vcslib.h File Reference

#include <atari2600.h>
#include <stdint.h>

Include dependency graph for vcslib.h:

Go to the source code of this file.

Macros
#define	set_horiz_pos(objindex, xpos)   _set_horiz_pos(xpos,objindex)
#define	do_wsync()   __attribute__((leaf)) asm volatile("sta $42 /* WSYNC */");
#define	apply_hmove()   __attribute__((leaf)) asm volatile("sta $42 /* WSYNC */" "\n" "sta $6a /* HMOVE */");
#define	P0   0
#define	P1   1
#define	M0   2
#define	M1   3
#define	BALL   4
#define	SW_RESET()   ((RIOT.swchb & RESET_MASK) == 0)
#define	SW_SELECT()   ((RIOT.swchb & SELECT_MASK) == 0)
#define	SW_COLOR()   ((RIOT.swchb & BW_MASK) != 0)
#define	SW_P0_PRO()   ((RIOT.swchb & P0_DIFF_MASK) != 0)
#define	SW_P1_PRO()   ((RIOT.swchb & P1_DIFF_MASK) != 0)
#define	JOY_UP(plyr)   (!(RIOT.swcha & ((plyr) ? 0x1 : ~MOVE_UP)))
#define	JOY_DOWN(plyr)   (!(RIOT.swcha & ((plyr) ? 0x2 : ~MOVE_DOWN)))
#define	JOY_LEFT(plyr)   (!(RIOT.swcha & ((plyr) ? 0x4 : ~MOVE_LEFT)))
#define	JOY_RIGHT(plyr)   (!(RIOT.swcha & ((plyr) ? 0x8 : ~MOVE_RIGHT)))
#define	JOY_FIRE(plyr)   !(((plyr) ? TIA.inpt5 : TIA.inpt4) & 0x80)
#define	COLOR_CONV(color)   (SW_COLOR() ? color : color & 0x0f)
#define	_CYCLES(lines)   (((lines) * 76) - 13)
#define	_TIM64(cycles)   (((cycles) >> 6) - (((cycles) & 63) < 12))
#define	_T1024(cycles)   ((cycles) >> 10)
#define	VBLANK_TIM64   _TIM64(_CYCLES(37))
#define	KERNAL_TIM64   _TIM64(_CYCLES(194))
#define	OVERSCAN_TIM64   _TIM64(_CYCLES(32))

Typedefs
typedef unsigned char	byte
typedef signed char	sbyte
typedef unsigned short	word

Enumerations
enum	TIAObject {   PLAYER_0 =0, PLAYER_1, MISSILE_0, MISSILE_1,   BALL }

Functions
void	kernel_1 (void)
void	kernel_2 (void)
void	kernel_3 (void)
void	kernel_4 (void)

Variables
byte	objindex

Macro Definition Documentation

_CYCLES

#define _CYCLES

(

lines

)

(((lines) * 76) - 13)

_T1024

#define _T1024

(

cycles

)

((cycles) >> 10)

_TIM64

#define _TIM64

(

cycles

)

(((cycles) >> 6) - (((cycles) & 63) < 12))

apply_hmove

#define apply_hmove

(

)

__attribute__((leaf)) asm volatile("sta $42 /* WSYNC */" "\n" "sta $6a /* HMOVE */");

BALL

#define BALL   4

COLOR_CONV

#define COLOR_CONV

(

color

)

(SW_COLOR() ? color : color & 0x0f)

do_wsync

#define do_wsync

(

)

__attribute__((leaf)) asm volatile("sta $42 /* WSYNC */");

JOY_DOWN

#define JOY_DOWN

(

plyr

)

(!(RIOT.swcha & ((plyr) ? 0x2 : ~MOVE_DOWN)))

JOY_FIRE

#define JOY_FIRE

(

plyr

)

!(((plyr) ? TIA.inpt5 : TIA.inpt4) & 0x80)

JOY_LEFT

#define JOY_LEFT

(

plyr

)

(!(RIOT.swcha & ((plyr) ? 0x4 : ~MOVE_LEFT)))

JOY_RIGHT

#define JOY_RIGHT

(

plyr

)

(!(RIOT.swcha & ((plyr) ? 0x8 : ~MOVE_RIGHT)))

JOY_UP

#define JOY_UP

(

plyr

)

(!(RIOT.swcha & ((plyr) ? 0x1 : ~MOVE_UP)))

KERNAL_TIM64

#define KERNAL_TIM64   _TIM64(_CYCLES(194))

M0

#define M0   2

M1

#define M1   3

OVERSCAN_TIM64

#define OVERSCAN_TIM64   _TIM64(_CYCLES(32))

P0

#define P0   0

P1

#define P1   1

set_horiz_pos

#define set_horiz_pos	(		objindex,
			xpos
	)		_set_horiz_pos(xpos,objindex)

SW_COLOR

#define SW_COLOR

(

)

((RIOT.swchb & BW_MASK) != 0)

SW_P0_PRO

#define SW_P0_PRO

(

)

((RIOT.swchb & P0_DIFF_MASK) != 0)

SW_P1_PRO

#define SW_P1_PRO

(

)

((RIOT.swchb & P1_DIFF_MASK) != 0)

SW_RESET

#define SW_RESET

(

)

((RIOT.swchb & RESET_MASK) == 0)

SW_SELECT

#define SW_SELECT

(

)

((RIOT.swchb & SELECT_MASK) == 0)

VBLANK_TIM64

#define VBLANK_TIM64   _TIM64(_CYCLES(37))

Typedef Documentation

byte

typedef unsigned char byte

sbyte

typedef signed char sbyte

word

typedef unsigned short word

Enumeration Type Documentation

TIAObject

enum TIAObject

Enumerator
PLAYER_0
PLAYER_1
MISSILE_0
MISSILE_1
BALL

Function Documentation

kernel_1()

void kernel_1

(

void

)

kernel_2()

void kernel_2

(

void

)

kernel_3()

void kernel_3

(

void

)

kernel_4()

void kernel_4

(

void

)

Variable Documentation

objindex

byte objindex