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Add ROM image generation

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Gregor Riepl 2022-09-04 10:02:06 +02:00
parent 3a59b292a4
commit 2ccb2f9a5d
2 changed files with 32 additions and 11 deletions
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21
Makefile
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@ -1,19 +1,18 @@
MACHINE := pet
MEMCFG := mem.cfg
.PHONY: all clean .PHONY: all clean
all: rs232.prg test.prg all: driver.prg driver.rom test.prg driver2.prg driver2.rom
clean: clean:
rm -f *.o *.lst *.map *.prg rm -f *.o *.lst *.map *.prg *.rom
rs232.prg: driver.o %.prg: %.bas
cl65 -v -C ${MEMCFG} -m rs232.map -o $@ $^
test.prg: test.bas
petcat -w40 -o $@ -- $^ petcat -w40 -o $@ -- $^
%.prg: %.o
cl65 -v -C mem.cfg -m $@.map -o $@ $^
%.rom: %.o
cl65 -v -C rom.cfg -m $@.map -o $@ $^
%.o: %.a65 %.o: %.a65
ca65 -v -l $(patsubst %.o,%.lst,$@) -t ${MACHINE} -o $@ $< ca65 -v -l $(patsubst %.o,%.lst,$@) -t pet -o $@ $<

22
rom.cfg Normal file
View file

@ -0,0 +1,22 @@
MEMORY {
# $ED-$F7 seems to be an unused area in the zero page according to the BASIC 2.0/4.0 memory map
ZP: file = "", define = yes, start = $00ED, size = $000A;
# the load address is not used if we generate a raw ROM image
LOADADDR: file = "", start = $6FFE, size = $0002;
# we're loading at $7000, max code size $800 bytes
RAM: file = "", start = $7000, size = $0800;
# if we reside in ROM instead, we should have more space available
ROM: file = %O, start = $9000, size = $2000;
# usable memory from the "tape #1 input buffer"
SCRATCH: file = "", start = $027A, size = 191;
}
SEGMENTS {
ZEROPAGE: load = ZP, type = zp;
LOADADDR: load = LOADADDR, type = ro;
# change these two to "ROM" if you want to put them on a ROM chip
CODE: load = ROM, type = ro;
RODATA: load = ROM, type = ro;
# data and bss should come after the code if they all reside in RAM
DATA: load = RAM, type = rw;
BSS: load = SCRATCH, type = bss, define = yes;
}