#ifndef JANUS_JANUSREG_H #define JANUS_JANUSREG_H /************************************************************************ * (Amiga side file) * * janusreg.h -- janus hardware registers (from amiga point of view) * * Copyright (c) 1986, Commodore Amiga Inc., All rights reserved. * * 7-15-88 - Bill Koester - Modified for self inclusion of required files *10-23-89 - Bill Koester - Added DISKTO[PC|AMIGA] bits for floppy switch ************************************************************************/ /* hardware interrupt bits (all bits are active low) */ #define JINTB_MINT (0) /* mono video ram written to */ #define JINTB_GINT (1) /* color video ram written to */ #define JINTB_CRT1INT (2) /* mono video control registers changed */ #define JINTB_CRT2INT (3) /* color video control registers changed */ #define JINTB_ENBKB (4) /* keyboard ready for next character */ #define JINTB_LPT1INT (5) /* parallel control register */ #define JINTB_COM2INT (6) /* serial control register */ #define JINTB_SYSINT (7) /* software int request */ #define JINTF_MINT (1<<0) #define JINTF_GINT (1<<1) #define JINTF_CRT1INT (1<<2) #define JINTF_CRT2INT (1<<3) #define JINTF_ENBKB (1<<4) #define JINTF_LPT1INT (1<<5) #define JINTF_COM2INT (1<<6) #define JINTF_SYSINT (1<<7) /* These are the defs for the io registers. All the registers are byte */ /* wide and the address are for Byte Access addresses */ #define jio_1000KeyboardData 0x061f /* data that keybd will read in a1000 */ #define jio_2000KeyboardData 0x1fff /* data that keybd will read in a2000 */ #define jio_SystemStatus 0x003f /* pc only register */ #define jio_NmiEnable 0x005f /* pc only register */ #define jio_Com2XmitData 0x007d #define jio_Com2ReceiveData 0x009d #define jio_Com2IntEnableW 0x00bd #define jio_Com2IntEnableR 0x00dd #define jio_Com2DivisorLSB 0x007f #define jio_Com2DivisorMSB 0x009f #define jio_Com2IntID 0x00ff #define jio_Com2LineCntrl 0x011f #define jio_Com2ModemCntrl 0x013f #define jio_Com2LineStatus 0x015f #define jio_Com2ModemStatus 0x017f #define jio_Lpt1Data 0x019f /* data byte */ #define jio_Lpt1Status 0x01bf /* see equates below */ #define jio_Lpt1Control 0x01df /* see equates below #define jio_MonoAddressInd 0x01ff /* current index into crt data regs */ #define jio_MonoData 0x02a1 /* every other byte for 16 registers */ #define jio_MonoControlReg 0x02ff #define jio_ColorAddressInd 0x021f /* current index into crt data regs */ #define jio_ColorData 0x02c1 /* every other byte for 16 registers */ #define jio_ColorControlReg 0x023f #define jio_ColorSelectReg 0x025f #define jio_ColorStatusReg 0x027f #define jio_DisplaySystemReg 0x029f #define jio_IntReq 0x1ff1 /* read clears, pc -> amiga ints */ #define jio_PcIntReq 0x1ff3 /* r/o, amiga -> pc ints */ #define jio_ReleasePcReset 0x1ff5 /* r/o, strobe release pc's reset */ #define jio_PCconfiguration 0x1ff7 /* r/w, give/set PC config. */ #define jio_IntEna 0x1ff9 /* r/w, enables pc int lines */ #define jio_PcIntGen 0x1ffb /* w/o, bit == 0 -> cause pc int */ #define jio_Control 0x1ffd /* w/o, random control lines */ /* now the magic bits in each register (and boy, are there a lot of them!) */ /* bits for Lpt1Status register */ #define JPCLSB_STROBE (0) #define JPCLSB_AUTOFEED (1) #define JPCLSB_INIT (2) #define JPCLSB_SELECTIN (3) #define JPCLSB_IRQENABLE (4) /* active 1 */ #define JPCLSF_STROBE (1<<0) #define JPCLSF_AUTOFEED (1<<1) #define JPCLSF_INIT (1<<2) #define JPCLSF_SELECTIN (1<<3) #define JPCLSF_IRQENABLE (1<<4) /* bits for Lpt1Control register */ #define JPCLCB_ERROR (3) #define JPCLCB_SELECT (4) #define JPCLCB_NOPAPER (5) #define JPCLCB_ACK (6) #define JPCLCB_BUSY (7) #define JPCLCF_ERROR (1<<3) #define JPCLCF_SELECT (1<<4) #define JPCLCF_NOPAPER (1<<5) #define JPCLCF_ACK (1<<6) #define JPCLCF_BUSY (1<<7) /* bits for PcIntReq, PcIntGen registers */ #define JPCINTB_IRQ1 (0) /* active high */ #define JPCINTB_IRQ3 (1) /* active low */ #define JPCINTB_IRQ4 (2) /* active low */ #define JPCINTB_IRQ7 (3) /* active low */ #define JPCINTF_IRQ1 (1<<0) #define JPCINTF_IRQ3 (1<<1) #define JPCINTF_IRQ4 (1<<2) #define JPCINTF_IRQ7 (1<<3) /* pc side interrupts */ #define JPCKEYINT (0xff) /* keycode available */ #define JPCSENDINT (0xfc) /* system request */ #define JPCLPT1INT (0xf6) /* printer acknowledge */ /* bits for RamSize */ #define JRAMB_EXISTS (0) /* unset if there is any ram at all */ #define JRAMB_2MEG (1) /* set if 2 meg, clear if 1/2 meg */ #define JRAMF_EXISTS (1<<0) /* unset if there is any ram at all */ #define JRAMF_2MEG (1<<1) /* set if 2 meg, clear if 1/2 meg */ /* bits for control register */ #define JCNTRLB_ENABLEINT (0) /* enable amiga interrupts */ #define JCNTRLB_DISABLEINT (1) /* disable amiga interrupts */ #define JCNTRLB_RESETPC (2) /* reset the pc. remember to strobe */ /* ReleasePcReset afterwards */ #define JCNTRLB_CLRPCINT (3) /* turn off all amiga->pc ints (except */ /* keyboard */ #define JCNTRLB_CLRBUSY (4) /* interfaces parallel busy bit */ #define JCNTRLB_DISKTOAMIGA (5) /* Floppy switch bits */ #define JCNTRLB_DISKTOPC (6) #define JCNTRLF_ENABLEINT (1<<0)/* enable amiga interrupts */ #define JCNTRLF_DISABLEINT (1<<1)/* disable amiga interrupts */ #define JCNTRLF_RESETPC (1<<2)/* reset the pc. remember to strobe */ /* ReleasePcReset afterwards */ #define JCNTRLF_CLRPCINT (1<<3)/* turn off all amiga->pc ints (except */ /* keyboard */ #define JCNTRLF_CLRBUSY (1<<4)/* interfaces parallel busy bit */ #define JCNTRLF_DISKTOAMIGA (1<<5)/* Switch disk to Amiga for floppy switch*/ /* Active low */ #define JCNTRLF_DISKTOPC (1<<6)/* Switch disk to PC for floppy switch */ /* Active low */ #endif /* End of JANUS_JANUSREG_H conditional compilation */