mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-16 22:28:57 +00:00
43 lines
908 B
C++
43 lines
908 B
C++
//
|
|
// CartridgeCommaVid.h
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 18/03/2017.
|
|
// Copyright © 2017 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef Atari2600_CartridgeCommaVid_hpp
|
|
#define Atari2600_CartridgeCommaVid_hpp
|
|
|
|
namespace Atari2600 {
|
|
|
|
class CartridgeCommaVid: public Cartridge<CartridgeCommaVid> {
|
|
public:
|
|
CartridgeCommaVid(const std::vector<uint8_t> &rom) :
|
|
Cartridge(rom) {}
|
|
|
|
void perform_bus_operation(CPU::MOS6502::BusOperation operation, uint16_t address, uint8_t *value) {
|
|
if(!(address & 0x1000)) return;
|
|
address &= 0x1fff;
|
|
|
|
if(address < 0x1400) {
|
|
if(isReadOperation(operation)) *value = ram_[address & 1023];
|
|
return;
|
|
}
|
|
|
|
if(address < 0x1800) {
|
|
ram_[address & 1023] = *value;
|
|
return;
|
|
}
|
|
|
|
if(isReadOperation(operation)) *value = rom_[address & 2047];
|
|
}
|
|
|
|
private:
|
|
uint8_t ram_[1024];
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* Atari2600_CartridgeCommaVid_hpp */
|