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29 lines
1.3 KiB
Plaintext
29 lines
1.3 KiB
Plaintext
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* there is a problem with the ANDtoSR instruction, such that interrupts don't occur and the system locks up before the shell starts, but I'm not sure
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why it worked before and doesn't work now
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* add exception for privileged instructions. Should you separate them in the `match` or just put a guard into the instructions, and if the latter, can
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you use the emulator's errors to surface the execption up to the `step_internal` function but not to `System`?
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* make functions to print assembly out
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* how can you add 68030 support? Should it be all one module that checks maybe during decode if the instruction is supported? Should it 'inherit' from the MC68010 object
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* make tests for each instruction
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* unimplemented: ABCD, ADDX, BKPT, CHK, EXG, ILLEGAL, MOVEfromCCR, MOVEP, RTR, RTD, SBCD, SUBX
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* undecoded: ADDX, SUBX
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* modify execution for >=MC68020: DIVSL, DIVUL, EXTB, LINK, MOVEM, MULSL, MULUL, RTM, TRAPcc, UNPK
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* implement the full extension word for MC68020+
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* >=MC68020 instructions: BFCHG, BFCLR, BFEXTS, BFEXTU, BFFFO, BFINS, BFSET, BFTST, CALLM, CAS, CAS2, CHK2, CMP2, PACK
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* Coprocessor instructions: cpBcc, cpDBcc, cpGEN, cpScc, cpTRAPcc
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* should you simulate clock ticks, and only step devices when they next request it
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* how can you have multple CPUs
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* should you simulate bus arbitration?
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* check all instructions in the docs
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