Ay_Cpu.cpp File Reference

#include "Ay_Cpu.h"
#include "blargg_endian.h"
#include <string.h>
#include "blargg_source.h"

Macros
#define	SYNC_TIME()
#define	RELOAD_TIME()
#define	CPU_OUT(cpu, addr, data, TIME)
#define	CPU_IN(cpu, addr, TIME)
#define	SZ28P(n)
#define	SZ28PC(n)
#define	SZ28C(n)
#define	SZ28(n)
#define	SET_R(n)
#define	GET_R()
#define	TIME   (s_time + s.base)
#define	READ_PROG(addr)
#define	INSTR(offset)
#define	GET_ADDR()
#define	READ(addr)
#define	WRITE(addr, data)
#define	READ_WORD(addr)
#define	WRITE_WORD(addr, data)
#define	IN(addr)
#define	OUT(addr, data)
#define	R8(n, offset)
#define	R16(n, shift, offset)
#define	CASE5(a, b, c, d, e)
#define	CASE6(a, b, c, d, e, f)
#define	CASE7(a, b, c, d, e, f, g)
#define	CASE8(a, b, c, d, e, f, g, h)
#define	ZERO   (flags & Z40)
#define	CARRY   (flags & C01)
#define	EVEN   (flags & P04)
#define	MINUS   (flags & S80)
#define	JR(cond)
#define	JP(cond)
#define	RET(cond)
#define	CALL(cond)
#define	RLC(read, write)
#define	RL(read, write)
#define	SLA(read, add, write)
#define	RRC(read, write)
#define	RR(read, write)
#define	SRA(read, write)
#define	SRL(read, write)
#define	IXY_DISP(ixy, disp)
#define	SET_IXY(in)

Variables
int const	S80 = 0x80
int const	Z40 = 0x40
int const	F20 = 0x20
int const	H10 = 0x10
int const	F08 = 0x08
int const	V04 = 0x04
int const	P04 = 0x04
int const	N02 = 0x02
int const	C01 = 0x01
static byte const	ed_dd_timing [0x100]

Macro Definition Documentation

CALL

#define CALL

(

cond

)

Value:

if ( cond ) goto call_taken; goto call_not_taken;

CARRY

#define CARRY   (flags & C01)

CASE5

#define CASE5	(		a,
			b,
			c,
			d,
			e )

Value:

case 0x##a:case 0x##b:case 0x##c:case 0x##d:case 0x##e

CASE6

#define CASE6	(		a,
			b,
			c,
			d,
			e,
			f )

Value:

CASE5( a, b, c, d, e       ): case 0x##f

CASE7

#define CASE7	(		a,
			b,
			c,
			d,
			e,
			f,
			g )

Value:

CASE6( a, b, c, d, e, f    ): case 0x##g

CASE8

#define CASE8	(		a,
			b,
			c,
			d,
			e,
			f,
			g,
			h )

Value:

CASE7( a, b, c, d, e, f, g ): case 0x##h

CPU_IN

#define CPU_IN	(		cpu,
			addr,
			TIME )

Value:

ay_cpu_in( cpu, addr )

CPU_OUT

#define CPU_OUT	(		cpu,
			addr,
			data,
			TIME )

Value:

ay_cpu_out( cpu, TIME, addr, data )

EVEN

#define EVEN   (flags & P04)

GET_ADDR

#define GET_ADDR

(

)

Value:

GET_LE16( &READ_PROG( pc ) )

GET_R

#define GET_R

(

)

Value:

(r.r)

IN

#define IN

(

addr

)

Value:

CPU_IN( this, addr, TIME )

INSTR

#define INSTR

(

offset

)

Value:

READ_PROG( pc + (offset) )

IXY_DISP

#define IXY_DISP	(		ixy,
			disp )

Value:

uint16_t ((ixy) + (disp))

JP

#define JP

(

cond

)

Value:

if ( !(cond) ) goto jp_not_taken; pc = GET_ADDR(); goto loop;

JR

#define JR

(

cond

)

Value:

        {\
        int disp = (int8_t) data;\
        pc++;\
        if ( !(cond) )\
                goto jr_not_taken;\
        pc += disp;\
        goto loop;\
}

MINUS

#define MINUS   (flags & S80)

OUT

#define OUT	(		addr,
			data )

Value:

CPU_OUT( this, addr, data, TIME )

R16

#define R16	(		n,
			shift,
			offset )

Value:

(*(uint16_t*) ((char*) r16_ - (offset >> (shift - 1)) + ((n) >> (shift - 1))))

R8

#define R8	(		n,
			offset )

Value:

((r8_ - offset) [(n) ^ 1])

READ

#define READ

(

addr

)

Value:

READ_PROG( addr )

READ_PROG

#define READ_PROG

(

addr

)

Value:

(mem [addr])

READ_WORD

#define READ_WORD

(

addr

)

Value:

GET_LE16( &READ_PROG( addr ) )

RELOAD_TIME

#define RELOAD_TIME

(

)

Value:

(void) (s_time = s.time)

RET

#define RET

(

cond

)

Value:

if ( cond ) goto ret_taken; s_time -= 6; goto loop;

RL

#define RL	(		read,
			write )

Value:

        {\
        uint16_t result = (read << 1) | (flags & C01);\
        flags = SZ28PC( result );\
        write;\
        goto loop;\
}

RLC

#define RLC	(		read,
			write )

Value:

        {\
        uint8_t result = read;\
        result = uint8_t (result << 1) | (result >> 7);\
        flags = SZ28P( result ) | (result & C01);\
        write;\
        goto loop;\
}

RR

#define RR	(		read,
			write )

Value:

        {\
        uint8_t result = read;\
        uint8_t temp = result & C01;\
        result = uint8_t (flags << 7) | (result >> 1);\
        flags = SZ28P( result ) | temp;\
        write;\
        goto loop;\
}

RRC

#define RRC	(		read,
			write )

Value:

        {\
        uint8_t result = read;\
        flags = result & C01;\
        result = uint8_t (result << 7) | (result >> 1);\
        flags |= SZ28P( result );\
        write;\
        goto loop;\
}

SET_IXY

#define SET_IXY

(

in

)

Value:

if ( opcode == 0xDD ) ix = in; else iy = in;

SET_R

#define SET_R

(

n

)

Value:

(void) (r.r = n)

SLA

#define SLA	(		read,
			add,
			write )

Value:

        {\
        uint16_t result = (read << 1) | add;\
        flags = SZ28PC( result );\
        write;\
        goto loop;\
}

SRA

#define SRA	(		read,
			write )

Value:

        {\
        uint8_t result = read;\
        flags = result & C01;\
        result = (result & 0x80) | (result >> 1);\
        flags |= SZ28P( result );\
        write;\
        goto loop;\
}

SRL

#define SRL	(		read,
			write )

Value:

        {\
        uint8_t result = read;\
        flags = result & C01;\
        result >>= 1;\
        flags |= SZ28P( result );\
        write;\
        goto loop;\
}

SYNC_TIME

#define SYNC_TIME

(

)

Value:

(void) (s.time = s_time)

SZ28

#define SZ28

(

n

)

Value:

SZ28C( n )

SZ28C

#define SZ28C

(

n

)

Value:

(szpc [n] & ~P04)

SZ28P

#define SZ28P

(

n

)

Value:

szpc [n]

SZ28PC

#define SZ28PC

(

n

)

Value:

szpc [n]

TIME

#define TIME   (s_time + s.base)

WRITE

#define WRITE	(		addr,
			data )

Value:

(void) (READ_PROG( addr ) = data)

WRITE_WORD

#define WRITE_WORD	(		addr,
			data )

Value:

SET_LE16( &READ_PROG( addr ), data )

ZERO

#define ZERO   (flags & Z40)

Variable Documentation

C01

int const C01 = 0x01

ed_dd_timing

byte const ed_dd_timing[0x100]

static

Initial value:

                                = {
 
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x06,0x0C,0x02,0x00,0x00,0x03,0x00,0x00,0x07,0x0C,0x02,0x00,0x00,0x03,0x00,
0x00,0x00,0x00,0x00,0x0F,0x0F,0x0B,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,
0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0x10,0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0x10,
0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0x10,0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0x10,
0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0xA0,0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0xA0,
0x4B,0x4B,0x7B,0xCB,0x0B,0x6B,0x00,0x0B,0x40,0x40,0x70,0xC0,0x00,0x60,0x0B,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x0B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0B,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x0B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0B,0x00,
0x80,0x80,0x80,0x80,0x00,0x00,0x0B,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0B,0x00,
0xD0,0xD0,0xD0,0xD0,0x00,0x00,0x0B,0x00,0xD0,0xD0,0xD0,0xD0,0x00,0x00,0x0B,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x06,0x00,0x0F,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,
}

F08

int const F08 = 0x08

F20

int const F20 = 0x20

H10

int const H10 = 0x10

N02

int const N02 = 0x02

P04

int const P04 = 0x04

S80

int const S80 = 0x80

V04

int const V04 = 0x04

Z40

int const Z40 = 0x40