ComSquare::CPU::Registers Struct Reference

Struct containing registers for the main CPU. More...

#include <Registers.hpp>

Collaboration diagram for ComSquare::CPU::Registers:

Public Attributes
union {
struct {
uint8_t   al
uint8_t   ah
}
uint16_t   a
};
	The Accumulator. More...
uint8_t	dbr
	The Data Bank Register;. More...
union {
struct {
uint8_t   dl
uint8_t   dh
}
uint16_t   d
};
	The Direct Page register;. More...
union {
struct {
union {
struct {
uint8_t   pcl
uint8_t   pch
}
uint16_t   pc
}
	The Program Counter;. More...
uint8_t   pbr
	The Program Bank Register;. More...
}
uint24_t   pac
	The current Program Address Counter (does not exist in a snes but is useful here). More...
};
union {
struct {
uint8_t   sl
uint8_t   sh
}
uint16_t   s
};
	The Stack pointer. More...
union {
struct {
uint8_t   xl
uint8_t   xh
}
uint16_t   x
};
	The X index register. More...
union {
struct {
uint8_t   yl
uint8_t   yh
}
uint16_t   y
};
	The Y index register. More...
union {
struct {
bool   c: 1
	The Carry flag. More...
bool   z: 1
	The Zero flag. More...
bool   i: 1
	The Interrupt request disable flag. More...
bool   d: 1
	The Decimal mode flag. More...
bool   x_b: 1
	The indeX register width flag (in native mode only) - 0 = 16 bits mode, 1 = 8 bits mode OR the Break flag (in emulation mode only) More...
bool   m: 1
	The accumulator and Memory width flag (in native mode only) - 0 = 16 bits mode, 1 = 8 bits mode. More...
bool   v: 1
	The oVerflow flag. More...
bool   n: 1
	The Negative flag. More...
}
uint8_t   flags
}	p
	The Processor status register;. More...

Detailed Description

Struct containing registers for the main CPU.

Member Data Documentation

@46

union { ... }

The Accumulator.

@48

union { ... }

The Direct Page register;.

@50

union { ... }

@52

union { ... }

The Stack pointer.

@54

union { ... }

The X index register.

@56

union { ... }

The Y index register.

a

uint16_t ComSquare::CPU::Registers::a

ah

uint8_t ComSquare::CPU::Registers::ah

al

uint8_t ComSquare::CPU::Registers::al

c

bool ComSquare::CPU::Registers::c

The Carry flag.

d [1/2]

uint16_t ComSquare::CPU::Registers::d

d [2/2]

bool ComSquare::CPU::Registers::d

The Decimal mode flag.

dbr

uint8_t ComSquare::CPU::Registers::dbr

The Data Bank Register;.

dh

uint8_t ComSquare::CPU::Registers::dh

dl

uint8_t ComSquare::CPU::Registers::dl

flags

uint8_t ComSquare::CPU::Registers::flags

i

bool ComSquare::CPU::Registers::i

The Interrupt request disable flag.

m

bool ComSquare::CPU::Registers::m

The accumulator and Memory width flag (in native mode only) - 0 = 16 bits mode, 1 = 8 bits mode.

n

bool ComSquare::CPU::Registers::n

The Negative flag.

p

union { ... } ComSquare::CPU::Registers::p

The Processor status register;.

pac

uint24_t ComSquare::CPU::Registers::pac

The current Program Address Counter (does not exist in a snes but is useful here).

pbr

uint8_t ComSquare::CPU::Registers::pbr

The Program Bank Register;.

pc

uint16_t ComSquare::CPU::Registers::pc

pch

uint8_t ComSquare::CPU::Registers::pch

pcl

uint8_t ComSquare::CPU::Registers::pcl

s

uint16_t ComSquare::CPU::Registers::s

sh

uint8_t ComSquare::CPU::Registers::sh

sl

uint8_t ComSquare::CPU::Registers::sl

v

bool ComSquare::CPU::Registers::v

The oVerflow flag.

x

uint16_t ComSquare::CPU::Registers::x

x_b

bool ComSquare::CPU::Registers::x_b

The indeX register width flag (in native mode only) - 0 = 16 bits mode, 1 = 8 bits mode OR the Break flag (in emulation mode only)

xh

uint8_t ComSquare::CPU::Registers::xh

xl

uint8_t ComSquare::CPU::Registers::xl

y

uint16_t ComSquare::CPU::Registers::y

yh

uint8_t ComSquare::CPU::Registers::yh

yl

uint8_t ComSquare::CPU::Registers::yl

z

bool ComSquare::CPU::Registers::z

The Zero flag.

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The documentation for this struct was generated from the following file:

• sources/CPU/Registers.hpp