState="non-default"/>
</properties>

<bindings/>

<libraries/>

<autoManagedFiles>
<!-- The following files are identified by `include statements in verilog -->
<!-- source files and are automatically managed by Project Navigator. -->
<!-- -->
<!-- Do not hand-edit this section, as it will be overwritten when the -->
<!-- project is analyzed based on files automatically identified as -->
<!-- include files. -->
</autoManagedFiles>

</project>
579 verilog/sd2snes_cx4/main.v
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194 verilog/sd2snes_cx4/msu.v
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@@ -0,0 +1,194 @@
`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 14:55:04 12/14/2010
// Design Name:
// Module Name: msu
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module msu(
input clkin,
input enable,
input [13:0] pgm_address,
input [7:0] pgm_data,
input pgm_we,
input [2:0] reg_addr,
input [7:0] reg_data_in,
output [7:0] reg_data_out,
input reg_oe,
input reg_we,
output [6:0] status_out,
output [7:0] volume_out,
output volume_latch_out,
output [31:0] addr_out,
output [15:0] track_out,
input [5:0] status_reset_bits,
input [5:0] status_set_bits,
input status_reset_we,
input [13:0] msu_address_ext,
input msu_address_ext_write
);

reg [2:0] reg_addr_r [3:0];
always @(posedge clkin) begin
reg_addr_r[3] <= reg_addr_r[2];
reg_addr_r[2] <= reg_addr_r[1];
reg_addr_r[1] <= reg_addr_r[0];
reg_addr_r[0] <= reg_addr;
end


reg [1:0] status_reset_we_r;
always @(posedge clkin) status_reset_we_r = {status_reset_we_r[0], status_reset_we};
wire status_reset_en = (status_reset_we_r == 2'b01);

reg [13:0] msu_address_r;
wire [13:0] msu_address = msu_address_r;

wire [7:0] msu_data;

reg [1:0] msu_address_ext_write_sreg;
always @(posedge clkin)
msu_address_ext_write_sreg <= {msu_address_ext_write_sreg[0], msu_address_ext_write};
wire msu_address_ext_write_rising = (msu_address_ext_write_sreg[1:0] == 2'b01);

reg [4:0] reg_enable_sreg;
initial reg_enable_sreg = 5'b11111;
always @(posedge clkin) reg_enable_sreg <= {reg_enable_sreg[3:0], enable};

reg [5:0] reg_oe_sreg;
always @(posedge clkin) reg_oe_sreg <= {reg_oe_sreg[4:0], reg_oe};
wire reg_oe_rising = reg_enable_sreg[4] && (reg_oe_sreg[5:0] == 6'b000001);

reg [5:0] reg_we_sreg;
always @(posedge clkin) reg_we_sreg <= {reg_we_sreg[4:0], reg_we};
wire reg_we_rising = reg_enable_sreg[4] && (reg_we_sreg[5:0] == 6'b000001);

reg [31:0] addr_out_r;
assign addr_out = addr_out_r;

reg [15:0] track_out_r;
assign track_out = track_out_r;

reg [7:0] volume_r;
assign volume_out = volume_r;

reg volume_start_r;
assign volume_latch_out = volume_start_r;

reg audio_start_r;
reg audio_busy_r;
reg data_start_r;
reg data_busy_r;
reg ctrl_start_r;
reg [1:0] audio_ctrl_r;
reg [1:0] audio_status_r;

initial begin
audio_busy_r <= 1'b1;
data_busy_r <= 1'b1;
end

assign status_out = {msu_address_r[13], // 6
audio_start_r, // 5
data_start_r, // 4
volume_start_r, // 3
audio_ctrl_r, // 2:1
ctrl_start_r}; // 0

initial msu_address_r = 14'h1234;

msu_databuf snes_msu_databuf (
.clka(clkin),
.wea(~pgm_we), // Bus [0 : 0]
.addra(pgm_address), // Bus [13 : 0]
.dina(pgm_data), // Bus [7 : 0]
.clkb(clkin),
.addrb(msu_address), // Bus [13 : 0]
.doutb(msu_data)
); // Bus [7 : 0]

reg [7:0] data_out_r;
assign reg_data_out = data_out_r;

always @(posedge clkin) begin
case(reg_addr_r[3])
3'h0: data_out_r <= {data_busy_r, audio_busy_r, audio_status_r, 4'b0001};
3'h1: data_out_r <= msu_data;
3'h2: data_out_r <= 8'h53;
3'h3: data_out_r <= 8'h2d;
3'h4: data_out_r <= 8'h4d;
3'h5: data_out_r <= 8'h53;
3'h6: data_out_r <= 8'h55;
3'h7: data_out_r <= 8'h31;
endcase
end

always @(posedge clkin) begin
if(reg_we_rising) begin
case(reg_addr_r[3])
3'h0: addr_out_r[7:0] <= reg_data_in;
3'h1: addr_out_r[15:8] <= reg_data_in;
3'h2: addr_out_r[23:16] <= reg_data_in;
3'h3: begin
addr_out_r[31:24] <= reg_data_in;
data_start_r <= 1'b1;
data_busy_r <= 1'b1;
end
3'h4: begin
track_out_r[7:0] <= reg_data_in;
end
3'h5: begin
track_out_r[15:8] <= reg_data_in;
audio_start_r <= 1'b1;
audio_busy_r <= 1'b1;
end
3'h6: begin
volume_r <= reg_data_in;
volume_start_r <= 1'b1;
end
3'h7: begin
if(!audio_busy_r) begin
audio_ctrl_r <= reg_data_in[1:0];
ctrl_start_r <= 1'b1;
end
end
endcase
end else if (status_reset_en) begin
audio_busy_r <= (audio_busy_r | status_set_bits[5]) & ~status_reset_bits[5];
if(status_reset_bits[5]) audio_start_r <= 1'b0;

data_busy_r <= (data_busy_r | status_set_bits[4]) & ~status_reset_bits[4];
if(status_reset_bits[4]) data_start_r <= 1'b0;

// volume_start_r <= (volume_start_r | status_set_bits[3]) & ~status_reset_bits[3];

audio_status_r <= (audio_status_r | status_set_bits[2:1]) & ~status_reset_bits[2:1];

ctrl_start_r <= (ctrl_start_r | status_set_bits[0]) & ~status_reset_bits[0];
end else begin
volume_start_r <= 1'b0;
end
end

always @(posedge clkin) begin
if(msu_address_ext_write_rising)
msu_address_r <= msu_address_ext;
else if(reg_addr_r[3] == 3'h1 && reg_oe_rising) begin
msu_address_r <= msu_address_r + 1;
end
end

endmodule
456 verilog/sd2snes_cx4/sd2snes_cx4.xise
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132 verilog/sd2snes_cx4/sd_dma.v
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@@ -0,0 +1,132 @@
`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 19:19:08 12/01/2010
// Design Name:
// Module Name: sd_dma
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////
module sd_dma(
input [3:0] SD_DAT,
inout SD_CLK,
input CLK,
input SD_DMA_EN,
output SD_DMA_STATUS,
output SD_DMA_SRAM_WE,
output SD_DMA_NEXTADDR,
output [7:0] SD_DMA_SRAM_DATA,
input SD_DMA_PARTIAL,
input [10:0] SD_DMA_PARTIAL_START,
input [10:0] SD_DMA_PARTIAL_END
);

reg [10:0] SD_DMA_STARTr;
reg [10:0] SD_DMA_ENDr;
reg SD_DMA_PARTIALr;
always @(posedge CLK) SD_DMA_PARTIALr <= SD_DMA_PARTIAL;

reg SD_DMA_DONEr;
reg[1:0] SD_DMA_DONEr2;
initial begin
SD_DMA_DONEr2 = 2'b00;
SD_DMA_DONEr = 1'b0;
end
always @(posedge CLK) SD_DMA_DONEr2 <= {SD_DMA_DONEr2[0], SD_DMA_DONEr};
wire SD_DMA_DONE_rising = (SD_DMA_DONEr2[1:0] == 2'b01);

reg [1:0] SD_DMA_ENr;
initial SD_DMA_ENr = 2'b00;
always @(posedge CLK) SD_DMA_ENr <= {SD_DMA_ENr[0], SD_DMA_EN};
wire SD_DMA_EN_rising = (SD_DMA_ENr [1:0] == 2'b01);

reg SD_DMA_STATUSr;
assign SD_DMA_STATUS = SD_DMA_STATUSr;

// we need 1042 cycles (startbit + 1024 nibbles + 16 crc + stopbit)
reg [10:0] cyclecnt;
initial cyclecnt = 11'd0;

reg SD_DMA_SRAM_WEr;
initial SD_DMA_SRAM_WEr = 1'b1;
assign SD_DMA_SRAM_WE = (cyclecnt < 1025 && SD_DMA_STATUSr) ? SD_DMA_SRAM_WEr : 1'b1;

reg SD_DMA_NEXTADDRr;
assign SD_DMA_NEXTADDR = (cyclecnt < 1025 && SD_DMA_STATUSr) ? SD_DMA_NEXTADDRr : 1'b0;

reg[7:0] SD_DMA_SRAM_DATAr;
assign SD_DMA_SRAM_DATA = SD_DMA_SRAM_DATAr;

// we have 4 internal cycles per SD clock, 8 per RAM byte write
reg [2:0] clkcnt;
initial clkcnt = 3'b000;
reg SD_CLKr;
always @(posedge CLK) SD_CLKr <= clkcnt[1];
assign SD_CLK = SD_DMA_STATUSr ? SD_CLKr : 1'bZ;

always @(posedge CLK) begin
if(SD_DMA_EN_rising) begin
SD_DMA_STATUSr <= 1'b1;
SD_DMA_STARTr <= (SD_DMA_PARTIALr ? SD_DMA_PARTIAL_START : 11'h0);
SD_DMA_ENDr <= (SD_DMA_PARTIALr ? SD_DMA_PARTIAL_END : 11'd1024);
end
else if (SD_DMA_DONE_rising) SD_DMA_STATUSr <= 1'b0;
end

always @(posedge CLK) begin
if(cyclecnt == 1042) SD_DMA_DONEr <= 1;
else SD_DMA_DONEr <= 0;
end

always @(posedge CLK) begin
if(SD_DMA_EN_rising || !SD_DMA_STATUSr) begin
clkcnt <= 0;
end else begin
if(SD_DMA_STATUSr) begin
clkcnt <= clkcnt + 1;
end
end
end

always @(posedge CLK) begin
if(SD_DMA_EN_rising || !SD_DMA_STATUSr) cyclecnt <= 0;
else if(clkcnt[1:0] == 2'b11) cyclecnt <= cyclecnt + 1;
end

// we have 8 clk cycles to complete one RAM write
// (4 clk cycles per SD_CLK; 2 SD_CLK cycles per byte)
always @(posedge CLK) begin
if(SD_DMA_STATUSr) begin
case(clkcnt[2:0])
3'h0: begin
SD_DMA_SRAM_WEr <= 1'b1;
SD_DMA_SRAM_DATAr[7:4] <= SD_DAT;
if(cyclecnt>SD_DMA_STARTr && cyclecnt <= SD_DMA_ENDr) SD_DMA_NEXTADDRr <= 1'b1;
end
3'h1:
SD_DMA_NEXTADDRr <= 1'b0;
// 3'h2:
3'h3:
if(cyclecnt>=SD_DMA_STARTr && cyclecnt < SD_DMA_ENDr) SD_DMA_SRAM_WEr <= 1'b0;
3'h4:
SD_DMA_SRAM_DATAr[3:0] <= SD_DAT;
// 3'h5:
// 3'h6:
// 3'h7:
endcase
end
end

endmodule

113 verilog/sd2snes_cx4/spi.v
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@@ -0,0 +1,113 @@
`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 21:16:09 07/10/2009
// Design Name:
// Module Name: spi
// Project Name:
// Target Devices:
// Tool versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//

//////////////////////////////////////////////////////////////////////////////////
module spi(
input clk,
input SCK,
input MOSI,
inout MISO,
input SSEL,
output cmd_ready,
output param_ready,
output [7:0] cmd_data,
output [7:0] param_data,
output endmessage,
output startmessage,
input [7:0] input_data,
output [31:0] byte_cnt,
output [2:0] bit_cnt
);

reg [7:0] cmd_data_r;
reg [7:0] param_data_r;

reg [1:0] SSELr; always @(posedge clk) SSELr <= {SSELr[0], SSEL};
wire SSEL_active = ~SSELr[1]; // SSEL is active low
wire SSEL_startmessage = (SSELr[1:0]==2'b10); // message starts at falling edge
wire SSEL_endmessage = (SSELr[1:0]==2'b01); // message stops at rising edge
assign endmessage = SSEL_endmessage;
assign startmessage = SSEL_startmessage;

// bit count for one SPI byte + byte count for the message
reg [2:0] bitcnt;
reg [31:0] byte_cnt_r;

reg byte_received; // high when a byte has been received
reg [7:0] byte_data_received;

assign bit_cnt = bitcnt;

always @(posedge SCK) begin
if(SSEL) bitcnt <= 3'b000;
else begin
bitcnt <= bitcnt + 3'b001;
byte_data_received <= {byte_data_received[6:0], MOSI};
end
if(~SSEL && bitcnt==3'b111) byte_received <= 1'b1;
else byte_received <= 1'b0;
end

reg [1:0] byte_received_r;
always @(posedge clk) byte_received_r <= {byte_received_r[0], byte_received};
wire byte_received_sync = (byte_received_r == 2'b01);

always @(posedge clk) begin
if(~SSEL_active)
byte_cnt_r <= 16'h0000;
else if(byte_received_sync) begin
byte_cnt_r <= byte_cnt_r + 16'h0001;
end
end

reg [7:0] byte_data_sent;

assign MISO = ~SSEL ? input_data[7-bitcnt] : 1'bZ; // send MSB first

reg cmd_ready_r;
reg param_ready_r;
reg cmd_ready_r2;
reg param_ready_r2;
assign cmd_ready = cmd_ready_r;
assign param_ready = param_ready_r;
assign cmd_data = cmd_data_r;
assign param_data = param_data_r;
assign byte_cnt = byte_cnt_r;

always @(posedge clk) cmd_ready_r2 = byte_received_sync && byte_cnt_r == 32'h0;
always @(posedge clk) param_ready_r2 = byte_received_sync && byte_cnt_r > 32'h0;

// fill registers
always @(posedge clk) begin
if (SSEL_startmessage)
cmd_data_r <= 8'h00;
else if(cmd_ready_r2)
cmd_data_r <= byte_data_received;
else if(param_ready_r2)
param_data_r <= byte_data_received;
end

// delay ready signals by one clock
always @(posedge clk) begin
cmd_ready_r <= cmd_ready_r2;
param_ready_r <= param_ready_r2;
end

endmodule