add a Sun3_60NoParity preliminary patch (untested)

RomPatcher/Sun3_60NoParity/Makefile

@@ -0,0 +1,41 @@
+RETRO68=/home/dolbeau/Retro68/build/toolchain
+AS=${RETRO68}/bin/m68k-apple-macos-as
+CC=${RETRO68}/bin/m68k-apple-macos-gcc
+LD=${RETRO68}/bin/m68k-apple-macos-ld
+STRIP=${RETRO68}/bin/m68k-apple-macos-strip
+OBJCOPY=${RETRO68}/bin/m68k-apple-macos-objcopy
+NM=${RETRO68}/bin/m68k-apple-macos-nm
+
+HOSTCC=gcc
+HOSTCFLAGS=-O2
+
+ARCHFLAGS=-march=68020 -mcpu=68020
+CFLAGS=-O2 -mpcrel
+
+GENLINK=../patcher/genlink
+PATCHER=../patcher/patcher
+
+all: sun3_60_v1.9.bin
+
+show: rompatch.elf
+	$(NM) $< | sort
+
+sun3_60_v1.9.bin: ../ rompatch.raw input.txt
+	/bin/cp ../sun3_60_v1.9 sun3_60_v1.9.bin
+	${PATCHER} -i rompatch.raw -p sun3_60_v1.9.bin -d input.txt
+
+linker.ld: input.txt rompatch.s
+	${GENLINK} -d $< >| $@
+	echo $(shell for X in `grep .section rompatch.s | awk '{ print $$2 }' `; do grep -q $$X linker.ld || echo " $$X has no entry in linker.ld" && /bin/false; done)
+
+rompatch.o: rompatch.s
+	${AS} ${ARCHFLAGS} $< -o $@ -a > rompatch.l
+
+rompatch.elf: linker.ld rompatch.o ${CSRC:.c=.o} # linker script must be first
+	${LD} -o $@ -T $^
+
+rompatch.raw: rompatch.elf
+	${OBJCOPY} $^ $@ --input-target=elf32-m68k --output-target=binary
+
+clean:
+	rm -f res.inc ${CSRC_ASM} *.o rompatch.srec rompatch.raw rompatch.dir rompatch.l linker.ld rompatch.elf

RomPatcher/Sun3_60NoParity/input.txt

@@ -0,0 +1,7 @@
+0x003a4, 6, fixIrq7Handler
+0x0188c, 8, fixMonReset
+0x026da, 10, bypassTest0Eand0Fpatch
+0x028f2, 0, test_10_memory_test
+0x02920, 8, patch_test_10_memory_test_1
+0x0299c, 36, patch_test_10_memory_test_2
+0x04070, 6, fixMonitor_Key_K

RomPatcher/Sun3_60NoParity/rompatch.s

@@ -0,0 +1,69 @@
+	.section .text.fixIrq7Handler
+	/* don't read the Memory Error Register in the Lvl 7 Interrupt Handler */
+	/* this is the most likely to reapper in an operating system... */
+fixIrq7Handler:
+	move.b  #0,%d0
+	nop
+	
+
+	.section .text.fixMonReset
+	/* don't bother initializing the parity */
+fixMonReset:
+	nop
+	nop
+	nop
+	nop
+
+	.section .text.bypassTest0Eand0Fpatch
+	/* bypass test_0E (parity memory error test)
+	      and test_0F (forced parity error test)
+	*/
+bypassTest0Eand0Fpatch:
+	jmp (%pc,test_10_memory_test)
+	nop
+	
+	.section .text.test_10_memory_test
+test_10_memory_test:	
+
+	.section .text.patch_test_10_memory_test_1
+	/* don't bother setting the register */
+patch_test_10_memory_test_1:
+	nop
+	nop
+	nop
+	nop
+
+	.section .text.patch_test_10_memory_test_2
+	/* wipe out the code testing the registers and resetting them */
+patch_test_10_memory_test_2:
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	nop
+	nop
+	nop
+	nop
+	nop
+	
+	nop
+	nop
+	nop
+	nop
+	nop
+
+	nop
+	nop
+	nop
+	
+	/* there is a read of the register in the case MEMERR in commands.c::monitor(), but that shouldn't happen without the hardware as no irq will be raised ? */
+
+	.section .text.fixMonitor_Key_K
+	/* when resetting with 'k', the parity control is cleared */
+fixMonitor_Key_K:
+	nop
+	nop
+	nop
+