BOARD
ID="ADP7771"
NAME="Adaptec AHA-2740/2742 SCSI Host Adapter"
MFR="ADAPTEC, Inc."
CATEGORY="MSD"
SLOT=EISA
LENGTH=330
AMPERAGE=1000
SKIRT=NO
READID=YES
BUSMASTER=50
IOCHECK=VALID
DISABLE=SUPPORTED
COMMENTS="AHA-2740/2742 Configuration File Ver. 1.1"
IOPORT(1)=0zc87h ;Host configuration definition
INITVAL = 0000X00X
IOPORT(4)=0zc5ch ;Interrupt definition
INITVAL = X000XXXX
IOPORT(2)=0zc5dh ;Host configuration definition
INITVAL = XXXXXX00
IOPORT(3)=0zc5ah ;SCSI configuration
SIZE = WORD
INITVAL = XXXXXXXXXXXXXXXX
IOPORT(5)=0zc5fh ;Host configuration definition
INITVAL = 00XXXXXX
FUNCTION = "AIC-7770 Chip Reset"
SHOW = NO
CHOICE = ""
LINK
INIT = IOPORT(1) LOC(0) 1B
FUNCTION = "Host Adapter Interface Definitions"
TYPE = "AIC7771"
HELP = "These selections specify those configuration
settings that correspond to EISA host bus interface."
SUBFUNCTION = "Interrupt Level"
HELP = "Interrupt Level configures the interrupt channel (IRQ) used by the host adapter. Multiple AHA-2740
Series host adapters installed in your system can share the same IRQ; however, to increase system
performance, you may want to select a different IRQ for each host adapter installed.
The IRQ cannot be shared with ISA mode SCSI host adapters such as the Adaptec AHA-1540 and AHA-
1520 Series adapters. If those adapters are installed in your EISA system, they must be assigned unique
IRQs."
CHOICE = "IRQ 11"
LINK
IRQ = 11
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01011B
CHOICE = "IRQ 9"
LINK
IRQ = 9
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01001B
CHOICE = "IRQ 10"
LINK
IRQ = 10
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01010B
CHOICE = "IRQ 12"
LINK
IRQ = 12
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01100B
CHOICE = "IRQ 14"
LINK
IRQ = 14
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01110B
CHOICE = "IRQ 15"
LINK
IRQ = 15
SHARE = "AIC7771"
TRIGGER = LEVEL
INIT=IOPORT(1) LOC(3 0) 11B
INIT=IOPORT(4) LOC(7 3 2 1 0) 01111B
SUBFUNCTION = "Bus Release Time"
HELP = "Bus Release Time configures the amount of time, in BCLKS (Bus Clocks), the host adapter will continue
to transfer data after being pre-empted in bus master mode.
Normally 60 BCLKS is sufficient; however, if multiple bus master cards are installed in the system, you
may want to lower the value to free the EISA bus sooner."
CHOICE = "60 BCLKS"
LINK
INIT=IOPORT(2) LOC(5 4 3 2) 1111B
CHOICE = "44 BCLKS"
LINK
INIT=IOPORT(2) LOC(5 4 3 2) 1011B
CHOICE = "28 BCLKS"
LINK
INIT=IOPORT(2) LOC(5 4 3 2) 0111B
CHOICE = "12 BCLKS"
LINK
INIT=IOPORT(2) LOC(5 4 3 2) 0011B
CHOICE = "2 BCLKS"
LINK
INIT=IOPORT(2) LOC(5 4 3 2) 0000B
SUBFUNCTION = "Data FIFO Threshold"
HELP = "Data FIFO Threshold configures the percentage used by the host adapter to match SCSI and host system
data transfer rates.
Normally a Data FIFO Threshold of 100% is sufficient."
CHOICE = "100%"
LINK
INIT=IOPORT(2) LOC(7 6) 11B
CHOICE = "75%"
LINK
INIT=IOPORT(2) LOC(7 6) 10B
CHOICE = "50%"
LINK
INIT=IOPORT(2) LOC(7 6) 01B
CHOICE = "0%"
LINK
INIT=IOPORT(2) LOC(7 6) 00B
SUBFUNCTION = "Host Adapter BIOS Base Address"
HELP = "Host Adapter BIOS Base Address configures the BIOS base address for the host adapter; if you wish to
disable the host adapter BIOS, you can do so from this option.
When choosing the base address, verify that there is no conflict with other devices using the same
address.
Note: The BIOS must be enabled in order to boot from a SCSI fixed disk drive attached to the host
adapter."
CHOICE="D8000H"
COMBINE
MEMORY=16K
ADDRESS=0D8000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 011B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="CC000H"
COMBINE
MEMORY=16K
ADDRESS=0CC000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 000B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="D0000H"
COMBINE
MEMORY=16K
ADDRESS=0D0000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 001B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="D4000H"
COMBINE
MEMORY=16K
ADDRESS=0D4000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 010B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="DC000H"
COMBINE
MEMORY=16K
ADDRESS=0DC000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 100B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="E0000H"
COMBINE
MEMORY=16K
ADDRESS=0E0000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 101B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="E4000H"
COMBINE
MEMORY=16K
ADDRESS=0E4000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 110B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE="E8000H"
COMBINE
MEMORY=16K
ADDRESS=0E8000H
WRITABLE=YES
MEMTYPE = OTH
SHARE=NO
SIZE=BYTE
CACHE=YES
DECODE=32
INIT=IOPORT(5) LOC(2 1 0) 111B
INIT=IOPORT(5) LOC(5 4) 00B
CHOICE = "BIOS disabled"
DISABLE = YES
FREE
INIT=IOPORT(5) LOC(2 1 0) 000B
INIT=IOPORT(5) LOC(5 4) 11B
INCLUDE = "ADP7770.OVL"
