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Doh, have to MMR1 record JSR stackpush

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Neil Webber 2023-09-05 22:58:15 -05:00
parent b9b60faea5
commit 797ccc3273
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op00.py
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@ -53,6 +53,7 @@ def op00_4_jsr(cpu, inst):
# NOTE: no condition code modifications # NOTE: no condition code modifications
# cpu.logger.debug(f"JSR to {oct(tmp)} from {oct(cpu.r[cpu.PC])}") # cpu.logger.debug(f"JSR to {oct(tmp)} from {oct(cpu.r[cpu.PC])}")
cpu.mmu.MMR1mod(0o366) # the encoding for -2 on sp
cpu.stackpush(cpu.r[Rn]) cpu.stackpush(cpu.r[Rn])
cpu.r[Rn] = cpu.r[cpu.PC] # this could be a no-op if Rn == 7 cpu.r[Rn] = cpu.r[cpu.PC] # this could be a no-op if Rn == 7
cpu.r[cpu.PC] = tmp cpu.r[cpu.PC] = tmp