/*****************************************************************************/ /* */ /* _atarios.h */ /* */ /* Internal include file, do not use directly */ /* */ /* */ /* 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 __ATARIOS_H #define __ATARIOS_H /* IOCB Command Codes */ #define IOCB_OPEN 0x03 /* open */ #define IOCB_GETREC 0x05 /* get record */ #define IOCB_GETCHR 0x07 /* get character(s) */ #define IOCB_PUTREC 0x09 /* put record */ #define IOCB_PUTCHR 0x0B /* put character(s) */ #define IOCB_CLOSE 0x0C /* close */ #define IOCB_STATIS 0x0D /* status */ #define IOCB_SPECIL 0x0E /* special */ #define IOCB_DRAWLN 0x11 /* draw line */ #define IOCB_FILLIN 0x12 /* draw line with right fill */ #define IOCB_RENAME 0x20 /* rename disk file */ #define IOCB_DELETE 0x21 /* delete disk file */ #define IOCB_LOCKFL 0x23 /* lock file (set to read-only) */ #define IOCB_UNLOCK 0x24 /* unlock file */ #define IOCB_POINT 0x25 /* point sector */ #define IOCB_NOTE 0x26 /* note sector */ #define IOCB_GETFL 0x27 /* get file length */ #define IOCB_CHDIR_MYDOS 0x29 /* change directory (MyDOS) */ #define IOCB_MKDIR 0x2A /* make directory (MyDOS/SpartaDOS) */ #define IOCB_RMDIR 0x2B /* remove directory (SpartaDOS) */ #define IOCB_CHDIR_SPDOS 0x2C /* change directory (SpartaDOS) */ #define IOCB_GETCWD 0x30 /* get current directory (MyDOS/SpartaDOS) */ #define IOCB_FORMAT 0xFE /* format */ /* Device control block */ struct __dcb { unsigned char ddevic; /* device id */ unsigned char dunit; /* unit number */ unsigned char dcomnd; /* command */ unsigned char dstats; /* command type / status return */ void *dbuf; /* pointer to buffer */ unsigned char dtimlo; /* device timeout in seconds */ unsigned char dunuse; /* - unused - */ unsigned int dbyt; /* # of bytes to transfer */ union { struct { unsigned char daux1; /* 1st command auxiliary byte */ unsigned char daux2; /* 2nd command auxiliary byte */ }; unsigned int daux; /* auxiliary as word */ }; }; typedef struct __dcb dcb_t; /* I/O control block */ struct __iocb { unsigned char handler; /* handler index number (0xff free) */ unsigned char drive; /* device number (drive) */ unsigned char command; /* command */ unsigned char status; /* status of last operation */ void* buffer; /* pointer to buffer */ void* put_byte; /* pointer to device's PUT BYTE routine */ unsigned int buflen; /* length of buffer */ unsigned char aux1; /* 1st auxiliary byte */ unsigned char aux2; /* 2nd auxiliary byte */ unsigned char aux3; /* 3rd auxiliary byte */ unsigned char aux4; /* 4th auxiliary byte */ unsigned char aux5; /* 5th auxiliary byte */ unsigned char spare; /* spare byte */ }; typedef struct __iocb iocb_t; /* DOS 2.x zeropage variables */ struct __dos2x { unsigned char* zbufp; /* points to user filename */ unsigned char* zdrva; /* points to serveral buffers (mostly VTOC) */ unsigned char* zsba; /* points to sector buffer */ unsigned char errno; /* number of occurred error */ }; typedef struct __dos2x dos2x_t; /* A single device handler formed by it's routines */ struct __devhdl { void *open; /* address of OPEN routine -1 */ void *close; /* address of CLOSE routine -1 */ void *get; /* address of GET BYTE routine -1 */ void *put; /* address of PUT BYTE routine -1 */ void *status; /* address of GET STATUS routine -1 */ void *special; /* address od SPECIAL routine -1 */ unsigned char jmp_inst; /* a "JMP" byte, should be $4C */ void (*init)(void); /* init routine (JMP INIT) */ unsigned char reserved; /* unused */ }; typedef struct __devhdl devhdl_t; /* List of device handlers, as managed in HATABS */ struct __hatabs { unsigned char id; /* ATASCII code of handler e.g. 'C','D','E','K','P','S','R' */ devhdl_t* devhdl; /* Pointer to routines of device */ }; typedef struct __hatabs hatabs_t; /* Floating point register */ struct __fpreg { #ifdef OS_REV2 unsigned char fr; unsigned char frm[5]; /* 5-byte register mantissa */ #else unsigned char fr[6]; /* 6 bytes for single register */ #endif }; typedef struct __fpreg fpreg_t; enum { /* enum for access of floating point registers */ FPIDX_R0 = 0, /* (to use as index) */ FPIDX_RE = 1, FPIDX_R1 = 2, FPIDX_R2 = 3 }; /* Define a structure with atari os register offsets */ struct __os { // --- Zero-Page --- #ifdef OSA unsigned char* linzbs; // = $00/$01 LINBUG RAM (WILL BE REPLACED BY MONITOR RAM) #else unsigned char linflg; // = $00 LNBUG FLAG (0 = NOT LNBUG) unsigned char ngflag; // = $01 MEMORY STATUS (0 = FAILURE) #endif unsigned char* casini; // = $02/$03 CASSETTE INIT LOCATION unsigned char* ramlo; // = $04/$05 RAM POINTER FOR MEMORY TEST #ifdef OSA unsigned char tramsz; // = $06 FLAG FOR LEFT CARTRIDGE unsigned char tstdat; // = $07 FLAG FOR RIGHT CARTRIDGE #else unsigned char trnsmz; // = $06 TEMPORARY REGISTER FOR RAM SIZE unsigned char tstdat; // = $07 UNUSED (NOT TOUCHED DURING RESET/COLD START) #endif // Cleared upon Coldstart only unsigned char warmst; // = $08 WARM START FLAG unsigned char bootq; // = $09 SUCCESSFUL BOOT FLAG void (*dosvec)(void); // = $0A/$0B DISK SOFTWARE START VECTOR void (*dosini)(void); // = $0C/$0D DISK SOFTWARE INIT ADDRESS unsigned char* appmhi; // = $0E/$0F APPLICATIONS MEMORY HI LIMIT // Cleared upon Coldstart or Warmstart unsigned char pokmsk; // = $10 SYSTEM MASK FOR POKEY IRQ ENABLE unsigned char brkkey; // = $11 BREAK KEY FLAG unsigned char rtclok[3]; // = $12-$14 REAL TIME CLOCK (IN 16 MSEC UNITS) unsigned char* bufadr; // = $15/$16 INDIRECT BUFFER ADDRESS REGISTER unsigned char iccomt; // = $17 COMMAND FOR VECTOR unsigned char* dskfms; // = $18/$19 DISK FILE MANAGER POINTER unsigned char* dskutl; // = $1A/$1B DISK UTILITIES POINTER #ifdef OSA unsigned char ptimot; // = $1C PRINTER TIME OUT REGISTER unsigned char pbpnt; // = $1D PRINT BUFFER POINTER unsigned char pbufsz; // = $1E PRINT BUFFER SIZE unsigned char ptemp; // = $1F TEMPORARY REGISTER #else unsigned char abufpt[4]; // = $1C-$1F ACMI BUFFER POINTER AREA #endif iocb_t ziocb; // = $20-$2F ZERO PAGE I/O CONTROL BLOCK unsigned char status; // = $30 INTERNAL STATUS STORAGE unsigned char chksum; // = $31 CHECKSUM (SINGLE BYTE SUM WITH CARRY) unsigned char* bufr; // = $32/$33 POINTER TO DATA BUFFER unsigned char* bfen; // = $34/$35 NEXT BYTE PAST END OF THE DATA BUFFER LO #ifdef OSA unsigned char cretry; // = $36 NUMBER OF COMMAND FRAME RETRIES unsigned char dretry; // = $37 NUMBER OF DEVICE RETRIES #else unsigned int ltemp; // = $36/$37 LOADER TEMPORARY #endif unsigned char bufrfl; // = $38 DATA BUFFER FULL FLAG unsigned char recvdn; // = $39 RECEIVE DONE FLAG unsigned char xmtdon; // = $3A TRANSMISSION DONE FLAG unsigned char chksnt; // = $3B CHECKSUM SENT FLAG unsigned char nocksm; // = $3C NO CHECKSUM FOLLOWS DATA FLAG unsigned char bptr; // = $3D CASSETTE BUFFER POINTER unsigned char ftype; // = $3E CASSETTE IRG TYPE unsigned char feof; // = $3F CASSETTE EOF FLAG (0 // = QUIET) unsigned char freq; // = $40 CASSETTE BEEP COUNTER unsigned char soundr; // = $41 NOISY I/0 FLAG. (ZERO IS QUIET) unsigned char critic; // = $42 DEFINES CRITICAL SECTION (CRITICAL IF NON-Z) dos2x_t fmszpg; // = $43-$49 DISK FILE MANAGER SYSTEM ZERO PAGE #ifdef OSA unsigned char ckey; // = $4A FLAG SET WHEN GAME START PRESSED unsigned char cassbt; // = $4B CASSETTE BOOT FLAG #else void* zchain; // = $4A/$4B HANDLER LINKAGE CHAIN POINTER #endif unsigned char dstat; // = $4C DISPLAY STATUS unsigned char atract; // = $4D ATRACT FLAG unsigned char drkmsk; // = $4E DARK ATRACT MASK unsigned char colrsh; // = $4F ATRACT COLOR SHIFTER (EOR'ED WITH PLAYFIELD unsigned char tmpchr; // = $50 TEMPORARY CHARACTER unsigned char hold1; // = $51 TEMPORARY unsigned char lmargn; // = $52 LEFT MARGIN (NORMALLY 2, CC65 C STARTUP CODE SETS IT TO 0) unsigned char rmargn; // = $53 RIGHT MARGIN (NORMALLY 39 IF NO XEP80 IS USED) unsigned char rowcrs; // = $54 1CURSOR ROW unsigned int colcrs; // = $55/$56 CURSOR COLUMN unsigned char dindex; // = $57 DISPLAY MODE unsigned char* savmsc; // = $58/$59 SAVED MEMORY SCAN COUNTER unsigned char oldrow; // = $5A PRIOR ROW unsigned int oldcol; // = $5B/$5C PRIOR COLUMN unsigned char oldchr; // = $5D DATA UNDER CURSOR unsigned char* oldadr; // = $5E/$5F SAVED CURSOR MEMORY ADDRESS #ifdef OSA unsigned char newrow; // = $60 POINT DRAW GOES TO unsigned int newcol; // = $61/$62 COLUMN DRAW GOES TO #else unsigned char* fkdef; // = $60/$61 FUNCTION KEY DEFINITION TABLE unsigned char palnts; // = $62 PAL/NTSC INDICATOR (0 // = NTSC) #endif unsigned char logcol; // = $63 POINTS AT COLUMN IN LOGICAL LINE unsigned char* adress; // = $64/$65 TEMPORARY ADDRESS unsigned int mlttmp; // = $66/$67 TEMPORARY / FIRST BYTE IS USED IN OPEN AS TEMP unsigned int savadr; // = $68/$69 SAVED ADDRESS unsigned char ramtop; // = $6A RAM SIZE DEFINED BY POWER ON LOGIC unsigned char bufcnt; // = $6B BUFFER COUNT unsigned char* bufstr; // = $6C/$6D EDITOR GETCH POINTER unsigned char bitmsk; // = $6E BIT MASK unsigned char shfamt; // = $6F SHIFT AMOUNT FOR PIXEL JUSTIFUCATION unsigned int rowac; // = $70/$71 DRAW WORKING ROW unsigned int colac; // = $72/$73 DRAW WORKING COLUMN unsigned char* endpt; // = $74/$75 END POINT unsigned char deltar; // = $76 ROW DIFFERENCE unsigned int deltac; // = $77/$78 COLUMN DIFFERENCE #ifdef OSA unsigned char rowinc; // = $79 ROWINC unsigned char colinc; // = $7A COLINC #else unsigned char* keydef; // = $79/$7A 2-BYTE KEY DEFINITION TABLE ADDRESS #endif unsigned char swpflg; // = $7B NON-0 1F TXT AND REGULAR RAM IS SWAPPED unsigned char holdch; // = $7C CH IS MOVED HERE IN KGETCH BEFORE CNTL & SH unsigned char insdat; // = $7D 1-BYTE TEMPORARY unsigned int countr; // = $7E/$7F 2-BYTE DRAW ITERATION COUNT unsigned char _free_1[0xD4-0x7F-1]; // USER SPACE // Floating Point Package Page Zero Address Equates fpreg_t fpreg[4]; // = $D4-$EB 4 REGSITERS, ACCCESS LIKE "fpreg[FPIDX_R0].fr" unsigned char frx; // = $EC 1-BYTE TEMPORARY unsigned char eexp; // = $ED VALUE OF EXP #ifdef OS_REV2 unsigned char frsign; // = $EE ##REV2## 1-BYTE FLOATING POINT SIGN unsigned char plycnt; // = $EF ##REV2## 1-BYTE POLYNOMIAL DEGREE unsigned char sgnflg; // = $F0 ##REV2## 1-BYTE SIGN FLAG unsigned char xfmflg; // = $F1 ##REV2## 1-BYTE TRANSFORM FLAG #else unsigned char nsign; // = $EE SIGN OF # unsigned char esign; // = $EF SIGN OF EXPONENT unsigned char fchrflg; // = $F0 1ST CHAR FLAG unsigned char digrt; // = $F1 # OF DIGITS RIGHT OF DECIMAL #endif unsigned char cix; // = $F2 CURRENT INPUT INDEX unsigned char* inbuff; // = $F3/$F4 POINTS TO USER'S LINE INPUT BUFFER unsigned int ztemp1; // = $F5/$F6 2-BYTE TEMPORARY unsigned int ztemp4; // = $F7/$F8 2-BYTE TEMPORARY unsigned int ztemp3; // = $F9/$FA 2-BYTE TEMPORARY union { unsigned char degflg; // = $FB ##OLD## SAME AS RADFLG unsigned char radflg; // = $FB ##OLD## 0=RADIANS, 6=DEGREES }; fpreg_t* flptr; // = $FC/$FD 2-BYTE FLOATING POINT NUMBER POINTER fpreg_t* fptr2; // = $FE/$FF 2-BYTE FLOATING POINT NUMBER POINTER // --- Page 1 --- unsigned char stack[0x100]; // STACK // --- Page 2 --- void (*vdslst)(void); // = $0200/$0201 DISPLAY LIST NMI VECTOR void (*vprced)(void); // = $0202/$0203 PROCEED LINE IRQ VECTOR void (*vinter)(void); // = $0204/$0205 INTERRUPT LINE IRQ VECTOR void (*vbreak)(void); // = $0206/$0207 SOFTWARE BREAK (00) INSTRUCTION IRQ VECTOR void (*vkeybd)(void); // = $0208/$0209 POKEY KEYBOARD IRQ VECTOR void (*vserin)(void); // = $020A/$020B POKEY SERIAL INPUT READY IRQ void (*vseror)(void); // = $020C/$020D POKEY SERIAL OUTPUT READY IRQ void (*vseroc)(void); // = $020E/$020F POKEY SERIAL OUTPUT COMPLETE IRQ void (*vtimr1)(void); // = $0210/$0211 POKEY TIMER 1 IRQ void (*vtimr2)(void); // = $0212/$0213 POKEY TIMER 2 IRQ void (*vtimr4)(void); // = $0214/$0215 POKEY TIMER 4 IRQ void (*vimirq)(void); // = $0216/$0217 IMMEDIATE IRQ VECTOR unsigned int cdtmv1; // = $0218/$0219 COUNT DOWN TIMER 1 unsigned int cdtmv2; // = $021A/$021B COUNT DOWN TIMER 2 unsigned int cdtmv3; // = $021C/$021D COUNT DOWN TIMER 3 unsigned int cdtmv4; // = $021E/$021F COUNT DOWN TIMER 4 unsigned int cdtmv5; // = $0220/$0221 COUNT DOWN TIMER 5 void (*vvblki)(void); // = $0222/$0223 IMMEDIATE VERTICAL BLANK NMI VECTOR void (*vvblkd)(void); // = $0224/$0225 DEFERRED VERTICAL BLANK NMI VECTOR void (*cdtma1)(void); // = $0226/$0227 COUNT DOWN TIMER 1 JSR ADDRESS void (*cdtma2)(void); // = $0228/$0229 COUNT DOWN TIMER 2 JSR ADDRESS unsigned char cdtmf3; // = $022A COUNT DOWN TIMER 3 FLAG unsigned char srtimr; // = $022B SOFTWARE REPEAT TIMER unsigned char cdtmf4; // = $022C COUNT DOWN TIMER 4 FLAG unsigned char intemp; // = $022D IAN'S TEMP unsigned char cdtmf5; // = $022E COUNT DOWN TIMER FLAG 5 unsigned char sdmctl; // = $022F SAVE DMACTL REGISTER union { struct { unsigned char sdlstl; // = $0230 SAVE DISPLAY LIST LOW BYTE unsigned char sdlsth; // = $0231 SAVE DISPLAY LIST HI BYTE }; void* sdlst; // = $0230/$0231 (same as above as pointer) }; unsigned char sskctl; // = $0232 SKCTL REGISTER RAM #ifdef OSA unsigned char _spare_1; // = $0233 No OS use. #else unsigned char lcount; // = $0233 ##1200xl## 1-byte relocating loader record #endif unsigned char lpenh; // = $0234 LIGHT PEN HORIZONTAL VALUE unsigned char lpenv; // = $0235 LIGHT PEN VERTICAL VALUE void (*brkky)(void); // = $0236/$0237 BREAK KEY VECTOR #ifdef OSA unsigned char spare2[2]; // = $0238/$0239 No OS use. #else void (*vpirq)(void); // = $0238/$0239 ##rev2## 2-byte parallel device IRQ vector #endif unsigned char cdevic; // = $023A COMMAND FRAME BUFFER - DEVICE unsigned char ccomnd; // = $023B COMMAND union { struct { unsigned char caux1; // = $023C COMMAND AUX BYTE 1 unsigned char caux2; // = $023D COMMAND AUX BYTE 2 }; unsigned int caux; // = $023C/$023D (same as above as word) }; unsigned char temp; // = $023E TEMPORARY RAM CELL unsigned char errflg; // = $023F ERROR FLAG - ANY DEVICE ERROR EXCEPT TIME OUT unsigned char dflags; // = $0240 DISK FLAGS FROM SECTOR ONE unsigned char dbsect; // = $0241 NUMBER OF DISK BOOT SECTORS unsigned char* bootad; // = $0242/$0243 ADDRESS WHERE DISK BOOT LOADER WILL BE PUT unsigned char coldst; // = $0244 COLDSTART FLAG (1=IN MIDDLE OF COLDSTART> #ifdef OSA unsigned char spare3; // = $0245 No OS use. #else unsigned char reclen; // = $0245 ##1200xl## 1-byte relocating loader record length #endif unsigned char dsktim; // = $0246 DISK TIME OUT REGISTER #ifdef OSA unsigned char linbuf[40]; // = $0247-$026E ##old## CHAR LINE BUFFER #else unsigned char pdvmsk; // = $0247 ##rev2## 1-byte parallel device selection mask unsigned char shpdvs; // = $0248 ##rev2## 1-byte PDVS (parallel device select) unsigned char pdimsk; // = $0249 ##rev2## 1-byte parallel device IRQ selection unsigned int reladr; // = $024A/$024B ##rev2## 2-byte relocating loader relative adr. unsigned char pptmpa; // = $024C ##rev2## 1-byte parallel device handler temporary unsigned char pptmpx; // = $024D ##rev2## 1-byte parallel device handler temporary unsigned char _reserved_1[29]; // = $024E-$026A RESERVED unsigned char chsalt; // = $026B ##1200xl## 1-byte character set alternate unsigned char vsflag; // = $026C ##1200xl## 1-byte fine vertical scroll count unsigned char keydis; // = $026D ##1200xl## 1-byte keyboard disable unsigned char fine; // = $026E ##1200xl## 1-byte fine scrolling mode #endif unsigned char gprior; // = $026F GLOBAL PRIORITY CELL unsigned char paddl0; // = $0270 1-BYTE POTENTIOMETER 0 unsigned char paddl1; // = $0271 1-BYTE POTENTIOMETER 1 unsigned char paddl2; // = $0272 1-BYTE POTENTIOMETER 2 unsigned char paddl3; // = $0273 1-BYTE POTENTIOMETER 3 unsigned char paddl4; // = $0274 1-BYTE POTENTIOMETER 4 unsigned char paddl5; // = $0275 1-BYTE POTENTIOMETER 5 unsigned char paddl6; // = $0276 1-BYTE POTENTIOMETER 6 unsigned char paddl7; // = $0277 1-BYTE POTENTIOMETER 7 unsigned char stick0; // = $0278 1-byte joystick 0 unsigned char stick1; // = $0279 1-byte joystick 1 unsigned char stick2; // = $027A 1-byte joystick 2 unsigned char stick3; // = $027B 1-byte joystick 3 unsigned char ptrig0; // = $027C 1-BYTE PADDLE TRIGGER 0 unsigned char ptrig1; // = $027D 1-BYTE PADDLE TRIGGER 1 unsigned char ptrig2; // = $027E 1-BYTE PADDLE TRIGGER 2 unsigned char ptrig3; // = $027F 1-BYTE PADDLE TRIGGER 3 unsigned char ptrig4; // = $0280 1-BYTE PADDLE TRIGGER 4 unsigned char ptrig5; // = $0281 1-BYTE PADDLE TRIGGER 5 unsigned char ptrig6; // = $0281 1-BYTE PADDLE TRIGGER 6 unsigned char ptrig7; // = $0283 1-BYTE PADDLE TRIGGER 7 unsigned char strig0; // = $0284 1-BYTE JOYSTICK TRIGGER 0 unsigned char strig1; // = $0285 1-BYTE JOYSTICK TRIGGER 1 unsigned char strig2; // = $0286 1-BYTE JOYSTICK TRIGGER 2 unsigned char strig3; // = $0287 1-BYTE JOYSTICK TRIGGER 3 #ifdef OSA unsigned char cstat; // = $0288 ##old## cassette status register #else unsigned char hibyte; // = $0288 ##1200xl## 1-byte relocating loader high byte #endif unsigned char wmode; // = $0289 1-byte cassette WRITE mode unsigned char blim; // = $028A 1-byte cassette buffer limit #ifdef OSA unsigned char _reserved_2[5]; // = $028B-$028F RESERVED #else unsigned char imask; // = $028B ##rev2## (not used) void (*jveck)(void); // = $028C/$028D 2-byte jump vector unsigned newadr; // = $028E/028F ##1200xl## 2-byte relocating address #endif unsigned char txtrow; // = $0290 TEXT ROWCRS unsigned txtcol; // = $0291/$0292 TEXT COLCRS unsigned char tindex; // = $0293 TEXT INDEX unsigned char* txtmsc; // = $0294/$0295 FOOLS CONVRT INTO NEW MSC unsigned char txtold[6]; // = $0296-$029B OLDROW & OLDCOL FOR TEXT (AND THEN SOME) #ifdef OSA unsigned char tmpx1; // = $029C ##old## 1--byte temporary register #else unsigned char cretry; // = $029C ##1200xl## 1-byte number of command frame retries #endif unsigned char hold3; // = $029D 1-byte temporary unsigned char subtmp; // = $029E 1-byte temporary unsigned char hold2; // = $029F 1-byte (not used) unsigned char dmask; // = $02A0 1-byte display (pixel location) mask unsigned char tmplbt; // = $02A1 1-byte (not used) unsigned char escflg; // = $02A2 ESCAPE FLAG unsigned char tabmap[15]; // = $02A3-$02B1 15-byte (120 bit) tab stop bit map unsigned char logmap[4]; // = $02B2-$02B5 LOGICAL LINE START BIT MAP unsigned char invflg; // = $02B6 INVERSE VIDEO FLAG (TOGGLED BY ATARI KEY) unsigned char filflg; // = $02B7 RIGHT FILL FLAG FOR DRAW unsigned char tmprow; // = $02B8 1-byte temporary row unsigned tmpcol; // = $02B9/$02BA 2-byte temporary column unsigned char scrflg; // = $02BB SET IF SCROLL OCCURS unsigned char hold4; // = $02BC TEMP CELL USED IN DRAW ONLY #ifdef OSA unsigned char hold5; // = $02BD ##old## DITTO #else unsigned char dretry; // = $02BD ##1200xl## 1-byte number of device retries #endif unsigned char shflok; // = $02BE 1-byte shift/control lock flags unsigned char botscr; // = $02BF BOTTOM OF SCREEN 24 NORM 4 SPLIT unsigned char pcolr0; // = $02C0 1-byte player-missile 0 color/luminance unsigned char pcolr1; // = $02C1 1-byte player-missile 1 color/luminance unsigned char pcolr2; // = $02C2 1-byte player-missile 2 color/luminance unsigned char pcolr3; // = $02C3 1-byte player-missile 3 color/luminance unsigned char color0; // = $02C4 1-byte playfield 0 color/luminance unsigned char color1; // = $02C5 1-byte playfield 1 color/luminance unsigned char color2; // = $02C6 1-byte playfield 2 color/luminance unsigned char color3; // = $02C7 1-byte playfield 3 color/luminance unsigned char color4; // = $02C8 1-byte background color/luminance #ifdef OSA unsigned char _spare_2[23]; // = $02C9-$02DF No OS use. #else union { unsigned char parmbl[6]; // = $02C9 ##rev2## 6-byte relocating loader parameter struct { void (*runadr)(void); // = $02C9 ##1200xl## 2-byte run address unsigned int hiused; // = $02CB ##1200xl## 2-byte highest non-zero page address unsigned int zhiuse; // = $02CD ##1200xl## 2-byte highest zero page address }; }; union { unsigned char oldpar[6]; // = $02CF ##rev2## 6-byte relocating loader parameter struct { void (*gbytea)(void); // = $02CF ##1200xl## 2-byte GET-BYTE routine address unsigned int loadad; // = $02D1 ##1200xl## 2-byte non-zero page load address unsigned int zloada; // = $02D3 ##1200xl## 2-byte zero page load address }; }; unsigned int dsctln; // = $02D5 ##1200xl## 2-byte disk sector length unsigned int acmisr; // = $02D7 ##1200xl## 2-byte ACMI interrupt service routine unsigned char krpdel; // = $02D9 ##1200xl## 1-byte auto-repeat delay unsigned char keyrep; // = $02DA ##1200xl## 1-byte auto-repeat rate unsigned char noclik; // = $02DB ##1200xl## 1-byte key click disable unsigned char helpfg; // = $02DC ##1200xl## 1-byte HELP key flag (0 = no HELP) unsigned char dmasav; // = $02DD ##1200xl## 1-byte SDMCTL save/restore unsigned char pbpnt; // = $02DE ##1200xl## 1-byte printer buffer pointer unsigned char pbufsz; // = $02DF ##1200xl## 1-byte printer buffer size #endif union { unsigned char glbabs[4]; // = $02E0-$02E3 byte global variables for non-DOS users struct { void (*runad)(void); // = $02E0 ##map## 2-byte binary file run address void (*initad)(void); // = $02E2 ##map## 2-byte binary file initialization address }; }; unsigned char ramsiz; // = $02E4 RAM SIZE (HI BYTE ONLY) void* memtop; // = $02E5 TOP OF AVAILABLE USER MEMORY void* memlo; // = $02E7 BOTTOM OF AVAILABLE USER MEMORY #ifdef OSA unsigned char _spare_3; // = $02E9 No OS use. #else unsigned char hndlod; // = $02E9 ##1200xl## 1-byte user load flag #endif unsigned char dvstat[4]; // = $02EA-$02ED STATUS BUFFER union { unsigned int cbaud; // = $02EE/$02EF 2-byte cassette baud rate struct { unsigned char cbaudl; // = $02EE 1-byte low cassette baud rate unsigned char cbaudh; // = $02EF 1-byte high cassette baud rate }; }; unsigned char crsinh; // = $02F0 CURSOR INHIBIT (00 = CURSOR ON) unsigned char keydel; // = $02F1 KEY DELAY unsigned char ch1; // = $02F2 1-byte prior keyboard character unsigned char chact; // = $02F3 CHACTL REGISTER RAM unsigned char chbas; // = $02F4 CHBAS REGISTER RAM #ifdef OSA unsigned char _spare_4[5]; // = $02F5-$02F9 No OS use. #else unsigned char newrow; // = $02F5 ##1200xl## 1-byte draw destination row unsigned int newcol; // = $02F6/$02F7 ##1200xl## 2-byte draw destination column unsigned char rowinc; // = $02F8 ##1200xl## 1-byte draw row increment unsigned char colinc; // = $02F9 ##1200xl## 1-byte draw column increment #endif unsigned char char_; // = $02FA 1-byte internal character (naming changed due to do keyword conflict) unsigned char atachr; // = $02FB ATASCII CHARACTER unsigned char ch; // = $02FC GLOBAL VARIABLE FOR KEYBOARD unsigned char fildat; // = $02FD RIGHT FILL DATA unsigned char dspflg; // = $02FE DISPLAY FLAG DISPLAY CNTLS IF NON-ZERO unsigned char ssflag; // = $02FF START/STOP FLAG FOR PAGING (CNTL 1). CLEARE // --- Page 3 --- dcb_t dcb; // = $0300-$030B DEVICE CONTROL BLOCK unsigned int timer1; // = $030C/$030D INITIAL TIMER VALUE #ifdef OSA unsigned char addcor; // = $030E ##old## ADDITION CORRECTION #else unsigned char jmpers; // = $030E ##1200xl## 1-byte jumper options #endif unsigned char casflg; // = $030F CASSETTE MODE WHEN SET unsigned int timer2; // = $0310/$0311 2-byte final baud rate timer value unsigned char temp1; // = $0312 TEMPORARY STORAGE REGISTER #ifdef OSA unsigned char _spare_5; // = $0313 unused unsigned char temp2; // = $0314 ##old## TEMPORARY STORAGE REGISTER #else unsigned char temp2; // = $0313 ##1200xl## 1-byte temporary unsigned char ptimot; // = $0314 ##1200xl## 1-byte printer timeout #endif unsigned char temp3; // = $0315 TEMPORARY STORAGE REGISTER unsigned char savio; // = $0316 SAVE SERIAL IN DATA PORT unsigned char timflg; // = $0317 TIME OUT FLAG FOR BAUD RATE CORRECTION unsigned char stackp; // = $0318 SIO STACK POINTER SAVE CELL unsigned char tstat; // = $0319 TEMPORARY STATUS HOLDER #ifdef OSA hatabs_t hatabs[12]; // = $031A-$033D handler address table unsigned int zeropad; // = $033E/$033F zero padding #else hatabs_t hatabs[11]; // = $031A-$033A handler address table unsigned int zeropad; // = $033B/$033C zero padding unsigned char pupbt1; // = $033D ##1200xl## 1-byte power-up validation byte 1 unsigned char pupbt2; // = $033E ##1200xl## 1-byte power-up validation byte 2 unsigned char pupbt3; // = $033F ##1200xl## 1-byte power-up validation byte 3 #endif iocb_t iocb[8]; // = $0340-$03BF 8 I/O Control Blocks unsigned char prnbuf[40]; // = $03C0-$3E7 PRINTER BUFFER #ifdef OSA unsigned char _spare_6[151]; // = $03E8-$047F unused #else unsigned char superf; // = $03E8 ##1200xl## 1-byte editor super function flag unsigned char ckey; // = $03E9 ##1200xl## 1-byte cassette boot request flag unsigned char cassbt; // = $03EA ##1200xl## 1-byte cassette boot flag unsigned char cartck; // = $03EB ##1200xl## 1-byte cartridge equivalence check unsigned char derrf; // = $03EC ##rev2## 1-byte screen OPEN error flag unsigned char acmvar[11]; // = $03ED-$03F7 ##1200xl## reserved for ACMI, not cleared upon reset unsigned char basicf; // = $03F8 ##rev2## 1-byte BASIC switch flag unsigned char mintlk; // = $03F9 ##1200xl## 1-byte ACMI module interlock unsigned char gintlk; // = $03FA ##1200xl## 1-byte cartridge interlock void* chlink; // = $03FB/$03FC ##1200xl## 2-byte loaded handler chain link unsigned char casbuf[131]; // = $03FD-$047F CASSETTE BUFFER #endif // --- Page 4 --- unsigned char usarea[128]; // = $0480 128 bytes reserved for application // --- Page 5 --- unsigned char _spare_7[126]; // = $0500-$057D reserved for FP package / unused unsigned char lbpr1; // = $057E LBUFF PREFIX 1 unsigned char lbpr2; // = $057F LBUFF PREFIX 2 unsigned char lbuff[128]; // = $0580-$05FF 128-byte line buffer }; /* Define a structure with the zero page atari basic register offsets */ struct __basic { void* lowmem; // = $80/$81 POINTER TO BASIC'S LOW MEMORY void* vntp; // = $82/$83 BEGINNING ADDRESS OF THE VARIABLE NAME TABLE void* vntd; // = $84/$85 POINTER TO THE ENDING ADDRESS OF THE VARIABLE NAME TABLE PLUS ONE void* vvtp; // = $86/$87 ADDRESS FOR THE VARIABLE VALUE TABLE void* stmtab; // = $88/$89 ADDRESS OF THE STATEMENT TABLE void* stmcur; // = $8A/$8B CURRENT BASIC STATEMENT POINTER void* starp; // = $8C/$8D ADDRESS FOR THE STRING AND ARRAY TABLE void* runstk; // = $8E/$8F ADDRESS OF THE RUNTIME STACK void* memtop; // = $90/$91 POINTER TO THE TOP OF BASIC MEMORY unsigned char _internal_1[0xBA-0x91-1]; // INTERNAL DATA unsigned int stopln; // = $BA/$BB LINE WHERE A PROGRAM WAS STOPPED unsigned char _internal_2[0xC3-0xBB-1]; // INTERNAL DATA unsigned char errsav; // = $C3 NUMBER OF THE ERROR CODE unsigned char _internal_3[0xC9-0xC3-1]; // INTERNAL DATA unsigned char ptabw; // = $C9 NUMBER OF COLUMNS BETWEEN TAB STOPS unsigned char loadflg; // = $CA LIST PROTECTION unsigned char _internal_4[0xD4-0xCA-1]; // INTERNAL DATA unsigned int binint; // = $D4/$D5 USR-CALL RETURN VALUE }; #endif