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ADAPTEC, INC.
AHA-1540A, AHA-1542A
Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB or 1.44MB
[Image]
CONNECTIONS
Function Location
50-pin SCSI connector-external CN1
50-pin SCSI connector-internal CN2
34-pin data cable connector-floppy drive CN4
4-pin connector-drive active LED J5
SCSI ADDRESS
SCSI ID
J1/jumper 4
J1/jumper 5
J1/jumper 6
ť
7
open
open
open
6
closed
open
open
5
open
closed
open
4
closed
closed
open
3
open
open
closed
2
closed
open
closed
1
open
closed
closed
0
closed
closed
closed
USER CONFIGURABLE SETTINGS
Function Location Setting
ť Synchronous negotiation J1/jumper 1 open
disabled
Synchronous negotiation J1/jumper 1 closed
enabled
ť Factory test disabled J1/jumper 2 open
Factory test enabled J1/jumper 2 closed
ť SCSI parity checking enabled J1/jumper 3 open
SCSI parity checking disabled J1/jumper 3 closed
ť LA enable (Only on early J8 closed
W1542A)
LA disable (Only on early J8 open
W1542A)
ť Auto request sense enabled J9/jumper 1 open
Auto request sense disabled J9/jumper 1 closed
ť Factory configured - do not J9/jumpers 2-4 open
alter
ť BOIS enabled J11 closed
BIOS disabled J11 open
ť Floppy address 3F0-3F7h J12 open
Floppy address 370-377h J12 closed
ť Floppy drive enabled J13 closed
Floppy drive disabled J13 open
ť Floppy drive Interrupt is IRQ6 J17 pins 1 & 2
closed
Floppy drive Interrupt is J17 pins 2 & 3
IRQ10 closed
ť Floppy drive DMA Request is J18 pins 1 & 2
DREQ2 closed
Floppy drive DMA Request is J18 pins 2 & 3
DREQ3 closed
ť Floppy drive DMA Acknowledge J19 pins 1 & 2
Is DACK2 closed
Floppy drive DMA Acknowledge J19 pins 2 & 3
is DACK3 closed
DMA CHANNEL
DRQ
J1/Jumper 7
J1/Jumper 8
J14
J15
0
closed
closed
Jumper
1-closed
Jumper
1-closed
ť
5
open
closed
Jumper
2-closed
Jumper
2-closed
6
closed
open
Jumper
3-closed
Jumper
3-closed
7
open
open
Jumper
4-closed
Jumper
4-closed
INTERRUPT REQUEST
IRQ J1/Jumper 9 J1/Jumper 10 J1/Jumper 11 J16
9 open open open Jumper
1-closed
10 closed open open Jumper
2-closed
ť 11 open closed open Jumper
3-closed
12 closed closed open Jumper
4-closed
14 open open closed Jumper
5-closed
15 closed open closed Jumper
6-closed
DMA TRANSFER RATE
Speed
J1/jumper 12
J1/jumper 13
ť
5.0
open
open
5.7
closed
open
6.7
open
closed
8.0
closed
closed
I/O PORT ADDRESS
Address J6/Jumper 1 J6/Jumper 2 J6/Jumper 3
334h open open open
ť 330h open open closed
234h open closed open
230h open closed closed
134h closed open open
130h closed open closed
BUS WAIT STATE
Delay
J7/jumper 1
J7/jumper 2
J7/jumper 3
J7/jumper 4
ť
Disable
closed
open
open
open
100nsec
open
closed
open
open
200nsec
open
open
closed
open
300nsec
open
open
open
closed
BIOS ADDRESS
Address J10/jumper 1 J10/jumper 2
ť DC000h open open
CC000h closed open
D8000h open closed
C8000h closed closed
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ADAPTEC, INC.
AHA-1540B, AHA-1542B
(Also Sold as the Maynard HA-101S)
Data bus: 16-bit, ISA
Size: Three-quarter length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB or 1.44MB (AHA-1542B)
None (AHA-1540B, HA-101S)
[Image]
CONNECTIONS
Function Location
34-pin data cable connector-floppy drive CN1
50-pin SCSI connector-internal CN2
50-pin SCSI connector-external CN3
4-pin connector-drive active LED CN4
SCSI ADDRESS
Select J5/jumper 4 J5/jumper 5 J5/jumper 6
ť 7 open open open
6 closed open open
5 open closed open
4 closed closed open
3 open open closed
2 closed open closed
1 open closed closed
0 closed closed closed
USER CONFIGURABLE SETTINGS
Function Location Setting
ť SCSI synchronous negotiation J5/jumper 1 open
disabled
SCSI synchronous negotiation J5/jumper 1 closed
enabled
ť Normal operation J5/jumper 2 open
Self diagnostics enabled J5/jumper 2 closed
ť SCSI parity check enabled J5/jumper 3 open
SCSI parity check disabled J5/jumper 3 closed
ť BIOS enabled J6/jumper 1 closed
BIOS disabled J6/jumper 1 open
ť Not used J6/jumpers 2-4 open
ť Auto sense enabled J6/jumper 5 open
Auto sense disable J6/jumper 5 closed
ť Floppy drive port address J7/jumper 1 open
3F0-3F7h
Floppy drive port address J7/jumper 1 closed
370-377h
ť Floppy drive enabled J8/jumper 1 closed
Floppy drive disabled J8/jumper 1 open
ť Floppy drive DMA Request is J8/jumper 2 closed
DREQ2
Floppy drive DMA Request is J8/jumper 3 closed
DREQ3
ť Floppy drive DMA Acknowledge J8/jumper 4 closed
Is DACK2
Floppy drive DMA Acknowledge J8/jumper 5 closed
is DACK3
ť Floppy drive Interrupt is J8/jumper 6 closed
IRQ6
Floppy drive Interrupt is J8/jumper 7 closed
IRQ10
ť Floppy drive dual speed J8/jumper 8 open
disabled
Floppy drive dual speed J8/jumper 8 closed
enabled
ť AT Bus DMA Request is DREQ5 J9/jumper 2 closed
AT Bus DMA Request is DREQ0 J9/jumper 1 closed
AT Bus DMA Request is DREQ6 J9/jumper 3 closed
AT Bus DMA Request is DREQ7 J9/jumper 4 closed
AT Bus DMA Acknowledge is J9/jumper 5 closed
DACK0
ť AT Bus DMA Acknowledge is J9/jumper 6 closed
DACK5
AT Bus DMA Acknowledge is J9/jumper 7 closed
DACK6
AT Bus DMA Acknowledge is J9/jumper 8 closed
DACK7
Hard drive Interrupt is IRQ9 J9/jumper 9 closed
Hard drive Interrupt is IRQ10 J9/jumper 10 closed
ť Hard drive Interrupt is IRQ11 J9/jumper 11 closed
Hard drive Interrupt is IRQ12 J9/jumper 12 closed
Hard drive Interrupt is IRQ14 J9/jumper 13 closed
Hard drive Interrupt is IRQ15 J9/jumper 14 closed
DMA CHANNEL
DRQ J5/jumper 7 J5/jumper 8
ť 5 open closed
6 closed open
7 open open
0 closed closed
INTERRUPT REQUEST
IRQ J5/jumper 9 J5/jumper 10 J5/jumper 11
9 open open open
10 closed open open
ť 11 open closed open
12 closed closed open
14 open open closed
15 closed open closed
DMA TRANSFER RATE
Speed J5/jumper 12 J5/jumper 13
5.0Mb/s open open
ť 5.7Mb/s closed open
6.7Mb/s open closed
8.0Mb/s closed closed
I/O PORT ADDRESS
Address J7/jumper 2 J7/jumper 3 J7/jumper 4
ť í 334h open open open
ť 330h closed open open
234h open closed open
230h closed closed open
134h open open closed
130h closed open closed
Not used closed closed closed
Note: ťí denotes default for 1540BS11/1542BS11
BUS WAIT STATE
Wait Time J7/jumper 5 J7/jumper 6
ť Disable open open
100nsec closed open
200nsec open closed
300nsec closed closed
MISCELLANEOUS TECHNICAL NOTE
Note: Manufacturer documentation does not specify possible BIOS memory
addresses, but a selection of DC00:6 has been recommended by some card
users.
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ADAPTEC, INC.
AHA-1540C, AHA-1542C
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drive supported: Up to seven SCSI devices
Floppy drives supported: 360KB, 720KB, 1.2MB, or 1.44MB (2)
[Image]
CONNECTIONS
Function Location
SCSI drive interface (50 pin) internal CN1
SCSI drive interface (50 pin) external CN2
Floppy drive interface (AHA-1542C only) CN3
Hard drive activity LED CN4
USER CONFIGURABLE SETTINGS
Function Location Setting
ť SCSI Termination set with SW1/switch 1 off
configuration software
SCSI Termination enabled SW1/switch 1 on
ť Floppy drive enabled SW1/switch 5 off
Floppy drive disabled SW1/switch 5 on
I/O PORT ADDRESS CONFIGURATION
Address SW1/switch 2 SW1/switch 3 SW1/switch 4
330-333h off off off
334-337h on off off
230-233h off on off
234-237h on on off
130-133h off off on
134-137h on off on
Reserved off on on
Reserved on on on
BIOS ADDRESS CONFIGURATION
Address SW1/switch 6 SW1/switch 7 SW1/switch 8
DC000h off off off
D8000h on off off
D4000h off on off
D0000h on on off
CC000h off off on
C8000h on off on
Reserved off on on
Disabled on on on
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ADAPTEC, INC.
AHA-1542CF, AHA-1540CP, AHA-1542CF, AHA-1542CP
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drive supported: Up to seven SCSI drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives
[Image]
CONNECTIONS
Function Location
50-pin SCSI connector - internal CN1
50-pin SCSI connector - external CN2
34-pin control cable connector - floppy drive CN3
4-pin connector - drive active LED CN4
USER CONFIGURABLE SETTINGS
Function Location Setting
ť SCSI Termination set through SW1/1 off
software
SCSI Termination enabled SW1/1 on
ť Floppy drive enabled SW1/5 off
Floppy drive disabled SW1/5 on
I/O PORT ADDRESS SELECTION
Address SW1/2 SW1/3 SW1/4
ť 330-333h off off off
334-337h on off off
230-233h off on off
234-237h on on off
130-133h off off on
134-137h on off on
Reserved off on on
Reserved on on on
BIOS ADDRESS SELECTION
Address SW1/6 SW1/7 SW1/8
ť DC000h off off off
D8000h on off off
D4000h off on off
D0000h on on off
CC000h off off on
C8000h on off on
Reserved off on on
Disabled on on on