/* Define a structure with the gtia register offsets */
struct __gtia_write {
- unsigned char hposp0; /* horizontal position player 0 */
- unsigned char hposp1; /* horizontal position player 1 */
- unsigned char hposp2; /* horizontal position player 2 */
- unsigned char hposp3; /* horizontal position player 3 */
- unsigned char hposm0; /* horizontal position missile 0 */
- unsigned char hposm1; /* horizontal position missile 1 */
- unsigned char hposm2; /* horizontal position missile 2 */
- unsigned char hposm3; /* horizontal position missile 3 */
- unsigned char sizep0; /* size of player 0 */
- unsigned char sizep1; /* size of player 1 */
- unsigned char sizep2; /* size of player 2 */
- unsigned char sizep3; /* size of player 3 */
- unsigned char sizem; /* size of missiles */
- unsigned char grafp0; /* graphics shape player 0 */
- unsigned char grafp1; /* graphics shape player 1 */
- unsigned char grafp2; /* graphics shape player 2 */
- unsigned char grafp3; /* graphics shape player 3 */
- unsigned char grafm; /* graphics shape missiles */
- unsigned char colpm0; /* color player and missile 0 */
- unsigned char colpm1; /* color player and missile 1 */
- unsigned char colpm2; /* color player and missile 2 */
- unsigned char colpm3; /* color player and missile 3 */
- unsigned char colpf0; /* color playfield 0 */
- unsigned char colpf1; /* color playfield 1 */
- unsigned char colpf2; /* color playfield 2 */
- unsigned char colpf3; /* color playfield 3 */
- unsigned char colbk; /* color background */
- unsigned char prior; /* priority selection */
- unsigned char vdelay; /* vertical delay */
- unsigned char gractl; /* stick/paddle latch, p/m control */
- unsigned char hitclr; /* clear p/m collision */
- unsigned char consol; /* console buttons */
+ unsigned char hposp0; /* 0x00: horizontal position player 0 */
+ unsigned char hposp1; /* 0x01: horizontal position player 1 */
+ unsigned char hposp2; /* 0x02: horizontal position player 2 */
+ unsigned char hposp3; /* 0x03: horizontal position player 3 */
+ unsigned char hposm0; /* 0x04: horizontal position missile 0 */
+ unsigned char hposm1; /* 0x05: horizontal position missile 1 */
+ unsigned char hposm2; /* 0x06: horizontal position missile 2 */
+ unsigned char hposm3; /* 0x07: horizontal position missile 3 */
+ unsigned char sizep0; /* 0x08: size of player 0 */
+ unsigned char sizep1; /* 0x09: size of player 1 */
+ unsigned char sizep2; /* 0x0A: size of player 2 */
+ unsigned char sizep3; /* 0x0B: size of player 3 */
+ unsigned char sizem; /* 0x0C: size of missiles */
+ unsigned char grafp0; /* 0x0D: graphics shape player 0 */
+ unsigned char grafp1; /* 0x0E: graphics shape player 1 */
+ unsigned char grafp2; /* 0x0F: graphics shape player 2 */
+ unsigned char grafp3; /* 0x10: graphics shape player 3 */
+ unsigned char grafm; /* 0x11: graphics shape missiles */
+ unsigned char colpm0; /* 0x12: color player and missile 0 */
+ unsigned char colpm1; /* 0x13: color player and missile 1 */
+ unsigned char colpm2; /* 0x14: color player and missile 2 */
+ unsigned char colpm3; /* 0x15: color player and missile 3 */
+ unsigned char colpf0; /* 0x16: color playfield 0 */
+ unsigned char colpf1; /* 0x17: color playfield 1 */
+ unsigned char colpf2; /* 0x18: color playfield 2 */
+ unsigned char colpf3; /* 0x19: color playfield 3 */
+ unsigned char colbk; /* 0x1A: color background */
+ unsigned char prior; /* 0x1B: priority selection */
+ unsigned char vdelay; /* 0x1C: vertical delay */
+ unsigned char gractl; /* 0x1D: stick/paddle latch, p/m control */
+ unsigned char hitclr; /* 0x1E: clear p/m collision */
+ unsigned char consol; /* 0x1F: builtin speaker */
};
/* Define a structure with the gtia register offsets */
struct __gtia_read {
- unsigned char m0pf; /* missile 0 to playfield collision */
- unsigned char m1pf; /* missile 1 to playfield collision */
- unsigned char m2pf; /* missile 2 to playfield collision */
- unsigned char m3pf; /* missile 3 to playfield collision */
- unsigned char p0pf; /* player 0 to playfield collision */
- unsigned char p1pf; /* player 1 to playfield collision */
- unsigned char p2pf; /* player 2 to playfield collision */
- unsigned char p3pf; /* player 3 to playfield collision */
- unsigned char m0pl; /* missile 0 to player collision */
- unsigned char m1pl; /* missile 1 to player collision */
- unsigned char m2pl; /* missile 2 to player collision */
- unsigned char m3pl; /* missile 3 to player collision */
- unsigned char p0pl; /* player 0 to player collision */
- unsigned char p1pl; /* player 1 to player collision */
- unsigned char p2pl; /* player 2 to player collision */
- unsigned char p3pl; /* player 3 to player collision */
- unsigned char trig0; /* joystick trigger 0 */
- unsigned char trig1; /* joystick trigger 1 */
- unsigned char trig2; /* joystick trigger 2 */
- unsigned char trig3; /* joystick trigger 3 */
- unsigned char pal; /* pal/ntsc flag */
+ unsigned char m0pf; /* 0x00: missile 0 to playfield collision */
+ unsigned char m1pf; /* 0x01: missile 1 to playfield collision */
+ unsigned char m2pf; /* 0x02: missile 2 to playfield collision */
+ unsigned char m3pf; /* 0x03: missile 3 to playfield collision */
+ unsigned char p0pf; /* 0x04: player 0 to playfield collision */
+ unsigned char p1pf; /* 0x05: player 1 to playfield collision */
+ unsigned char p2pf; /* 0x06: player 2 to playfield collision */
+ unsigned char p3pf; /* 0x07: player 3 to playfield collision */
+ unsigned char m0pl; /* 0x08: missile 0 to player collision */
+ unsigned char m1pl; /* 0x09: missile 1 to player collision */
+ unsigned char m2pl; /* 0x0A: missile 2 to player collision */
+ unsigned char m3pl; /* 0x0B: missile 3 to player collision */
+ unsigned char p0pl; /* 0x0C: player 0 to player collision */
+ unsigned char p1pl; /* 0x0D: player 1 to player collision */
+ unsigned char p2pl; /* 0x0E: player 2 to player collision */
+ unsigned char p3pl; /* 0x0F: player 3 to player collision */
+ unsigned char trig0; /* 0x10: joystick trigger 0 */
+ unsigned char trig1; /* 0x11: joystick trigger 1 */
+ unsigned char trig2; /* 0x12: joystick trigger 2 */
+ unsigned char trig3; /* 0x13: joystick trigger 3 */
+ unsigned char pal; /* 0x14: pal/ntsc flag */
+ unsigned char unused[10];
+ unsigned char consol; /* 0x1F: console buttons */
};
/* End of _gtia.h */
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