ComSquare::CPU::CPU Class Reference

The main CPU. More...

#include <CPU.hpp>

Inheritance diagram for ComSquare::CPU::CPU:

Collaboration diagram for ComSquare::CPU::CPU:

Public Member Functions
	CPU (std::shared_ptr< Memory::MemoryBus > bus)
int	update ()
	This function continue to execute the Cartridge code. More...
uint8_t	read (uint24_t addr) override
	Read from the internal CPU register. More...
void	write (uint24_t addr, uint8_t data) override
	Write data to the internal CPU register. More...
Public Member Functions inherited from ComSquare::Memory::IMemory
void	setMemoryRegion (uint24_t start, uint24_t end)
	Change starting and ending points of this mapped memory. More...
virtual bool	hasMemoryAt (uint24_t addr)
	Return true if this component has mapped the address. More...
virtual uint24_t	getStart ()
	Get the first address mapped to this component. More...

Private Member Functions
int	executeInstruction ()
	Execute a single instruction. More...

Private Attributes
Registers	_registers {}
	All the registers of the CPU. More...
bool	_isEmulationMode = true
	Is the CPU running in emulation mode (in 8bits) More...
InternalRegisters	_internalRegisters {}
	Internal registers of the CPU (accessible from the bus via addr $4200 to $421F). More...
std::shared_ptr< Memory::MemoryBus >	_bus
	The memory bus to use for read/write. More...

Detailed Description

The main CPU.

Constructor & Destructor Documentation

CPU()

ComSquare::CPU::CPU::CPU ( std::shared_ptr< Memory::MemoryBus >  bus )

explicit

Member Function Documentation

executeInstruction()

int ComSquare::CPU::CPU::executeInstruction ( )

private

Execute a single instruction.

Returns

The number of CPU cycles that the instruction took.

read()

uint8_t ComSquare::CPU::CPU::read ( uint24_t  addr )

overridevirtual

Read from the internal CPU register.

@bref The CPU's internal registers starts at $4200 and finish at $421F.

Parameters

addr	The address to read from. The address 0x0 should refer to the first byte of the register.

Exceptions

InvalidAddress

will be thrown if the address is more than $1F (the number of register).

Returns

Return the value of the register.

Implements ComSquare::Memory::IMemory.

update()

int ComSquare::CPU::CPU::update

(

)

This function continue to execute the Cartridge code.

Returns

The number of CPU cycles that elapsed

write()

void ComSquare::CPU::CPU::write ( uint24_t  addr, uint8_t  data  )

overridevirtual

Write data to the internal CPU register.

Parameters

addr	The address to write to. The address 0x0 should refer to the first byte of register.
data	The new value of the register.

Exceptions

InvalidAddress

will be thrown if the address is more than $1F (the number of register).

Implements ComSquare::Memory::IMemory.

Member Data Documentation

_bus

std::shared_ptr<Memory::MemoryBus> ComSquare::CPU::CPU::_bus

private

The memory bus to use for read/write.

_internalRegisters

InternalRegisters ComSquare::CPU::CPU::_internalRegisters {}

private

Internal registers of the CPU (accessible from the bus via addr $4200 to $421F).

_isEmulationMode

bool ComSquare::CPU::CPU::_isEmulationMode = true

private

Is the CPU running in emulation mode (in 8bits)

_registers

Registers ComSquare::CPU::CPU::_registers {}

private

All the registers of the CPU.

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The documentation for this class was generated from the following files:

• sources/CPU/CPU.hpp
• sources/CPU/CPU.cpp