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Decode MOVE and the fixed 0x4xxx set.

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This commit is contained in:
Thomas Harte 2022-04-15 15:40:31 -04:00
parent 89b8b59658
commit faa35fe9fc
1 changed files with 16 additions and 3 deletions
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19
InstructionSets/68k/Decoder.cpp
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@ -229,9 +229,19 @@ template <uint8_t op, bool validate> Preinstruction Predecoder<model>::decode(ui
AddressingMode::AddressRegisterIndirectWithDisplacement, ea_register);
//
// MARK: STOP
// MARK: MOVE
//
case Op(Operation::STOP):
case Op(Operation::MOVEb): case Op(Operation::MOVEl): case Op(Operation::MOVEw):
return Preinstruction(operation,
ea_combined_mode, ea_register,
combined_mode<false, false>(opmode, data_register), data_register);
//
// MARK: STOP, RESET, NOP RTE, RTS, TRAPV, RTR
//
case Op(Operation::STOP): case Op(Operation::RESET): case Op(Operation::NOP):
case Op(Operation::RTE): case Op(Operation::RTS): case Op(Operation::TRAPV):
case Op(Operation::RTR):
return Preinstruction(operation);
//
@ -336,17 +346,20 @@ Preinstruction Predecoder<model>::decode0(uint16_t instruction) {
template <Model model>
Preinstruction Predecoder<model>::decode1(uint16_t instruction) {
// 4-116 (p220)
DecodeOp(MOVEb);
}
template <Model model>
Preinstruction Predecoder<model>::decode2(uint16_t instruction) {
// 4-116 (p220)
DecodeOp(MOVEl);
}
template <Model model>
Preinstruction Predecoder<model>::decode3(uint16_t instruction) {
// 4-116 (p220)
DecodeOp(MOVEw);
}
@ -354,7 +367,7 @@ template <Model model>
Preinstruction Predecoder<model>::decode4(uint16_t instruction) {
switch(instruction & 0xfff) {
case 0xe70: DecodeOp(RESET); // 6-83 (p537)
case 0xe71: DecodeOp(NOP); // 8-13 (p469)
case 0xe71: DecodeOp(NOP); // 4-147 (p251)
case 0xe73: DecodeOp(RTE); // 6-84 (p538)
case 0xe75: DecodeOp(RTS); // 4-169 (p273)
case 0xe76: DecodeOp(TRAPV); // 4-191 (p295)