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#ifndef HARDWARE_CIA_H
#define HARDWARE_CIA_H
/*
** $Filename: hardware/cia.h $
** $Release: 2.04 Includes, V37.4 $
** $Revision: 36.3 $
** $Date: 90/11/05 $
**
** registers and bits in the Complex Interface Adapter (CIA) chip
**
** (C) Copyright 1985-1999 Amiga, Inc.
** All Rights Reserved
*/
#ifndef EXEC_TYPES_H
#include "exec/types.h"
#endif /* EXEC_TYPES_H */
/*
* ciaa is on an ODD address (e.g. the low byte) -- $bfe001
* ciab is on an EVEN address (e.g. the high byte) -- $bfd000
*
* do this to get the definitions:
* extern struct CIA ciaa, ciab;
*/
struct CIA {
UBYTE ciapra;
UBYTE pad0[0xff];
UBYTE ciaprb;
UBYTE pad1[0xff];
UBYTE ciaddra;
UBYTE pad2[0xff];
UBYTE ciaddrb;
UBYTE pad3[0xff];
UBYTE ciatalo;
UBYTE pad4[0xff];
UBYTE ciatahi;
UBYTE pad5[0xff];
UBYTE ciatblo;
UBYTE pad6[0xff];
UBYTE ciatbhi;
UBYTE pad7[0xff];
UBYTE ciatodlow;
UBYTE pad8[0xff];
UBYTE ciatodmid;
UBYTE pad9[0xff];
UBYTE ciatodhi;
UBYTE pad10[0xff];
UBYTE unusedreg;
UBYTE pad11[0xff];
UBYTE ciasdr;
UBYTE pad12[0xff];
UBYTE ciaicr;
UBYTE pad13[0xff];
UBYTE ciacra;
UBYTE pad14[0xff];
UBYTE ciacrb;
};
/* interrupt control register bit numbers */
#define CIAICRB_TA 0
#define CIAICRB_TB 1
#define CIAICRB_ALRM 2
#define CIAICRB_SP 3
#define CIAICRB_FLG 4
#define CIAICRB_IR 7
#define CIAICRB_SETCLR 7
/* control register A bit numbers */
#define CIACRAB_START 0
#define CIACRAB_PBON 1
#define CIACRAB_OUTMODE 2
#define CIACRAB_RUNMODE 3
#define CIACRAB_LOAD 4
#define CIACRAB_INMODE 5
#define CIACRAB_SPMODE 6
#define CIACRAB_TODIN 7
/* control register B bit numbers */
#define CIACRBB_START 0
#define CIACRBB_PBON 1
#define CIACRBB_OUTMODE 2
#define CIACRBB_RUNMODE 3
#define CIACRBB_LOAD 4
#define CIACRBB_INMODE0 5
#define CIACRBB_INMODE1 6
#define CIACRBB_ALARM 7
/* interrupt control register masks */
#define CIAICRF_TA (1<<CIAICRB_TA)
#define CIAICRF_TB (1<<CIAICRB_TB)
#define CIAICRF_ALRM (1<<CIAICRB_ALRM)
#define CIAICRF_SP (1<<CIAICRB_SP)
#define CIAICRF_FLG (1<<CIAICRB_FLG)
#define CIAICRF_IR (1<<CIAICRB_IR)
#define CIAICRF_SETCLR (1<<CIAICRB_SETCLR)
/* control register A register masks */
#define CIACRAF_START (1<<CIACRAB_START)
#define CIACRAF_PBON (1<<CIACRAB_PBON)
#define CIACRAF_OUTMODE (1<<CIACRAB_OUTMODE)
#define CIACRAF_RUNMODE (1<<CIACRAB_RUNMODE)
#define CIACRAF_LOAD (1<<CIACRAB_LOAD)
#define CIACRAF_INMODE (1<<CIACRAB_INMODE)
#define CIACRAF_SPMODE (1<<CIACRAB_SPMODE)
#define CIACRAF_TODIN (1<<CIACRAB_TODIN)
/* control register B register masks */
#define CIACRBF_START (1<<CIACRBB_START)
#define CIACRBF_PBON (1<<CIACRBB_PBON)
#define CIACRBF_OUTMODE (1<<CIACRBB_OUTMODE)
#define CIACRBF_RUNMODE (1<<CIACRBB_RUNMODE)
#define CIACRBF_LOAD (1<<CIACRBB_LOAD)
#define CIACRBF_INMODE0 (1<<CIACRBB_INMODE0)
#define CIACRBF_INMODE1 (1<<CIACRBB_INMODE1)
#define CIACRBF_ALARM (1<<CIACRBB_ALARM)
/* control register B INMODE masks */
#define CIACRBF_IN_PHI2 0
#define CIACRBF_IN_CNT (CIACRBF_INMODE0)
#define CIACRBF_IN_TA (CIACRBF_INMODE1)
#define 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) */
#define CIAB_GAMEPORT1 (7) /* gameport 1, pin 6 (fire button*) */
#define CIAB_GAMEPORT0 (6) /* gameport 0, pin 6 (fire button*) */
#define CIAB_DSKRDY (5) /* disk ready* */
#define CIAB_DSKTRACK0 (4) /* disk on track 00* */
#define CIAB_DSKPROT (3) /* disk write protect* */
#define CIAB_DSKCHANGE (2) /* disk change* */
#define CIAB_LED (1) /* led light control (0==>bright) */
#define CIAB_OVERLAY (0) /* memory overlay bit */
/* ciaa port B (0xbfe101) -- parallel port */
/* ciab port A (0xbfd000) -- serial and printer control */
#define CIAB_COMDTR (7) /* serial Data Terminal Ready* */
#define CIAB_COMRTS (6) /* serial Request to Send* */
#define CIAB_COMCD (5) /* serial Carrier Detect* */
#define CIAB_COMCTS (4) /* serial Clear to Send* */
#define CIAB_COMDSR (3) /* serial Data Set Ready* */
#define CIAB_PRTRSEL (2) /* printer SELECT */
#define CIAB_PRTRPOUT (1) /* printer paper out */
#define CIAB_PRTRBUSY (0) /* printer busy */
/* ciab port B (0xbfd100) -- disk control */
#define CIAB_DSKMOTOR (7) /* disk motorr* */
#define CIAB_DSKSEL3 (6) /* disk select unit 3* */
#define CIAB_DSKSEL2 (5) /* disk select unit 2* */
#define CIAB_DSKSEL1 (4) /* disk select unit 1* */
#define CIAB_DSKSEL0 (3) /* disk select unit 0* */
#define CIAB_DSKSIDE (2) /* disk side select* */
#define CIAB_DSKDIREC (1) /* disk direction of seek* */
#define CIAB_DSKSTEP (0) /* disk step heads* */
/* ciaa port A (0xbfe001) */
#define CIAF_GAMEPORT1 (1<<7)
#define CIAF_GAMEPORT0 (1<<6)
#define CIAF_DSKRDY (1<<5)
#define CIAF_DSKTRACK0 (1<<4)
#define CIAF_DSKPROT (1<<3)
#define CIAF_DSKCHANGE (1<<2)
#define CIAF_LED (1<<1)
#define CIAF_OVERLAY (1<<0)
/* ciaa port B (0xbfe101) -- parallel port */
/* ciab port A (0xbfd000) -- serial and printer control */
#define CIAF_COMDTR (1<<7)
#define CIAF_COMRTS (1<<6)
#define CIAF_COMCD (1<<5)
#define CIAF_COMCTS (1<<4)
#define CIAF_COMDSR (1<<3)
#define CIAF_PRTRSEL (1<<2)
#define CIAF_PRTRPOUT (1<<1)
#define CIAF_PRTRBUSY (1<<0)
/* ciab port B (0xbfd100) -- disk control */
#define CIAF_DSKMOTOR (1<<7)
#define CIAF_DSKSEL3 (1<<6)
#define CIAF_DSKSEL2 (1<<5)
#define CIAF_DSKSEL1 (1<<4)
#define CIAF_DSKSEL0 (1<<3)
#define CIAF_DSKSIDE (1<<2)
#define CIAF_DSKDIREC (1<<1)
#define CIAF_DSKSTEP (1<<0)
#endif /* HARDWARE_CIA_H */