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Attempted to regularise the 6502 with the Z80 as to scheduling. I think that at least one bug remains.

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This commit is contained in:
Thomas Harte 2017-05-30 20:36:53 -04:00
parent b5ad910b81
commit 5aa8b03349
1 changed files with 2 additions and 9 deletions
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11
Processors/6502/6502.hpp
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@ -557,7 +557,6 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
// These plus program below act to give the compiler permission to update these values
// without touching the class storage (i.e. it explicitly says they need be completely up
// to date in this stack frame only); which saves some complicated addressing
unsigned int scheduleProgramsReadPointer = schedule_programs_read_pointer_;
RegisterPair nextAddress = next_address_;
BusOperation nextBusOperation = next_bus_operation_;
uint16_t busAddress = bus_address_;
@ -565,7 +564,6 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
#define checkSchedule(op) \
if(!scheduled_program_counter_) {\
scheduleProgramsReadPointer = schedule_programs_write_pointer_ = 0;\
if(interrupt_requests_) {\
if(interrupt_requests_ & (InterruptRequestFlags::Reset | InterruptRequestFlags::PowerOn)) {\
interrupt_requests_ &= ~InterruptRequestFlags::PowerOn;\
@ -591,7 +589,6 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
checkSchedule();
number_of_cycles += cycles_left_to_run_;
const MicroOp *program = scheduled_programs_[scheduleProgramsReadPointer];
while(number_of_cycles > 0) {
@ -646,11 +643,8 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
continue;
case OperationMoveToNextProgram:
scheduled_programs_[scheduleProgramsReadPointer] = NULL;
scheduleProgramsReadPointer = (scheduleProgramsReadPointer+1)&3;
scheduled_program_counter_ = scheduled_programs_[scheduleProgramsReadPointer];
move_to_next_program();
checkSchedule();
program = scheduled_programs_[scheduleProgramsReadPointer];
continue;
#define push(v) {\
@ -713,7 +707,7 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
if(jam_handler_) {
jam_handler_->processor_did_jam(this, pc_.full - 1);
checkSchedule(is_jammed_ = false; program = scheduled_programs_[scheduleProgramsReadPointer]);
checkSchedule(is_jammed_ = false; scheduled_program_counter_ = scheduled_programs_[schedule_programs_read_pointer_]);
}
} continue;
@ -1081,7 +1075,6 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
}
cycles_left_to_run_ = number_of_cycles;
schedule_programs_read_pointer_ = scheduleProgramsReadPointer;
next_address_ = nextAddress;
next_bus_operation_ = nextBusOperation;
bus_address_ = busAddress;