mirror of
https://github.com/MoleskiCoder/EightBit.git
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c513f0cab1
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
42 lines
749 B
C++
42 lines
749 B
C++
#include "stdafx.h"
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#include "Processor.h"
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EightBit::Processor::Processor(Bus& bus)
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: m_bus(bus) {
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}
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void EightBit::Processor::reset() {
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PC().word = MEMPTR().word = 0;
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}
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void EightBit::Processor::initialise() {
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reset();
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}
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int EightBit::Processor::run(int limit) {
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int current = 0;
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while (LIKELY(powered()) && current < limit) {
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current += singleStep();
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}
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return current;
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}
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int EightBit::Processor::singleStep() {
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return step();
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}
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uint8_t EightBit::Processor::fetchByte() {
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return getByte(PC().word++);
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}
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void EightBit::Processor::fetchWord(register16_t& output) {
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output.low = fetchByte();
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output.high = fetchByte();
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}
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int EightBit::Processor::fetchExecute() {
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if (LIKELY(powered()))
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return execute(fetchByte());
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return 0;
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}
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