124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
//
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// This code is temporary. When Insignia supplies rom support, it should
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// be removed.
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//
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/* x86 v1.0
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*
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* XBIOS.H
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* Guest ROM BIOS support
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*
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* History
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* Created 20-Oct-90 by Jeff Parsons
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* 17-Apr-91 Trimmed by Dave Hastings for use in temp. softpc
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*
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* COPYRIGHT NOTICE
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* This source file may not be distributed, modified or incorporated into
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* another product without prior approval from the author, Jeff Parsons.
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* This file may be copied to designated servers and machines authorized to
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* access those servers, but that does not imply any form of approval.
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*/
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/* BIOS interrupts
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*/
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#define BIOSINT_DIVZERO 0x00 //
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#define BIOSINT_SSTEP 0x01 //
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#define BIOSINT_NMI 0x02 // for parity errors, too
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#define BIOSINT_BRKPT 0x03 //
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#define BIOSINT_OVFL 0x04 //
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#define BIOSINT_PRTSC 0x05 //
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#define BIOSINT_TMRINT 0x08 //
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#define BIOSINT_KBDINT 0x09 //
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#define BIOSINT_COM2INT 0x0B //
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#define BIOSINT_COM1INT 0x0C //
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#define BIOSINT_LPT2INT 0x0D //
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#define BIOSINT_FLPYINT 0x0E //
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#define BIOSINT_LPT1INT 0x0F //
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#define BIOSINT_VID 0x10 //
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#define BIOSINT_EQUIP 0x11 //
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#define BIOSINT_MEMORY 0x12 //
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#define BIOSINT_DSK 0x13 //
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#define BIOSINT_COM 0x14 //
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#define BIOSINT_OSHOOK 0x15 //
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#define BIOSINT_KBD 0x16 //
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#define BIOSINT_PRT 0x17 //
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#define BIOSINT_BASIC 0x18 //
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#define BIOSINT_WBOOT 0x19 //
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#define BIOSINT_TIME 0x1A //
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#define BIOSINT_CTRLBRK 0x1B //
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#define BIOSINT_TICK 0x1C //
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#define BIOSINT_VIDPARMS 0x1D //
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#define BIOSINT_FDSKPARMS 0x1E //
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#define BIOSINT_VIDGRAPH 0x1F //
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#define BIOSINT_OLDDISKIO 0x40 //
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#define BIOSINT_HDSK1PARMS 0x41 //
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#define BIOSINT_OLDVID 0x42 //
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#define BIOSINT_EXTVIDGRAPH 0x43 //
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#define BIOSINT_HDSK2PARMS 0x46 //
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/* BIOS Data Area locations
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*
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* So that all low-memory references are relative to the same segment
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* (ie, 0), we use 0:400 instead of 40:0 as the base address of this area.
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*
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* Note that as more individual BIOS modules are created (eg, xbiosvid,
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* xbiosdsk, etc), many of these BIOS data definitions should be moved to the
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* appropriate individual header file.
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*/
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#define BIOSDATA_SEG 0
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#define BIOSDATA_BEGIN 0x400
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#define BIOSDATA_RS232_BASE 0x400 // 4 COM adapter addresses
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#define BIOSDATA_PRINTER_BASE 0x408 // 4 LPT adapter addresses
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#define BIOSDATA_EQUIP_FLAG 0x410 // equipment flag (1 word)
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#define BIOSEQUIP_FLOPPY 0x0001 // machine has a floppy
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#define BIOSEQUIP_X87 0x0002 // X87=1 if coprocessor installed
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#define BIOSEQUIP_16KPLANAR 0x0000 //
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#define BIOSEQUIP_32KPLANAR 0x0004 //
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#define BIOSEQUIP_48KPLANAR 0x0008 //
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#define BIOSEQUIP_64KPLANAR 0x000C //
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#define BIOSEQUIP_PLANARMASK 0x000C //
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#define BIOSEQUIP_VIDEOMASK 0x0030 // video configuration bits
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#define BIOSEQUIP_COLOR40VIDEO 0x0010 //
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#define BIOSEQUIP_COLOR80VIDEO 0x0020 //
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#define BIOSEQUIP_MONOVIDEO 0x0030 //
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#define BIOSEQUIP_FLOPPYMASK 0x00C0 // # floppies-1 (if FLOPPY=1)
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#define BIOSEQUIP_COMMASK 0x0E00 // # COM ports
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#define BIOSEQUIP_PRINTERMASK 0xC000 // # LPT ports
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#define BIOSDATA_MFG_TST 0x412 // initialization flag (1 byte)
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#define BIOSDATA_MEMORY_SIZE 0x413 // memory size in K bytes (1 word)
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#define BIOSDATA_MFG_ERR_FLG 0x415 // mfg error codes (2 bytes)
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#define BIOSDATA_END 0x4FF
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#define BIOSDATA_BOOT 0x7C00
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/* BIOS ROM locations (assumed segment BIOSROM_SEG)
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*/
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#define BIOSROM_SEG 0xF000
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#define BIOSROM_WBOOT 0xE6F2
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#define BIOSROM_DSK 0xEC59
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#define BIOSROM_MEMORY 0xF841
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#define BIOSROM_EQUIP 0xF84D
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#define BIOSROM_IRET 0xFF53 // 1 byte IRET
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#define BIOSROM_RESET 0xFFF0 // 5 byte jmp
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#define BIOSROM_DATE 0xFFF5 // 8 byte date (eg, 04/24/81)
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#define BIOSROM_UNUSED1 0xFFFD
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#define BIOSROM_SIG 0xFFFE // PC ID byte
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#define BIOSROM_GBP 0xFFFF // location of GBP opcode (non-standard)
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#define BIOSSIG_PC 0xFF
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#define BIOSSIG_XT 0xFE
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#define BIOSSIG_JR 0xFD
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#define BIOSSIG_AT 0xFC // and many more...
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#define BIOSDATE_MINE '0','4','/','1','7','/','9','1'
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