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63 lines
996 B
C++
63 lines
996 B
C++
//
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// Electron.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 03/01/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#include "Electron.hpp"
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#include <algorithm>
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using namespace Electron;
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Machine::Machine()
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{
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setup6502();
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}
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Machine::~Machine()
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{
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}
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unsigned int Machine::perform_bus_operation(CPU6502::BusOperation operation, uint16_t address, uint8_t *value)
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{
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if(address < 32768)
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{
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if(isReadOperation(operation))
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{
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*value = ram[address];
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}
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else
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{
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ram[address] = *value;
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}
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}
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else
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{
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if(address > 49152)
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{
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if(isReadOperation(operation)) *value = os[address - 49152];
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}
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else
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{
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if(isReadOperation(operation)) *value = basic[address - 32768];
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}
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}
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return 1;
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}
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void Machine::set_rom(ROMSlot slot, size_t length, const uint8_t *data)
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{
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uint8_t *target = nullptr;
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switch(slot)
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{
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case ROMTypeBASIC: target = basic; break;
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case ROMTypeOS: target = os; break;
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}
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memcpy(target, data, std::min((size_t)16384, length));
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}
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