zoriya/ComSquare
1
0
Fork 0
mirror of https://github.com/zoriya/ComSquare.git synced 2026-05-31 09:32:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

Solving mistakes about the m flag

Browse Source
This commit is contained in:
Anonymus Raccoon
2020-02-28 00:37:17 +01:00
parent 4394c7625e
commit 6c3c832539
11 changed files with 84 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sources/CPU/Instructions/MathematicalOperations.cpp
+2 -2
View File
@@ -10,7 +10,7 @@ namespace ComSquare::CPU
void CPU::ADC(uint24_t valueAddr)
{
unsigned value = this->_bus->read(valueAddr) + this->_registers.p.c;
if (this->_registers.p.m)
if (!this->_registers.p.m)
value += this->_bus->read(valueAddr + 1) << 8u;
unsigned negativeMask = this->_isEmulationMode ? 0x80u : 0x8000u;
unsigned maxValue = this->_isEmulationMode ? UINT8_MAX : UINT16_MAX;
@@ -31,7 +31,7 @@ namespace ComSquare::CPU
{
unsigned negativeMask = this->_isEmulationMode ? 0x80u : 0x8000u;
unsigned value = this->_bus->read(valueAddr);
if (this->_registers.p.m)
if (!this->_registers.p.m)
value += this->_bus->read(valueAddr + 1) << 8u;
bool oldCarry = this->_registers.p.c;