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- {
- This file is part of the Free Pascal run time library.
-
- A file in Amiga system run time library.
- Copyright (c) 1998-2000 by Nils Sjoholm
- member of the Amiga RTL development team.
-
- See the file COPYING.FPC, included in this distribution,
- for details about the copyright.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
- **********************************************************************}
-
- {
- registers and bits in the Complex Interface Adapter (CIA) chip
- }
-
- unit hardware;
-
- INTERFACE
- uses exec;
-
- {
- * ciaa is on an ODD Pointer (e.g. the low Byte) -- $bfe001
- * ciab is on an EVEN Pointer (e.g. the high Byte) -- $bfd000
- *
- * do this to get the definitions:
- * extern struct CIA ciaa, ciab;
- }
-
- Type
-
- pCIA = ^tCIA;
- tCIA = record
- ciapra : Byte;
- pad0 : Array [0..254] of Byte;
- ciaprb : Byte;
- pad1 : Array [0..254] of Byte;
- ciaddra : Byte;
- pad2 : Array [0..254] of Byte;
- ciaddrb : Byte;
- pad3 : Array [0..254] of Byte;
- ciatalo : Byte;
- pad4 : Array [0..254] of Byte;
- ciatahi : Byte;
- pad5 : Array [0..254] of Byte;
- ciatblo : Byte;
- pad6 : Array [0..254] of Byte;
- ciatbhi : Byte;
- pad7 : Array [0..254] of Byte;
- ciatodlow : Byte;
- pad8 : Array [0..254] of Byte;
- ciatodmid : Byte;
- pad9 : Array [0..254] of Byte;
- ciatodhi : Byte;
- pad10 : Array [0..254] of Byte;
- unusedreg : Byte;
- pad11 : Array [0..254] of Byte;
- ciasdr : Byte;
- pad12 : Array [0..254] of Byte;
- ciaicr : Byte;
- pad13 : Array [0..254] of Byte;
- ciacra : Byte;
- pad14 : Array [0..254] of Byte;
- ciacrb : Byte;
- end;
-
-
- Const
-
- { interrupt control register bit numbers }
-
- CIAICRB_TA = 0;
- CIAICRB_TB = 1;
- CIAICRB_ALRM = 2;
- CIAICRB_SP = 3;
- CIAICRB_FLG = 4;
- CIAICRB_IR = 7;
- CIAICRB_SETCLR = 7;
-
- { control register A bit numbers }
-
- CIACRAB_START = 0;
- CIACRAB_PBON = 1;
- CIACRAB_OUTMODE = 2;
- CIACRAB_RUNMODE = 3;
- CIACRAB_LOAD = 4;
- CIACRAB_INMODE = 5;
- CIACRAB_SPMODE = 6;
- CIACRAB_TODIN = 7;
-
- { control register B bit numbers }
-
- CIACRBB_START = 0;
- CIACRBB_PBON = 1;
- CIACRBB_OUTMODE = 2;
- CIACRBB_RUNMODE = 3;
- CIACRBB_LOAD = 4;
- CIACRBB_INMODE0 = 5;
- CIACRBB_INMODE1 = 6;
- CIACRBB_ALARM = 7;
-
- { interrupt control register masks }
-
- CIAICRF_TA = $01;
- CIAICRF_TB = $02;
- CIAICRF_ALRM = $04;
- CIAICRF_SP = $08;
- CIAICRF_FLG = $10;
- CIAICRF_IR = $80;
- CIAICRF_SETCLR = $80;
-
- { control register A register masks }
-
- CIACRAF_START = $01;
- CIACRAF_PBON = $02;
- CIACRAF_OUTMODE = $04;
- CIACRAF_RUNMODE = $08;
- CIACRAF_LOAD = $10;
- CIACRAF_INMODE = $20;
- CIACRAF_SPMODE = $40;
- CIACRAF_TODIN = $80;
-
- { control register B register masks }
-
- CIACRBF_START = $01;
- CIACRBF_PBON = $02;
- CIACRBF_OUTMODE = $04;
- CIACRBF_RUNMODE = $08;
- CIACRBF_LOAD = $10;
- CIACRBF_INMODE0 = $20;
- CIACRBF_INMODE1 = $40;
- CIACRBF_ALARM = $80;
-
- { control register B INMODE masks }
-
- CIACRBF_IN_PHI2 = 0;
- CIACRBF_IN_CNT = CIACRBF_INMODE0;
- CIACRBF_IN_TA = CIACRBF_INMODE1;
- CIACRBF_IN_CNT_TA = CIACRBF_INMODE0 + CIACRBF_INMODE1;
-
- {
- * Port definitions -- what each bit in a cia peripheral register is tied to
- }
-
- { ciaa port A (0xbfe001) }
-
- CIAB_GAMEPORT1 = 7; { gameport 1, pin 6 (fire button*) }
- CIAB_GAMEPORT0 = 6; { gameport 0, pin 6 (fire button*) }
- CIAB_DSKRDY = 5; { disk ready* }
- CIAB_DSKTRACK0 = 4; { disk on track 00* }
- CIAB_DSKPROT = 3; { disk write protect* }
- CIAB_DSKCHANGE = 2; { disk change* }
- CIAB_LED = 1; { led light control (0==>bright) }
- CIAB_OVERLAY = 0; { memory overlay bit }
-
- { ciaa port B (0xbfe101) -- parallel port }
-
- { ciab port A (0xbfd000) -- serial and printer control }
-
- CIAB_COMDTR = 7; { serial Data Terminal Ready* }
- CIAB_COMRTS = 6; { serial Request to Send* }
- CIAB_COMCD = 5; { serial Carrier Detect* }
- CIAB_COMCTS = 4; { serial Clear to Send* }
- CIAB_COMDSR = 3; { serial Data Set Ready* }
- CIAB_PRTRSEL = 2; { printer SELECT }
- CIAB_PRTRPOUT = 1; { printer paper out }
- CIAB_PRTRBUSY = 0; { printer busy }
-
- { ciab port B (0xbfd100) -- disk control }
-
- CIAB_DSKMOTOR = 7; { disk motorr* }
- CIAB_DSKSEL3 = 6; { disk select unit 3* }
- CIAB_DSKSEL2 = 5; { disk select unit 2* }
- CIAB_DSKSEL1 = 4; { disk select unit 1* }
- CIAB_DSKSEL0 = 3; { disk select unit 0* }
- CIAB_DSKSIDE = 2; { disk side select* }
- CIAB_DSKDIREC = 1; { disk direction of seek* }
- CIAB_DSKSTEP = 0; { disk step heads* }
-
- { ciaa port A (0xbfe001) }
-
- CIAF_GAMEPORT1 = 128;
- CIAF_GAMEPORT0 = 64;
- CIAF_DSKRDY = 32;
- CIAF_DSKTRACK0 = 16;
- CIAF_DSKPROT = 8;
- CIAF_DSKCHANGE = 4;
- CIAF_LED = 2;
- CIAF_OVERLAY = 1;
-
- { ciaa port B (0xbfe101) -- parallel port }
-
- { ciab port A (0xbfd000) -- serial and printer control }
-
- CIAF_COMDTR = 128;
- CIAF_COMRTS = 64;
- CIAF_COMCD = 32;
- CIAF_COMCTS = 16;
- CIAF_COMDSR = 8;
- CIAF_PRTRSEL = 4;
- CIAF_PRTRPOUT = 2;
- CIAF_PRTRBUSY = 1;
-
- { ciab port B (0xbfd100) -- disk control }
-
- CIAF_DSKMOTOR = 128;
- CIAF_DSKSEL3 = 64;
- CIAF_DSKSEL2 = 32;
- CIAF_DSKSEL1 = 16;
- CIAF_DSKSEL0 = 8;
- CIAF_DSKSIDE = 4;
- CIAF_DSKDIREC = 2;
- CIAF_DSKSTEP = 1;
-
-
- Type
-
- pAudChannel = ^tAudChannel;
- tAudChannel = record
- ac_ptr : Pointer; { ptr to start of waveform data }
- ac_len : Word; { length of waveform in words }
- ac_per : Word; { sample period }
- ac_vol : Word; { volume }
- ac_dat : Word; { sample pair }
- ac_pad : Array [0..1] of Word; { unused }
- end;
-
- pSpriteDef = ^tSpriteDef;
- tSpriteDef = record
- pos : Word;
- ctl : Word;
- dataa : Word;
- datab : Word;
- end;
-
- pCustom = ^tCustom;
- tCustom = record
- bltddat : Word;
- dmaconr : Word;
- vposr : Word;
- vhposr : Word;
- dskdatr : Word;
- joy0dat : Word;
- joy1dat : Word;
- clxdat : Word;
- adkconr : Word;
- pot0dat : Word;
- pot1dat : Word;
- potinp : Word;
- serdatr : Word;
- dskbytr : Word;
- intenar : Word;
- intreqr : Word;
- dskpt : Pointer;
- dsklen : Word;
- dskdat : Word;
- refptr : Word;
- vposw : Word;
- vhposw : Word;
- copcon : Word;
- serdat : Word;
- serper : Word;
- potgo : Word;
- joytest : Word;
- strequ : Word;
- strvbl : Word;
- strhor : Word;
- strlong : Word;
- bltcon0 : Word;
- bltcon1 : Word;
- bltafwm : Word;
- bltalwm : Word;
- bltcpt : Pointer;
- bltbpt : Pointer;
- bltapt : Pointer;
- bltdpt : Pointer;
- bltsize : Word;
- pad2d : Byte;
- bltcon0l : Byte;
- bltsizv : Word;
- bltsizh : Word;
- bltcmod : Word;
- bltbmod : Word;
- bltamod : Word;
- bltdmod : Word;
- pad34 : Array [0..3] of Word;
- bltcdat : Word;
- bltbdat : Word;
- bltadat : Word;
- pad3b : Array [0..2] of Word;
- deniseid : Word;
- dsksync : Word;
- cop1lc : Longint;
- cop2lc : Longint;
- copjmp1 : Word;
- copjmp2 : Word;
- copins : Word;
- diwstrt : Word;
- diwstop : Word;
- ddfstrt : Word;
- ddfstop : Word;
- dmacon : Word;
- clxcon : Word;
- intena : Word;
- intreq : Word;
- adkcon : Word;
- aud : Array [0..3] of tAudChannel;
- bplpt : Array [0..7] of Pointer;
- bplcon0 : Word;
- bplcon1 : Word;
- bplcon2 : Word;
- bplcon3 : Word;
- bpl1mod : Word;
- bpl2mod : Word;
- bplcon4 : Word;
- clxcon2 : Word;
- bpldat : Array [0..7] of Word;
- sprpt : Array [0..7] of Pointer;
- spr : Array [0..7] of tSpriteDef;
- color : Array [0..31] of Word;
- htotal : Word;
- hsstop : Word;
- hbstrt : Word;
- hbstop : Word;
- vtotal : Word;
- vsstop : Word;
- vbstrt : Word;
- vbstop : Word;
- sprhstrt : Word;
- sprhstop : Word;
- bplhstrt : Word;
- bplhstop : Word;
- hhposw : Word;
- hhposr : Word;
- beamcon0 : Word;
- hsstrt : Word;
- vsstrt : Word;
- hcenter : Word;
- diwhigh : Word;
- padf3 : Array [0..10] of Word;
- fmode : Word;
- end;
-
- CONST
- { defines for beamcon register }
- VARVBLANK = $1000; { Variable vertical blank enable }
- LOLDIS = $0800; { long line disable }
- CSCBLANKEN = $0400; { redirect composite sync }
- VARVSYNC = $0200; { Variable vertical sync enable }
- VARHSYNC = $0100; { Variable horizontal sync enable }
- VARBEAM = $0080; { variable beam counter enable }
- DISPLAYDUAL = $0040; { use UHRES pointer AND standard pointers }
- DISPLAYPAL = $0020; { set decodes to generate PAL display }
- VARCSYNC = $0010; { Variable composite sync enable }
- CSBLANK = $0008; { Composite blank out to CSY* pin }
- CSYNCTRUE = $0004; { composite sync TRUE signal }
- VSYNCTRUE = $0002; { vertical sync TRUE }
- HSYNCTRUE = $0001; { horizontal sync TRUE }
-
- { new defines for bplcon0 }
- USE_BPLCON3 = 1;
-
- { new defines for bplcon2 }
- BPLCON2_ZDCTEN = 1024; { colormapped genlock bit }
- BPLCON2_ZDBPEN = 2048; { use bitplane as genlock bits }
- BPLCON2_ZDBPSEL0 = 4096; { three bits to select one }
- BPLCON2_ZDBPSEL1 = 8192; { of 8 bitplanes in }
- BPLCON2_ZDBPSEL2 = 16384; { ZDBPEN genlock mode }
-
- { defines for bplcon3 register }
- BPLCON3_EXTBLNKEN = 1; { external blank enable }
- BPLCON3_EXTBLKZD = 2; { external blank ored into trnsprncy }
- BPLCON3_ZDCLKEN = 4; { zd pin outputs a 14mhz clock}
- BPLCON3_BRDNTRAN = 16; { border is opaque }
- BPLCON3_BRDNBLNK = 32; { border is opaque }
-
-
- Const
-
- ADKB_SETCLR = 15; { standard set/clear bit }
- ADKB_PRECOMP1 = 14; { two bits of precompensation }
- ADKB_PRECOMP0 = 13;
- ADKB_MFMPREC = 12; { use mfm style precompensation }
- ADKB_UARTBRK = 11; { force uart output to zero }
- ADKB_WORDSYNC = 10; { enable DSKSYNC register matching }
- ADKB_MSBSYNC = 9; { (Apple GCR Only) sync on MSB for reading }
- ADKB_FAST = 8; { 1 -> 2 us/bit (mfm), 2 -> 4 us/bit (gcr) }
- ADKB_USE3PN = 7; { use aud chan 3 to modulate period of ?? }
- ADKB_USE2P3 = 6; { use aud chan 2 to modulate period of 3 }
- ADKB_USE1P2 = 5; { use aud chan 1 to modulate period of 2 }
- ADKB_USE0P1 = 4; { use aud chan 0 to modulate period of 1 }
- ADKB_USE3VN = 3; { use aud chan 3 to modulate volume of ?? }
- ADKB_USE2V3 = 2; { use aud chan 2 to modulate volume of 3 }
- ADKB_USE1V2 = 1; { use aud chan 1 to modulate volume of 2 }
- ADKB_USE0V1 = 0; { use aud chan 0 to modulate volume of 1 }
-
- ADKF_SETCLR = $8000;
- ADKF_PRECOMP1 = $4000;
- ADKF_PRECOMP0 = $2000;
- ADKF_MFMPREC = $1000;
- ADKF_UARTBRK = $0800;
- ADKF_WORDSYNC = $0400;
- ADKF_MSBSYNC = $0200;
- ADKF_FAST = $0100;
- ADKF_USE3PN = $0080;
- ADKF_USE2P3 = $0040;
- ADKF_USE1P2 = $0020;
- ADKF_USE0P1 = $0010;
- ADKF_USE3VN = $0008;
- ADKF_USE2V3 = $0004;
- ADKF_USE1V2 = $0002;
- ADKF_USE0V1 = $0001;
-
- ADKF_PRE000NS = 0; { 000 ns of precomp }
- ADKF_PRE140NS = ADKF_PRECOMP0; { 140 ns of precomp }
- ADKF_PRE280NS = ADKF_PRECOMP1; { 280 ns of precomp }
- ADKF_PRE560NS = ADKF_PRECOMP0 + ADKF_PRECOMP1; { 560 ns of precomp }
-
-
- Const
-
- HSIZEBITS = 6;
- VSIZEBITS = 16 - HSIZEBITS;
- HSIZEMASK = $3F; { 2^6 - 1 }
- VSIZEMASK = $3FF; { 2^10 - 1 }
-
- MAXBYTESPERROW = 128;
-
- { definitions for blitter control register 0 }
-
- ABC = $80;
- ABNC = $40;
- ANBC = $20;
- ANBNC = $10;
- NABC = $08;
- NABNC = $04;
- NANBC = $02;
- NANBNC = $01;
-
- { some commonly used operations }
-
- A_OR_B = ABC + ANBC + NABC + ABNC + ANBNC + NABNC;
- A_OR_C = ABC + NABC + ABNC + ANBC + NANBC + ANBNC;
- A_XOR_C = NABC + ABNC + NANBC + ANBNC;
- A_TO_D = ABC + ANBC + ABNC + ANBNC;
-
- BC0B_DEST = 8;
- BC0B_SRCC = 9;
- BC0B_SRCB = 10;
- BC0B_SRCA = 11;
- BC0F_DEST = $100;
- BC0F_SRCC = $200;
- BC0F_SRCB = $400;
- BC0F_SRCA = $800;
-
- BC1F_DESC = 2; { blitter descend direction }
-
- DEST = $100;
- SRCC = $200;
- SRCB = $400;
- SRCA = $800;
-
- ASHIFTSHIFT = 12; { bits to right align ashift value }
- BSHIFTSHIFT = 12; { bits to right align bshift value }
-
- { definations for blitter control register 1 }
-
- LINEMODE = $01;
- FILL_OR = $08;
- FILL_XOR = $10;
- FILL_CARRYIN = $04;
- ONEDOT = $02; { one dot per horizontal line }
- OVFLAG = $20;
- SIGNFLAG = $40;
- BLITREVERSE = $02;
-
- SUD = $10;
- SUL = $08;
- AUL = $04;
-
- OCTANT8 = 24;
- OCTANT7 = 4;
- OCTANT6 = 12;
- OCTANT5 = 28;
- OCTANT4 = 20;
- OCTANT3 = 8;
- OCTANT2 = 0;
- OCTANT1 = 16;
-
- type
- pbltnode = ^tbltnode;
- tbltnode = record
- n : pbltnode;
- _function : Pointer;
- stat : Byte;
- blitsize : Integer;
- beamsync : Integer;
- cleanup : Pointer;
- end;
-
- Const
-
- { write definitions for dmaconw }
-
- DMAF_SETCLR = $8000;
- DMAF_AUDIO = $000F; { 4 bit mask }
- DMAF_AUD0 = $0001;
- DMAF_AUD1 = $0002;
- DMAF_AUD2 = $0004;
- DMAF_AUD3 = $0008;
- DMAF_DISK = $0010;
- DMAF_SPRITE = $0020;
- DMAF_BLITTER = $0040;
- DMAF_COPPER = $0080;
- DMAF_RASTER = $0100;
- DMAF_MASTER = $0200;
- DMAF_BLITHOG = $0400;
- DMAF_ALL = $01FF; { all dma channels }
-
- { read definitions for dmaconr }
- { bits 0-8 correspnd to dmaconw definitions }
-
- DMAF_BLTDONE = $4000;
- DMAF_BLTNZERO = $2000;
-
- DMAB_SETCLR = 15;
- DMAB_AUD0 = 0;
- DMAB_AUD1 = 1;
- DMAB_AUD2 = 2;
- DMAB_AUD3 = 3;
- DMAB_DISK = 4;
- DMAB_SPRITE = 5;
- DMAB_BLITTER = 6;
- DMAB_COPPER = 7;
- DMAB_RASTER = 8;
- DMAB_MASTER = 9;
- DMAB_BLITHOG = 10;
- DMAB_BLTDONE = 14;
- DMAB_BLTNZERO = 13;
-
-
- Const
-
- INTB_SETCLR = 15; { Set/Clear control bit. Determines if bits }
- { written with a 1 get set or cleared. Bits }
- { written with a zero are allways unchanged }
- INTB_INTEN = 14; { Master interrupt (enable only ) }
- INTB_EXTER = 13; { External interrupt }
- INTB_DSKSYNC = 12; { Disk re-SYNChronized }
- INTB_RBF = 11; { serial port Receive Buffer Full }
- INTB_AUD3 = 10; { Audio channel 3 block finished }
- INTB_AUD2 = 9; { Audio channel 2 block finished }
- INTB_AUD1 = 8; { Audio channel 1 block finished }
- INTB_AUD0 = 7; { Audio channel 0 block finished }
- INTB_BLIT = 6; { Blitter finished }
- INTB_VERTB = 5; { start of Vertical Blank }
- INTB_COPER = 4; { Coprocessor }
- INTB_PORTS = 3; { I/O Ports and timers }
- INTB_SOFTINT = 2; { software interrupt request }
- INTB_DSKBLK = 1; { Disk Block done }
- INTB_TBE = 0; { serial port Transmit Buffer Empty }
-
-
- INTF_SETCLR = $8000;
- INTF_INTEN = $4000;
- INTF_EXTER = $2000;
- INTF_DSKSYNC = $1000;
- INTF_RBF = $0800;
- INTF_AUD3 = $0400;
- INTF_AUD2 = $0200;
- INTF_AUD1 = $0100;
- INTF_AUD0 = $0080;
- INTF_BLIT = $0040;
- INTF_VERTB = $0020;
- INTF_COPER = $0010;
- INTF_PORTS = $0008;
- INTF_SOFTINT = $0004;
- INTF_DSKBLK = $0002;
- INTF_TBE = $0001;
-
- IMPLEMENTATION
-
- end.
-
-
-
-
-