;
;  Altos Basic SCSI Controller (EISA) [BSC(e)]
;	This configuration file is a sub-set of !acs0a31

;
; Board Identification Block
;

BOARD
  ID = "ACS0A41"
  NAME = "Altos Basic SCSI Controller (EISA)"
  MFR = "Altos Computer Systems"
  CATEGORY = "MSD"
  SLOT = EISA
  LENGTH = 188
  SKIRT = NO
  READID = YES
  AMPERAGE = 2000
  IOCHECK = VALID
  DISABLE = SUPPORTED


  COMMENTS="This board contains a SCSI controller (configured as
  	SCSI ID 7) which can handle up to 7 SCSI devices and provides 
	termination power for the SCSI bus.  This board also holds
	an Extension BIOS to allow booting from a disk device
	connected to the SCSI channel."

  HELP = "If LED CR2 (located along the top edge of the
  	board) is illuminated then the SCSI bus is
  	not receiving termination power
	and fuse F1 may be blown.  Also verify that
	bus terminators are installed only at the end of the bus
	and not on any devices along the bus."


;
; I/O Port Initialization Statement Block
;

IOPORT(1) = 0zCF0h			;Interrupt Level Register
  SIZE = BYTE
  INITVAL = 0xxx0000

IOPORT(2) = 0zCF3h			;Function 'Reset/Disable' Register 
  SIZE = BYTE
  INITVAL = 0000000x

IOPORT(4) = 0zCF4h			;BIOS & DMA Control Register
  SIZE = BYTE
  INITVAL = xxxxxx00

;The following I/O ports are actually SRAM and are accessable by the
; extension BIOS as such.
;If the addresses and/or bits of these ports change, the extension BIOS
; and EISA id must also change.

IOPORT(7) = 0z800h			;DOS device 80h SCSI assignment
  SIZE = BYTE
  INITVAL = 00000xxx

IOPORT(8) = 0z801h			;DOS device 81h SCSI assignment
  SIZE = BYTE
  INITVAL = 00000xxx

IOPORT(9) = 0z802h			;DMA channel for SCSI data xfer
  SIZE = BYTE
  INITVAL = 0000xxxx

IOPORT(10) = 0z803h			;BIOS & DMA control (for BIOS use)
  SIZE = BYTE
  INITVAL = xxxxxx00

IOPORT(11) = 0z804h			;Spare
  SIZE = BYTE
  INITVAL = xxxxxxxx


;
; Function Statement Block
;

FUNCTION = "SCSI Controller"
  TYPE = "MSD,SCSI"
  COMMENTS = "The controller on this board is configured as SCSI ID
	7 and supplies termination power for the SCSI bus."
  HELP = "If the LED CR2 is illuminated then the
  	SCSI bus is not receiving termination power
	and fuse F1 may be blown.  Also verify that
	bus terminators are installed only at the end of the bus
	and not on any devices along the bus."

  CHOICE = "Enabled"
      LINK
        IRQ = 15|7|5|10|11|9|14|{}
          SHARE = "msd"
          TRIGGER = LEVEL
       INIT = IOPORT(1)LOC(6-4) 111|011|101|010|001|100|110|000

      LINK
         DMA = 5 | 6 | 7 | {}
           SIZE = DWORD
           TIMING = TYPEB
       INIT = IOPORT(4)LOC(3-2) 01 | 10 | 11 | 00
       INIT = IOPORT(10)LOC(3-2) 01 | 10 | 11 | 00
       INIT = IOPORT(9)LOC(2-0) 101 | 110 | 111 | 000

	FREE
         PORT = 0z000h - 0z01Fh			;SCSI Control and Status
           SIZE = BYTE

      FREE
      INIT = IOPORT(2)LOC(0) 1			;Release SCSI Controller

  CHOICE = "Disabled"
    DISABLE = yes
    FREE
      INIT = IOPORT(2)LOC(0) 0			;Hold SCSI Controller in Reset
      PORT = 0z808h				;Force 'BIOS disabled'



GROUP = "SCSI BIOS and Boot Configuration"
  TYPE = "MSD,SCSI,BIOS"

FUNCTION = "SCSI Extension BIOS"
  COMMENTS = "The BIOS extension on this card allows booting
		from a disk device connected to the SCSI channel."

    CHOICE = "Enabled"
	LINK
	MEMORY = 8K
	ADDRESS = 0cc000h | 0d8000h | 0dc000h | 0c8000h
		MEMTYPE = OTH
		WRITABLE = NO
		SIZE = BYTE
		CACHE = YES
		SHARE = NO
	INIT = IOPORT(4)LOC(7-4) 1110 | 1101 | 1100 | 1111
	INIT = IOPORT(10)LOC(7-4) 1110 | 1101 | 1100 | 1111
	FREE
	PORT = 0z807h			;Don't allow 'None' for Boot Drive
	PORT = 0z808h			;Flag 'BIOS enabled'

    CHOICE = "Disabled"
	DISABLE = yes
	FREE
	INIT = IOPORT(4)LOC(7-4) 0000	;No BIOS extension
	INIT = IOPORT(10)LOC(7-4) 0000	;No BIOS extension
	;Force 'none' for drive assignments
	PORT = 0z800h-0z806h		;Flag 'ID 0-6' used


FUNCTION = "Primary (Boot) Drive"
	COMMENTS = "Be sure a Random Access Device is connected
		and addressed for the SCSI ID selected."

	CHOICE = "SCSI id 0"
		FREE
		PORT = 0z800h			;Flag 'ID 0' used
		INIT = IOPORT(7)LOC(2-0) 000

	CHOICE = "SCSI id 1"
		FREE
		PORT = 0z801h			;Flag 'ID 1' used
		INIT = IOPORT(7)LOC(2-0) 001
		
	CHOICE = "SCSI id 2"
		FREE
		PORT = 0z802h			;Flag 'ID 2' used
		INIT = IOPORT(7)LOC(2-0) 010
		
	CHOICE = "SCSI id 3"
		FREE
		PORT = 0z803h			;Flag 'ID 3' used
		INIT = IOPORT(7)LOC(2-0) 011
		
	CHOICE = "SCSI id 4"
		FREE
		PORT = 0z804h			;Flag 'ID 4' used
		INIT = IOPORT(7)LOC(2-0) 100
		
	CHOICE = "SCSI id 5"
		FREE
		PORT = 0z805h			;Flag 'ID 5' used
		INIT = IOPORT(7)LOC(2-0) 101
		
	CHOICE = "SCSI id 6"
		FREE
		PORT = 0z806h			;Flag 'ID 6' used
		INIT = IOPORT(7)LOC(2-0) 110
		
	CHOICE = "none"
		DISABLE = yes
		FREE
		PORT = 0z807h			;Force 'BIOS disabled'
		INIT = IOPORT(7)LOC(2-0) 111


FUNCTION = "Secondary Drive"

	CHOICE = "none"
		DISABLE = yes
		FREE
		INIT = IOPORT(8)LOC(2-0) 111

	CHOICE = "SCSI id 0"
		FREE
		PORT = 0z800h			;Flag 'ID 0' used
		INIT = IOPORT(8)LOC(2-0) 000
		
	CHOICE = "SCSI id 1"
		FREE
		PORT = 0z801h			;Flag 'ID 1' used
		INIT = IOPORT(8)LOC(2-0) 001
		
	CHOICE = "SCSI id 2"
		FREE
		PORT = 0z802h			;Flag 'ID 2' used
		INIT = IOPORT(8)LOC(2-0) 010
		
	CHOICE = "SCSI id 3"
		FREE
		PORT = 0z803h			;Flag 'ID 3' used
		INIT = IOPORT(8)LOC(2-0) 011
		
	CHOICE = "SCSI id 4"
		FREE
		PORT = 0z804h			;Flag 'ID 4' used
		INIT = IOPORT(8)LOC(2-0) 100
		
	CHOICE = "SCSI id 5"
		FREE
		PORT = 0z805h			;Flag 'ID 5' used
		INIT = IOPORT(8)LOC(2-0) 101
		
	CHOICE = "SCSI id 6"
		FREE
		PORT = 0z806h			;Flag 'ID 6' used
		INIT = IOPORT(8)LOC(2-0) 110
		

FUNCTION = "SCSI Controller data transfer method"
  COMMENTS = "If a DMA channel is assigned to the SCSI Controller,
  	the BIOS extension firmware on this card can use that
  	DMA channel to move data between the SCSI Controller
	and Host memory for improved data thru-put."
  HELP = "Some applications or memory managememt software will not
  	function correctly if DMA data transfers are enabled."

    CHOICE = "Direct Memory Access (DMA)"
	FREE
	INIT = IOPORT(9)LOC(3) 0	;use DMA

    CHOICE = "Programmed Input/Output (PIO)"
	FREE
	INIT = IOPORT(9)LOC(3) 1	;Use PIO


ENDGROUP