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Ensures ADB microcontroller is clocked.

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And runs at the 'correct' speed (i.e. modulo my instruction-by-instruction implementation).
This commit is contained in:
Thomas Harte
2021-01-23 22:55:12 -05:00
parent 7f62732476
commit 57e0fdfadc
5 changed files with 25 additions and 17 deletions
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InstructionSets/M50740/Executor.cpp
+4 -5
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@@ -35,13 +35,12 @@ void Executor::set_rom(const std::vector<uint8_t> &rom) {
const auto length = std::min(size_t(0x1000), rom.size());
memcpy(&memory_[0x2000 - length], rom.data(), length);
reset();
// TEMPORARY: just to test initial wiring.
run_for(Cycles(13000));
}
void Executor::run_for(Cycles cycles) {
CachingExecutor::run_for(cycles.as<int>());
// The incoming clock is divided by four.
cycles_ += cycles;
CachingExecutor::run_for(cycles_.divide(Cycles(4)).as<int>());
}
void Executor::reset() {
@@ -128,7 +127,7 @@ template<bool is_brk> inline void Executor::perform_interrupt() {
}
template <Operation operation, AddressingMode addressing_mode> void Executor::perform() {
printf("%04x\t%02x\t%d %d\t[x:%02x s:%02x]\t(%s)\n", program_counter_ & 0x1fff, memory_[program_counter_ & 0x1fff], int(operation), int(addressing_mode), x_, s_, __PRETTY_FUNCTION__ );
// printf("%04x\t%02x\t%d %d\t[x:%02x s:%02x]\t(%s)\n", program_counter_ & 0x1fff, memory_[program_counter_ & 0x1fff], int(operation), int(addressing_mode), x_, s_, __PRETTY_FUNCTION__ );
// Post cycle cost; this emulation _does not provide accurate timing_.
#define TLength(mode, base) case AddressingMode::mode: subtract_duration(base + t_lengths[index_mode_]); break;