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Give modify stalls to fast NOPs.

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This commit is contained in:
Thomas Harte
2025-10-24 16:51:07 -04:00
parent 2e0e89c494
commit 0d72c75e15
1 changed files with 3 additions and 1 deletions
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4
Processors/6502Mk2/Decoder.hpp
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@@ -106,6 +106,7 @@ constexpr Type type_of(const Operation operation) {
case Operation::JSR: case Operation::RTI: case Operation::RTS:
case Operation::PHP: case Operation::PLP: case Operation::JMP:
case Operation::BBRBBS:
case Operation::FastNOP:
return Type::Modify;
case Operation::ORA: case Operation::AND: case Operation::EOR:
@@ -116,7 +117,7 @@ constexpr Type type_of(const Operation operation) {
case Operation::LDY: case Operation::LAX:
case Operation::ARR: case Operation::SBX: case Operation::LXA:
case Operation::ANE: case Operation::ANC: case Operation::LAS:
case Operation::NOP: case Operation::FastNOP:
case Operation::NOP:
return Type::Read;
case Operation::STA: case Operation::STX: case Operation::STY:
@@ -555,6 +556,7 @@ struct Decoder<model, std::enable_if_t<model == Model::Synertek65C02>> {
case 0x1c: return {Absolute, Operation::TRB};
case 0x3c: return {AbsoluteIndexed, Operation::BIT};
case 0x5c: return {AbsoluteIndexed, Operation::FastNOP};
case 0x9c: return {Absolute, Operation::STZ};
case 0x1e: return {FastAbsoluteIndexedModify, Operation::ASL};