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Fixed a missunderstanding of the pbr use

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This commit is contained in:
Anonymus Raccoon
2020-03-26 23:54:10 +01:00
parent 80ebfa8064
commit c9a40be3e2
7 changed files with 95 additions and 62 deletions
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sources/CPU/Instructions/InternalInstruction.cpp
+10 -10
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@@ -259,48 +259,48 @@ namespace ComSquare::CPU
int CPU::BCC(uint24_t valueAddr)
{
if (!this->_registers.p.c)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return !this->_registers.p.c;
}
int CPU::BCS(uint24_t valueAddr)
{
if (this->_registers.p.c)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return this->_registers.p.c;
}
int CPU::BEQ(uint24_t valueAddr)
{
if (this->_registers.p.z)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return this->_registers.p.z;
}
int CPU::BNE(uint24_t valueAddr)
{
if (!this->_registers.p.z)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return !this->_registers.p.z;
}
int CPU::BMI(uint24_t valueAddr)
{
if (this->_registers.p.n)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return this->_registers.p.n;
}
int CPU::BPL(uint24_t valueAddr)
{
if (!this->_registers.p.n)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return !this->_registers.p.n;
}
int CPU::BRA(uint24_t valueAddr)
{
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return true;
}
@@ -309,21 +309,21 @@ namespace ComSquare::CPU
unsigned value = this->_bus->read(valueAddr);
value += this->_bus->read(valueAddr + 1) << 8u;
this->_registers.pac += static_cast<int16_t>(value);
this->_registers.pc += static_cast<int16_t>(value);
return true;
}
int CPU::BVC(uint24_t valueAddr)
{
if (!this->_registers.p.v)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return !this->_registers.p.v;
}
int CPU::BVS(uint24_t valueAddr)
{
if (this->_registers.p.v)
this->_registers.pac += static_cast<int8_t>(this->_bus->read(valueAddr));
this->_registers.pc += static_cast<int8_t>(this->_bus->read(valueAddr));
return this->_registers.p.v;
}