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Finishing the TSB

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This commit is contained in:
Anonymus Raccoon
2020-04-08 11:39:43 +02:00
parent 5485534006
commit b9ff47584e
2 changed files with 30 additions and 2 deletions
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sources/CPU/Instructions/BitsInstructions.cpp
+6 -1
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@@ -2,6 +2,7 @@
// Created by anonymus-raccoon on 2/20/20.
//
#include <iostream>
#include "../../Models/Int24.hpp"
#include "../CPU.hpp"
@@ -9,9 +10,13 @@ namespace ComSquare::CPU
{
int CPU::TSB(uint24_t valueAddr, AddressingMode mode)
{
uint8_t value = this->_bus->read(valueAddr);
uint16_t value = this->_bus->read(valueAddr);
if (!this->_registers.p.m)
value += this->_bus->read(valueAddr + 1) << 8u;
value |= this->_registers.a;
this->_bus->write(valueAddr, value);
if (!this->_registers.p.m)
this->_bus->write(valueAddr + 1, value >> 8u);
this->_registers.p.z = value == 0;