add cbm example

samples_cbm/Makefile.vars

@@ -0,0 +1,7 @@
+# Common emulator flags and locations
+# Ensure the emulator and rom locations are for your system
+
+ALOEVERA = "../../target/debug/aloevera"
+C128_EMU = x128
+C128_EMU_FLAGS =  
+#DEBUG = -debug 9000

samples_cbm/common/Makefile

@@ -0,0 +1,36 @@
+# Common makefile include for examples
+# Don't run make from this directory, run
+# from subdirs
+
+C128_RUN = $(C128_EMU) $(C128_EMU_FLAGS) $(DEBUG)
+
+# Ensure ld65 and ca65 are on your path
+# Assembly flags
+CPU = 6502
+AS = ca65
+# Add defines, if needed (-DWHATEVER)
+ASFLAGS = -g --cpu $(CPU)
+
+# Linker flags
+LD = ld65
+#Define segments and files in config.cfg
+LDFLAGS = -C ../common/c128-asm.cfg
+
+OBJS_$(NAME): $(NAME).o
+	$(LD) $(LDFLAGS) -o $(NAME).prg -m $(NAME).map $(NAME).o 
+
+$(NAME).o: project.av $(NAME).s
+	$(AS) $(ASFLAGS) $(NAME).s
+
+run_fresh:
+	$(C128_RUN)
+
+run_asm: OBJS_$(NAME)
+	$(C128_RUN) -autostart $(NAME).prg 
+
+run_bas: $(NAME).assembled.bas
+	$(C128_RUN) -bas $(NAME).assembled.bas
+
+all: OBJS_$(NAME)
+clean:
+	rm -rf ./output *.o *.prg *.map *.av *.log *.assembled.bas *.img *.BIN *.meta

samples_cbm/common/c128-asm.cfg

@@ -0,0 +1,17 @@
+FEATURES {
+    STARTADDRESS: default = $1C00;
+}
+MEMORY {
+    ZP:       file = "", start = $0002,  size = $00FE,      define = yes;
+    LOADADDR: file = %O, start = %S - 2, size = $0002;
+    MAIN:     file = %O, start = %S,     size = $D000 - %S;
+}
+SEGMENTS {
+    ZEROPAGE: load = ZP,       type = zp,  optional = yes;
+    LOADADDR: load = LOADADDR, type = ro;
+    EXEHDR:   load = MAIN,     type = ro,  optional = yes;
+    CODE:     load = MAIN,     type = rw;
+    RODATA:   load = MAIN,     type = ro,  optional = yes;
+    DATA:     load = MAIN,     type = rw,  optional = yes;
+    BSS:      load = MAIN,     type = bss, optional = yes, define = yes;
+}

samples_cbm/common/header.inc

@@ -0,0 +1,9 @@
+;Basic Header
+.segment "LOADADDR"
+	.word $1C01
+
+.segment "EXEHDR"
+.word next, 10
+.byte $9e, "7188", 0, 0
+.word 0, 0, 0
+next: .word 0

samples_cbm/common/macros.inc

@@ -0,0 +1,45 @@
+; adds a constant to 16 bit value
+; stored at addr
+.macro add_constant_16 addr, constant
+	clc
+	lda addr
+	adc #<constant
+	sta addr
+	lda addr + 1
+	adc #>constant
+	sta addr + 1
+.endmacro
+
+; loop until value stored in addr equals constant
+.macro loop_till_eq_16 addr, constant, loop_label
+	lda addr+1
+	cmp #>constant ;loop until 512 reached
+	bne loop_label
+	lda addr
+	cmp #<constant
+	bne loop_label
+.endmacro
+
+; set a 16 bit constant in addr
+.macro set_const_16 addr, constant
+	lda #<constant
+	sta addr
+	lda #>constant
+	sta addr+1
+.endmacro
+
+VERA_ADDR_LO = $9F20
+VERA_ADDR_MID = VERA_ADDR_LO + 1;
+VERA_ADDR_HI = VERA_ADDR_LO + 2;
+VERA_DATA0 = VERA_ADDR_LO + 3;
+VERA_DATA1 = VERA_ADDR_LO + 4;
+
+.macro v_address_set addr, stride
+	lda #<(addr >> 16) | stride << 4
+	sta VERA_ADDR_HI
+	lda #<(addr >> 8)
+	sta VERA_ADDR_MID
+	lda #<(addr)
+	sta VERA_ADDR_LO
+.endmacro
+

samples_cbm/petscii_tile/Makefile

@@ -0,0 +1,19 @@
+include ../Makefile.vars
+NAME = p128
+
+project.av: p128-ref-template.png
+	$(ALOEVERA) create project project.av
+	$(ALOEVERA) -p project.av palette import cbm_palette p128-ref-template.png
+#	$(ALOEVERA) -p project.gx16 imageset import text_set_1 8 8 pixel-font.png
+#	$(ALOEVERA) -p project.gx16 imageset format text_set_1 palette_1 1
+#	$(ALOEVERA) -p project.gx16 asm ./output/ all
+	$(ALOEVERA) -p project.av asm -f ca65 ./output/ all
+
+generate_resources: project.av
+
+generate_basic: generate_resources
+	cat $(NAME).bas > $(NAME).assembled.bas
+
+$(NAME).assembled.bas: generate_basic
+
+include ../common/Makefile

samples_cbm/petscii_tile/p128.s

@@ -0,0 +1,11 @@
+.include "../common/header.inc"
+
+.code
+lda #$00
+sta $d020
+sta $d021
+rts
+
+.segment "RODATA"
+imageset:
+	.include "output/palettes/cbm_palette.ca65.inc"