60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
#include "stdafx.h"
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#include "../inc/BigEndianProcessor.h"
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EightBit::BigEndianProcessor::BigEndianProcessor(Bus& memory) noexcept
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: Processor(memory) {}
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EightBit::register16_t EightBit::BigEndianProcessor::getWord() {
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const auto high = memoryRead();
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++BUS().ADDRESS();
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const auto low = memoryRead();
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return { low, high };
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}
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void EightBit::BigEndianProcessor::setWord(const register16_t value) {
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memoryWrite(value.high);
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++BUS().ADDRESS();
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memoryWrite(value.low);
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}
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EightBit::register16_t EightBit::BigEndianProcessor::getWordPaged() {
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const auto high = memoryRead();
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++BUS().ADDRESS().low;
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const auto low = memoryRead();
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return { low, high };
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}
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void EightBit::BigEndianProcessor::setWordPaged(const register16_t value) {
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memoryWrite(value.high);
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++BUS().ADDRESS().low;
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memoryWrite(value.low);
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}
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EightBit::register16_t EightBit::BigEndianProcessor::fetchWord() {
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const auto high = fetchByte();
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const auto low = fetchByte();
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return { low, high };
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}
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void EightBit::BigEndianProcessor::pushWord(const register16_t value) {
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push(value.low);
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push(value.high);
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}
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EightBit::register16_t EightBit::BigEndianProcessor::popWord() {
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const auto high = pop();
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const auto low = pop();
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return { low, high };
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}
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EightBit::register16_t EightBit::BigEndianProcessor::peekWord(const register16_t address) noexcept {
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const auto high = BUS().peek(address);
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const auto low = BUS().peek(address + 1);
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return { low, high };
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}
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void EightBit::BigEndianProcessor::pokeWord(const register16_t address, const register16_t value) noexcept {
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BUS().poke(address, value.high);
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BUS().poke(address + 1, value.low);
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}
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