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Enabling the memory bus debugger

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This commit is contained in:
Zoe Roux
2021-07-05 00:23:48 +02:00
parent f16815c36f
commit cb6fb8a240
20 changed files with 475 additions and 418 deletions
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38
sources/CPU/AddressingModes.cpp
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@@ -64,8 +64,8 @@ namespace ComSquare::CPU
uint24_t CPU::_getDirectIndirectIndexedYAddr()
{
uint16_t dp = this->readPC() + this->_registers.d;
uint24_t base = this->_bus.read(dp);
base += this->_bus.read(dp + 1) << 8u;
uint24_t base = this->getBus().read(dp);
base += this->getBus().read(dp + 1) << 8u;
base += this->_registers.dbr << 16u;
if ((base & 0x80000000u) == (((base + this->_registers.y) & 0x80000000u)))
this->_hasIndexCrossedPageBoundary = true;
@@ -75,9 +75,9 @@ namespace ComSquare::CPU
uint24_t CPU::_getDirectIndirectIndexedYLongAddr()
{
uint16_t dp = this->readPC() + this->_registers.d;
uint24_t base = this->_bus.read(dp);
base += this->_bus.read(dp + 1) << 8u;
base += this->_bus.read(dp + 2) << 16u;
uint24_t base = this->getBus().read(dp);
base += this->getBus().read(dp + 1) << 8u;
base += this->getBus().read(dp + 2) << 16u;
return base;
}
@@ -85,8 +85,8 @@ namespace ComSquare::CPU
{
uint16_t dp = this->readPC() + this->_registers.d;
dp += this->_registers.x;
uint24_t base = this->_bus.read(dp);
base += this->_bus.read(dp + 1) << 8u;
uint24_t base = this->getBus().read(dp);
base += this->getBus().read(dp + 1) << 8u;
base += this->_registers.dbr << 16u;
return base;
}
@@ -137,8 +137,8 @@ namespace ComSquare::CPU
{
uint16_t abs = this->readPC();
abs += this->readPC() << 8u;
uint24_t effective = this->_bus.read(abs);
effective += this->_bus.read(abs + 1) << 8u;
uint24_t effective = this->getBus().read(abs);
effective += this->getBus().read(abs + 1) << 8u;
return effective;
}
@@ -146,9 +146,9 @@ namespace ComSquare::CPU
{
uint16_t abs = this->readPC();
abs += this->readPC() << 8u;
uint24_t effective = this->_bus.read(abs);
effective += this->_bus.read(abs + 1) << 8u;
effective += this->_bus.read(abs + 2) << 16u;
uint24_t effective = this->getBus().read(abs);
effective += this->getBus().read(abs + 1) << 8u;
effective += this->getBus().read(abs + 2) << 16u;
return effective;
}
@@ -157,16 +157,16 @@ namespace ComSquare::CPU
uint24_t abs = this->readPC();
abs += this->readPC() << 8u;
abs += this->_registers.x;
uint24_t effective = this->_bus.read(abs);
effective += this->_bus.read(abs + 1) << 8u;
uint24_t effective = this->getBus().read(abs);
effective += this->getBus().read(abs + 1) << 8u;
return effective;
}
uint24_t CPU::_getDirectIndirectAddr()
{
uint16_t dp = this->readPC() + this->_registers.d;
uint24_t effective = this->_bus.read(dp);
effective += this->_bus.read(dp + 1) << 8u;
uint24_t effective = this->getBus().read(dp);
effective += this->getBus().read(dp + 1) << 8u;
effective += this->_registers.dbr << 16u;
return effective;
}
@@ -174,9 +174,9 @@ namespace ComSquare::CPU
uint24_t CPU::_getDirectIndirectLongAddr()
{
uint16_t dp = this->readPC() + this->_registers.d;
uint24_t effective = this->_bus.read(dp);
effective += this->_bus.read(++dp) << 8u;
effective += this->_bus.read(++dp) << 16u;
uint24_t effective = this->getBus().read(dp);
effective += this->getBus().read(++dp) << 8u;
effective += this->getBus().read(++dp) << 16u;
return effective;
}