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W65C265SXB.cxx
441 lines (374 loc) · 10.4 KB
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W65C265SXB.cxx
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/**
* Java Grinder
* Author: Michael Kohn
* Email: mike@mikekohn.net
* Web: http://www.mikekohn.net/
* License: GPLv3
*
* Copyright 2014-2018 by Michael Kohn
*
* W65C265SXB by Joe Davisson
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "generator/W65C265SXB.h"
W65C265SXB::W65C265SXB()
{
start_org = 0x1000;
ram_start = 0x7000;
need_put_string = 0;
need_put_int = 0;
}
W65C265SXB::~W65C265SXB()
{
if(need_put_string) { insert_put_string(); }
if(need_put_int) { insert_put_int(); }
}
int W65C265SXB::open(const char *filename)
{
if(W65816::open(filename) != 0) { return -1; }
fprintf(out, ".65816\n");
fprintf(out, "put_int_result equ 0xe0\n");
fprintf(out, "put_int_table equ 0xf0\n");
fprintf(out, "lda #10000\n");
fprintf(out, "sta put_int_table + 0\n");
fprintf(out, "lda #1000\n");
fprintf(out, "sta put_int_table + 2\n");
fprintf(out, "lda #100\n");
fprintf(out, "sta put_int_table + 4\n");
fprintf(out, "lda #10\n");
fprintf(out, "sta put_int_table + 6\n");
fprintf(out, "lda #1\n");
fprintf(out, "sta put_int_table + 8\n");
return 0;
}
// terminal interface API
int W65C265SXB::sxb_getChar()
{
fprintf(out, "; getChar\n");
fprintf(out, " lda #0\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe036\n");
fprintf(out, " rep #0x30\n");
fprintf(out, " pha\n");
label_count++;
return 0;
}
int W65C265SXB::sxb_putChar_C()
{
fprintf(out, "; putChar\n");
fprintf(out, " pla\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe04b\n");
fprintf(out, " rep #0x30\n");
label_count++;
return 0;
}
int W65C265SXB::sxb_getInt()
{
fprintf(out, "; getInt\n");
return -1;
}
int W65C265SXB::sxb_putInt_I()
{
need_put_int = 1;
fprintf(out, "; putInt\n");
fprintf(out, " jsr put_int\n");
return 0;
}
int W65C265SXB::sxb_getString()
{
fprintf(out, "; getString\n");
return -1;
}
int W65C265SXB::sxb_putString_X()
{
need_put_string = 1;
fprintf(out, " jsr put_string\n");
return 0;
}
void W65C265SXB::insert_put_string()
{
fprintf(out, "put_string:\n");
save_return();
fprintf(out, " pla\n");
fprintf(out, " sta address\n");
fprintf(out, " dec address\n");
fprintf(out, " dec address\n");
fprintf(out, " lda (address)\n");
fprintf(out, " tay\n");
fprintf(out, " inc address\n");
fprintf(out, " inc address\n");
fprintf(out, "put_string_loop:\n");
fprintf(out, " lda (address)\n");
fprintf(out, " beq put_string_end\n");
fprintf(out, " cmp #'\\n'\n");
fprintf(out, " bne put_string_skip\n");
fprintf(out, " lda #13\n");
fprintf(out, "put_string_skip:\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe04b\n");
fprintf(out, " rep #0x30\n");
fprintf(out, " inc address\n");
fprintf(out, " dey\n");
fprintf(out, " bne put_string_loop\n");
fprintf(out, "put_string_end:\n");
restore_return();
fprintf(out, " rts\n");
}
void W65C265SXB::insert_put_int()
{
fprintf(out, "put_int:\n");
save_return();
fprintf(out, " stz value1\n");
fprintf(out, " stz value2\n");
fprintf(out, " lda #'0'\n");
fprintf(out, " sta put_int_result + 0\n");
fprintf(out, " sta put_int_result + 2\n");
fprintf(out, " sta put_int_result + 4\n");
fprintf(out, " sta put_int_result + 6\n");
fprintf(out, " sta put_int_result + 8\n");
fprintf(out, " pla\n");
fprintf(out, " bne put_int_check_sign\n");
fprintf(out, " lda #'0'\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe04b\n");
fprintf(out, " rep #0x30\n");
restore_return();
fprintf(out, " rts\n");
fprintf(out, "put_int_check_sign:\n");
fprintf(out, " bpl put_int_start\n");
fprintf(out, " eor #0xffff\n");
fprintf(out, " inc\n");
fprintf(out, " ldx #1\n");
fprintf(out, " stx value1\n");
fprintf(out, "put_int_start:\n");
fprintf(out, " ldx #0\n");
fprintf(out, " sec\n");
fprintf(out, "put_int_loop:\n");
fprintf(out, " cmp put_int_table,x\n");
fprintf(out, " bmi put_int_loop2\n");
fprintf(out, "put_int_loop2:\n");
fprintf(out, " cmp put_int_table,x\n");
fprintf(out, " bmi put_int_continue\n");
fprintf(out, " sbc put_int_table,x\n");
fprintf(out, " inc put_int_result,x\n");
fprintf(out, " bra put_int_loop2\n");
fprintf(out, "put_int_continue:\n");
fprintf(out, " inx\n");
fprintf(out, " inx\n");
fprintf(out, " cpx #10\n");
fprintf(out, " bne put_int_loop\n");
fprintf(out, " lda value1\n");
fprintf(out, " beq put_int_skip_minus\n");
fprintf(out, " lda #'-'\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe04b\n");
fprintf(out, " rep #0x30\n");
fprintf(out, "put_int_skip_minus:\n");
fprintf(out, " ldx #0\n");
fprintf(out, "put_int_skip_zeros:\n");
fprintf(out, " lda put_int_result,x\n");
fprintf(out, " cmp #'0'\n");
fprintf(out, " bne put_int_print_loop\n");
fprintf(out, " inx\n");
fprintf(out, " inx\n");
fprintf(out, " bra put_int_skip_zeros\n");
fprintf(out, "put_int_print_loop:\n");
fprintf(out, " lda put_int_result,x\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " jsr.l 0xe04b\n");
fprintf(out, " rep #0x30\n");
fprintf(out, " inx\n");
fprintf(out, " inx\n");
fprintf(out, " cpx #10\n");
fprintf(out, " bne put_int_print_loop\n");
restore_return();
fprintf(out, " rts\n");
}
// 0xdf24 - port 4 direction
// 0xdf25 - port 5 direction
// 0xdf26 - port 6 direction
// 0xdf20 - port 4 data
// 0xdf21 - port 5 data
// 0xdf22 - port 6 data
// GPIO
int W65C265SXB::ioport_setPinsAsInput_I(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsAsInput\n");
fprintf(out, " pla\n");
fprintf(out, " eor #0xffff\n");
fprintf(out, " and 0xdf24 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf24 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsAsInput_I(int port, int const_val)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsAsInput (optimized)\n");
fprintf(out, " lda #%d\n", const_val);
fprintf(out, " eor #0xffff\n");
fprintf(out, " and 0xdf24 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf24 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsAsOutput_I(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsAsOutput\n");
fprintf(out, " pla\n");
fprintf(out, " ora 0xdf24 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf24 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsAsOutput_I(int port, int const_val)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsAsOutput (optimized)\n");
fprintf(out, " lda #%d\n", const_val);
fprintf(out, " ora 0xdf24 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf24 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsValue_I(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsValue\n");
fprintf(out, " pla\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsValue_I(int port, int const_val)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsValue (optimized)\n");
fprintf(out, " lda #%d\n", const_val);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsHigh_I(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsHigh\n");
fprintf(out, " pla\n");
fprintf(out, " ora 0xdf20 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinsLow_I(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_setPinsLow\n");
fprintf(out, " pla\n");
fprintf(out, " eor #0xffff\n");
fprintf(out, " and 0xdf20 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinAsOutput_I(int port)
{
return -1;
}
int W65C265SXB::ioport_setPinAsInput_I(int port)
{
return -1;
}
int W65C265SXB::ioport_setPinHigh_I(int port)
{
return -1;
}
int W65C265SXB::ioport_setPinHigh_I(int port, int const_val)
{
if(port < 4 || port > 6)
return -1;
if(const_val < 0 || const_val > 7) { return -1; }
fprintf(out, "; ioport_setPinHigh (optimized)\n");
fprintf(out, " lda #%d\n", (1 << const_val));
fprintf(out, " ora 0xdf20 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_setPinLow_I(int port)
{
return -1;
}
int W65C265SXB::ioport_setPinLow_I(int port, int const_val)
{
if(port < 4 || port > 6)
return -1;
if(const_val < 0 || const_val > 7) { return -1; }
fprintf(out, "; ioport_setPinLow (optimized)\n");
fprintf(out, " lda #%d\n", (1 << const_val));
fprintf(out, " eor #0xffff\n");
fprintf(out, " and 0xdf20 + %d\n", port - 4);
fprintf(out, " sep #0x20\n");
fprintf(out, " sta 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
return 0;
}
int W65C265SXB::ioport_isPinInputHigh_I(int port)
{
return -1;
}
int W65C265SXB::ioport_getPortInputValue(int port)
{
if(port < 4 || port > 6)
return -1;
fprintf(out, "; ioport_getPortInputValue\n");
fprintf(out, " lda #0\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " lda 0xdf20 + %d\n", port - 4);
fprintf(out, " rep #0x30\n");
fprintf(out, " pha\n");
return 0;
}
// tone generator API
int W65C265SXB::sxb_controlTones_IIZZ()
{
// int control = (enable2 & 1) | ((enable2 & 1) << 1);
fprintf(out, "; controlTones\n");
fprintf(out, " pla\n");
fprintf(out, " asl\n");
fprintf(out, " sta value1\n");
fprintf(out, " pla\n");
fprintf(out, " ora value1\n");
fprintf(out, " sta value1\n");
fprintf(out, " pla\n");
fprintf(out, " tay\n");
fprintf(out, " pla\n");
fprintf(out, " tax\n");
fprintf(out, " sep #0x20\n");
fprintf(out, " lda.b value1\n");
fprintf(out, " jsr.l 0xe009\n");
fprintf(out, " rep #0x30\n");
return 0;
}