/*****************************************************************************/ /* */ /* _suzy.h */ /* */ /* Atari Lynx, Suzy chip register hardware structures */ /* */ /* */ /* This software is provided 'as-is', without any expressed or implied */ /* warranty. In no event will the authors be held liable for any damages */ /* arising from the use of this software. */ /* */ /* Permission is granted to anyone to use this software for any purpose, */ /* including commercial applications, and to alter it and redistribute it */ /* freely, subject to the following restrictions: */ /* */ /* 1. The origin of this software must not be misrepresented; you must not */ /* claim that you wrote the original software. If you use this software */ /* in a product, an acknowledgment in the product documentation would be */ /* appreciated but is not required. */ /* 2. Altered source versions must be plainly marked as such, and must not */ /* be misrepresented as being the original software. */ /* 3. This notice may not be removed or altered from any source */ /* distribution. */ /* */ /*****************************************************************************/ #ifndef __SUZY_H #define __SUZY_H /* JOYSTICK bit definitions */ enum { JOYPAD_RIGHT = 0x10, JOYPAD_LEFT = 0x20, JOYPAD_DOWN = 0x40, JOYPAD_UP = 0x80, BUTTON_OPTION1 = 0x08, BUTTON_OPTION2 = 0x04, BUTTON_INNER = 0x02, BUTTON_OUTER = 0x01 }; /* SWITCHES bit definitions */ enum { CART1_IO_INACTIVE = 0x04, CART0_IO_INACTIVE = 0x02, BUTTON_PAUSE = 0x01 }; /* SPRCTL0 bit definitions */ enum { BPP_4 = 0xC0, BPP_3 = 0x80, BPP_2 = 0x40, BPP_1 = 0x00, HFLIP = 0x20, VFLIP = 0x10, TYPE_SHADOW = 0x07, TYPE_XOR = 0x06, TYPE_NONCOLL = 0x05, TYPE_NORMAL = 0x04, TYPE_BOUNDARY = 0x03, TYPE_BSHADOW = 0x02, TYPE_BACKNONCOLL = 0x01, TYPE_BACKGROUND = 0x00 }; /* SPRCTL1 bit definitions */ enum { LITERAL = 0x80, PACKED = 0x00, ALGO3 = 0x40, RENONE = 0x00, REHV = 0x10, REHVS = 0x20, REHVST = 0x30, REUSEPAL = 0x08, SKIP = 0x04, DRAWUP = 0x02, DRAWLEFT = 0x01 }; /* Sprite control block (SCB) definitions */ /* SCB with all attributes */ typedef struct SCB_REHVST_PAL { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; unsigned int stretch; unsigned int tilt; unsigned char penpal[8]; } SCB_REHVST_PAL; /* SCB without pallette */ typedef struct SCB_REHVST { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; unsigned int stretch; unsigned int tilt; } SCB_REHVST; /* SCB without stretch/tilt */ typedef struct SCB_REHV { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; } SCB_REHV; /* SCB without stretch/tilt, with penpal */ typedef struct SCB_REHV_PAL { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; unsigned char penpal[8]; } SCB_REHV_PAL; /* SCB without tilt/penpal */ typedef struct SCB_REHVS { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; unsigned int stretch; } SCB_REHVS; /* SCB without tilt, with penpal */ typedef struct SCB_REHVS_PAL { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned int hsize; unsigned int vsize; unsigned int stretch; unsigned char penpal[8]; } SCB_REHVS_PAL; /* SCB without size/stretch/tilt/penpal */ typedef struct SCB_RENONE { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; } SCB_RENONE; /* SCB without size/str/tilt, with penpal */ typedef struct SCB_RENONE_PAL { unsigned char sprctl0; unsigned char sprctl1; unsigned char sprcoll; char *next; unsigned char *data; signed int hpos; signed int vpos; unsigned char penpal[8]; } SCB_RENONE_PAL; typedef struct PENPAL_4 { unsigned char penpal[8]; } PENPAL_4; typedef struct PENPAL_3 { unsigned char penpal[4]; } PENPAL_3; typedef struct PENPAL_2 { unsigned char penpal[2]; } PENPAL_2; typedef struct PENPAL_1 { unsigned char penpal[1]; } PENPAL_1; /* SPRGO bit definitions */ enum { SPRITE_GO = 0x01, // sprite process start bit EVER_ON = 0x04 // everon detector enable }; /* SPRSYS bit definitions for write operations */ enum { SIGNMATH = 0x80, // signed math ACCUMULATE = 0x40, // accumulate multiplication results NO_COLLIDE = 0x20, // do not collide with any sprites (also SPRCOLL bit definition) VSTRETCH = 0x10, // stretch v LEFTHAND = 0x08, CLR_UNSAFE = 0x04, // unsafe access reset SPRITESTOP = 0x02 // request to stop sprite process }; /* SPRSYS bit definitions for read operations */ enum { MATHWORKING = 0x80, // math operation in progress MATHWARNING = 0x40, // accumulator overflow on multiple or divide by zero MATHCARRY = 0x20, // last carry bit VSTRETCHING = 0x10, LEFTHANDED = 0x08, UNSAFE_ACCESS = 0x04, // unsafe access performed SPRITETOSTOP = 0x02, // requested to stop SPRITEWORKING = 0x01 // sprite process is active }; /* Suzy hardware registers */ struct __suzy { unsigned char *tmpadr; // 0xFC00 Temporary address unsigned int tiltacc; // 0xFC02 Tilt accumulator unsigned int hoff; // 0xFC04 Offset to H edge of screen unsigned int voff; // 0xFC06 Offset to V edge of screen unsigned char *sprbase; // 0xFC08 Base address of sprite unsigned char *colbase; // 0xFC0A Base address of collision buffer unsigned char *vidadr; // 0xFC0C Current vid buffer address unsigned char *coladr; // 0xFC0E Current col buffer address unsigned char *scbnext; // 0xFC10 Address of next SCB unsigned char *sprdline; // 0xFC12 start of sprite data line address unsigned int hposstrt; // 0xFC14 start hpos unsigned int vposstrt; // 0xFC16 start vpos unsigned int sprhsize; // 0xFC18 sprite h size unsigned int sprvsize; // 0xFC1A sprite v size unsigned int stretchl; // 0xFC1C H size adder unsigned int tilt; // 0xFC1E H pos adder unsigned int sprdoff; // 0xFC20 offset to next sprite data line unsigned int sprvpos; // 0xFC22 current vpos unsigned int colloff; // 0xFC24 offset to collision depository unsigned int vsizeacc; // 0xFC26 vertical size accumulator unsigned int hsizeoff; // 0xFC28 horizontal size offset unsigned int vsizeoff; // 0xFC2A vertical size offset unsigned char *scbaddr; // 0xFC2C address of current SCB unsigned char *procaddr; // 0xFC2E address of current spr data proc unsigned char unused0[32]; // 0xFC30 - 0xFC4F reserved/unused unsigned char unused1[2]; // 0xFC50 - 0xFC51 do not use unsigned char mathd; // 0xFC52 unsigned char mathc; // 0xFC53 unsigned char mathb; // 0xFC54 unsigned char matha; // 0xFC55 write starts a multiply operation unsigned char mathp; // 0xFC56 unsigned char mathn; // 0xFC57 unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use unsigned char mathh; // 0xFC60 unsigned char mathg; // 0xFC61 unsigned char mathf; // 0xFC62 unsigned char mathe; // 0xFC63 write starts a divide operation unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use unsigned char mathm; // 0xFC6C unsigned char mathl; // 0xFC6D unsigned char mathk; // 0xFC6E unsigned char mathj; // 0xFC6F unsigned char unused4[16]; // 0xFC70 - 0xFC7F do not use unsigned char sprctl0; // 0xFC80 sprite control bits 0 unsigned char sprctl1; // 0xFC81 sprite control bits 1 unsigned char sprcoll; // 0xFC82 sprite collision number unsigned char sprinit; // 0xFC83 sprite initialization bits unsigned char unused5[4]; // 0xFC84 - 0xFC87 unused unsigned char suzyhrev; // 0xFC88 suzy hardware rev unsigned char suzysrev; // 0xFC89 suzy software rev unsigned char unused6[6]; // 0xFC8A - 0xFC8F unused unsigned char suzybusen; // 0xFC90 suzy bus enable unsigned char sprgo; // 0xFC91 sprite process start bit unsigned char sprsys; // 0xFC92 sprite system control bits unsigned char unused7[29]; // 0xFC93 - 0xFCAF unused unsigned char joystick; // 0xFCB0 joystick and buttons unsigned char switches; // 0xFCB1 other switches unsigned char cart0; // 0xFCB2 cart0 r/w unsigned char cart1; // 0xFCB3 cart1 r/w unsigned char unused8[8]; // 0xFCB4 - 0xFCBF unused unsigned char leds; // 0xFCC0 leds unsigned char unused9; // 0xFCC1 unused unsigned char parstat; // 0xFCC2 parallel port status unsigned char pardata; // 0xFCC3 parallel port data unsigned char howie; // 0xFCC4 howie (?) // 0xFCC5 - 0xFCFF unused }; /* Hardware math registers */ #define FACTOR_A *(unsigned int *) 0xFC54 #define FACTOR_B *(unsigned int *) 0xFC52 #define PRODUCT0 *(unsigned int *) 0xFC60 #define PRODUCT1 *(unsigned int *) 0xFC62 #define PRODUCT *(long *) 0xFC60 #define DIVIDEND0 *(unsigned int *) 0xFC60 #define DIVIDEND1 *(unsigned int *) 0xFC62 #define DIVIDEND *(long *) 0xFC60 #define DIVISOR *(unsigned int *) 0xFC56 #define QUOTIENT0 *(unsigned int *) 0xFC52 #define QUOTIENT1 *(unsigned int *) 0xFC54 #define QUOTIENT *(long *) 0xFC52 #define REMAINDER0 *(unsigned int *) 0xFC6C #define REMAINDER1 *(unsigned int *) 0xFC6E #define REMAINDER *(long *) 0xFC6C /* Deprecated definitions */ /* MAPCTL $FFF9 */ #define HIGHSPEED 0x80 #define VECTORSPACE 0x08 #define ROMSPACE 0x04 #define MIKEYSPACE 0x02 #define SUZYSPACE 0x01 #endif