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Switch the Macintosh to 68000 mk2.

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This commit is contained in:
Thomas Harte 2022-05-24 12:35:36 -04:00
parent 8ad1d6b813
commit a611a745e7
1 changed files with 24 additions and 24 deletions
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48
Machines/Apple/Macintosh/Macintosh.cpp
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@ -73,7 +73,7 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
public MachineTypes::MediaTarget,
public MachineTypes::MouseMachine,
public MachineTypes::MappedKeyboardMachine,
public CPU::MC68000::BusHandler,
public CPU::MC68000Mk2::BusHandler,
public Zilog::SCC::z8530::Delegate,
public Activity::Source,
public Configurable::Device,
@ -191,9 +191,9 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
mc68000_.run_for(cycles);
}
using Microcycle = CPU::MC68000::Microcycle;
using Microcycle = CPU::MC68000Mk2::Microcycle;
forceinline HalfCycles perform_bus_operation(const Microcycle &cycle, int) {
HalfCycles perform_bus_operation(const Microcycle &cycle, int) {
// Advance time.
advance_time(cycle.length);
@ -235,21 +235,21 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
// VIA accesses are via address 0xefe1fe + register*512,
// which at word precision is 0x77f0ff + register*256.
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = via_.read(register_address);
cycle.value->b = via_.read(register_address);
} else {
via_.write(register_address, cycle.value->halves.low);
via_.write(register_address, cycle.value->b);
}
if(cycle.operation & Microcycle::SelectWord) cycle.value->halves.high = 0xff;
if(cycle.operation & Microcycle::SelectWord) cycle.value->w |= 0xff00;
}
} return delay;
case BusDevice::PhaseRead: {
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = phase_ & 7;
cycle.value->b = phase_ & 7;
}
if(cycle.operation & Microcycle::SelectWord) cycle.value->halves.high = 0xff;
if(cycle.operation & Microcycle::SelectWord) cycle.value->w |= 0xff00;
} return delay;
case BusDevice::IWM: {
@ -258,12 +258,12 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
// The IWM; this is a purely polled device, so can be run on demand.
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = iwm_->read(register_address);
cycle.value->b = iwm_->read(register_address);
} else {
iwm_->write(register_address, cycle.value->halves.low);
iwm_->write(register_address, cycle.value->b);
}
if(cycle.operation & Microcycle::SelectWord) cycle.value->halves.high = 0xff;
if(cycle.operation & Microcycle::SelectWord) cycle.value->w |= 0xff00;
} else {
fill_unmapped(cycle);
}
@ -280,9 +280,9 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
scsi_.write(register_address, 0xff, dma_acknowledge);
} else {
if(cycle.operation & Microcycle::SelectWord) {
scsi_.write(register_address, cycle.value->halves.high, dma_acknowledge);
scsi_.write(register_address, cycle.value->w >> 8, dma_acknowledge);
} else {
scsi_.write(register_address, cycle.value->halves.low, dma_acknowledge);
scsi_.write(register_address, cycle.value->b, dma_acknowledge);
}
}
} else {
@ -291,9 +291,9 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
const auto result = scsi_.read(register_address, dma_acknowledge);
if(cycle.operation & Microcycle::SelectWord) {
// Data is loaded on the top part of the bus only.
cycle.value->full = uint16_t((result << 8) | 0xff);
cycle.value->w = uint16_t((result << 8) | 0xff);
} else {
cycle.value->halves.low = result;
cycle.value->b = result;
}
}
}
@ -309,12 +309,12 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
scc_.reset();
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = 0xff;
cycle.value->b = 0xff;
}
} else {
const auto read = scc_.read(int(address >> 1));
if(cycle.operation & Microcycle::Read) {
cycle.value->halves.low = read;
cycle.value->b = read;
}
}
}
@ -328,9 +328,9 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
if(*cycle.address & 1) {
if(cycle.operation & Microcycle::Read) {
scc_.write(int(address >> 1), 0xff);
cycle.value->halves.low = 0xff;
cycle.value->b = 0xff;
} else {
scc_.write(int(address >> 1), cycle.value->halves.low);
scc_.write(int(address >> 1), cycle.value->b);
}
} else {
fill_unmapped(cycle);
@ -373,16 +373,16 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
break;
case Microcycle::SelectWord | Microcycle::Read:
cycle.value->full = *reinterpret_cast<uint16_t *>(&memory_base[address]);
cycle.value->w = *reinterpret_cast<uint16_t *>(&memory_base[address]);
break;
case Microcycle::SelectByte | Microcycle::Read:
cycle.value->halves.low = memory_base[address];
cycle.value->b = memory_base[address];
break;
case Microcycle::SelectWord:
*reinterpret_cast<uint16_t *>(&memory_base[address]) = cycle.value->full;
*reinterpret_cast<uint16_t *>(&memory_base[address]) = cycle.value->w;
break;
case Microcycle::SelectByte:
memory_base[address] = cycle.value->halves.low;
memory_base[address] = cycle.value->b;
break;
}
@ -771,7 +771,7 @@ template <Analyser::Static::Macintosh::Target::Model model> class ConcreteMachin
Inputs::QuadratureMouse &mouse_;
};
CPU::MC68000::Processor<ConcreteMachine, true> mc68000_;
CPU::MC68000Mk2::Processor<ConcreteMachine, true, true> mc68000_;
DriveSpeedAccumulator drive_speed_accumulator_;
IWMActor iwm_;