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Merge pull request #917 from TomHarte/InterruptAddress

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Put the program counter on the bus during interrupt acknowledge.
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Thomas Harte 2021-04-19 20:08:22 -04:00 committed by GitHub
commit 6f4ccebfa1
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1 changed files with 7 additions and 7 deletions
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14
Processors/Z80/Implementation/Z80Storage.cpp
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@ -38,9 +38,9 @@ ProcessorStorage::ProcessorStorage() {
#define OutputWait(addr, val, f) PartialMachineCycle(PartialMachineCycle::OutputWait, HalfCycles(2), &addr.full, &val, f)
#define OutputEnd(addr, val) PartialMachineCycle(PartialMachineCycle::Output, HalfCycles(3), &addr.full, &val, false)
#define IntAckStart(length, val) PartialMachineCycle(PartialMachineCycle::InterruptStart, HalfCycles(length), nullptr, &val, false)
#define IntWait(val) PartialMachineCycle(PartialMachineCycle::InterruptWait, HalfCycles(2), nullptr, &val, true)
#define IntAckEnd(val) PartialMachineCycle(PartialMachineCycle::Interrupt, HalfCycles(3), nullptr, &val, false)
#define IntAckStart(length, val) PartialMachineCycle(PartialMachineCycle::InterruptStart, HalfCycles(length), &pc_.full, &val, false)
#define IntWait(val) PartialMachineCycle(PartialMachineCycle::InterruptWait, HalfCycles(2), &pc_.full, &val, true)
#define IntAckEnd(val) PartialMachineCycle(PartialMachineCycle::Interrupt, HalfCycles(3), &pc_.full, &val, false)
// A wrapper to express a bus operation as a micro-op
@ -83,10 +83,10 @@ ProcessorStorage::ProcessorStorage() {
/* The following are actual instructions */
#define NOP { {MicroOp::MoveToNextProgram} }
#define JP(cc) Sequence(Read16Inc(pc_, memptr_), {MicroOp::cc, nullptr}, {MicroOp::Move16, &memptr_.full, &pc_.full})
#define JP(cc) Sequence(Read16Inc(pc_, memptr_), {MicroOp::cc}, {MicroOp::Move16, &memptr_.full, &pc_.full})
#define CALL(cc) Sequence(ReadInc(pc_, memptr_.halves.low), {MicroOp::cc, conditional_call_untaken_program_.data()}, ReadInc(pc_, memptr_.halves.high), InternalOperation(2), Push(pc_), {MicroOp::Move16, &memptr_.full, &pc_.full})
#define RET(cc) Sequence(InternalOperation(2), {MicroOp::cc, nullptr}, Pop(memptr_), {MicroOp::Move16, &memptr_.full, &pc_.full})
#define JR(cc) Sequence(ReadInc(pc_, temp8_), {MicroOp::cc, nullptr}, InternalOperation(10), {MicroOp::CalculateIndexAddress, &pc_.full}, {MicroOp::Move16, &memptr_.full, &pc_.full})
#define RET(cc) Sequence(InternalOperation(2), {MicroOp::cc}, Pop(memptr_), {MicroOp::Move16, &memptr_.full, &pc_.full})
#define JR(cc) Sequence(ReadInc(pc_, temp8_), {MicroOp::cc}, InternalOperation(10), {MicroOp::CalculateIndexAddress, &pc_.full}, {MicroOp::Move16, &memptr_.full, &pc_.full})
#define RST() Sequence(InternalOperation(2), {MicroOp::CalculateRSTDestination}, Push(pc_), {MicroOp::Move16, &memptr_.full, &pc_.full})
#define LD(a, b) Sequence({MicroOp::Move8, &b, &a})
@ -180,7 +180,7 @@ void ProcessorStorage::install_default_instruction_set() {
BusOp(Refresh()),
InternalOperation(2),
Push(pc_),
{ MicroOp::JumpTo66, nullptr, nullptr},
{ MicroOp::JumpTo66 },
{ MicroOp::MoveToNextProgram }
};
MicroOp irq_mode0_program[] = {