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) |
|
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 | |
| » |
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 | |
| » |
SCSI synchronous negotiation disabled |
J5/jumper 1 |
open |
|
SCSI synchronous negotiation enabled |
J5/jumper 1 |
closed | |
| » |
Normal operation |
J5/jumper 2 |
open |
|
Self diagnostics enabled |
J5/jumper 2 |
closed | |
| » |
SCSI parity check enabled |
J5/jumper 3 |
open |
|
SCSI parity check disabled |
J5/jumper 3 |
closed | |
| » |
BIOS enabled |
J6/jumper 1 |
closed |
|
BIOS disabled |
J6/jumper 1 |
open | |
| » |
Not used |
J6/jumpers 2-4 |
open |
| » |
Auto sense enabled |
J6/jumper 5 |
open |
|
Auto sense disable |
J6/jumper 5 |
closed | |
| » |
Floppy drive port address 3F0-3F7h |
J7/jumper 1 |
open |
|
Floppy drive port address 370-377h |
J7/jumper 1 |
closed | |
| » |
Floppy drive enabled |
J8/jumper 1 |
closed |
|
Floppy drive disabled |
J8/jumper 1 |
open | |
| » |
Floppy drive DMA Request is DREQ2 |
J8/jumper 2 |
closed |
|
Floppy drive DMA Request is DREQ3 |
J8/jumper 3 |
closed | |
| » |
Floppy drive DMA Acknowledge Is DACK2 |
J8/jumper 4 |
closed |
|
Floppy drive DMA Acknowledge is DACK3 |
J8/jumper 5 |
closed | |
| » |
Floppy drive Interrupt is IRQ6 |
J8/jumper 6 |
closed |
|
Floppy drive Interrupt is IRQ10 |
J8/jumper 7 |
closed | |
| » |
Floppy drive dual speed disabled |
J8/jumper 8 |
open |
|
Floppy drive dual speed enabled |
J8/jumper 8 |
closed | |
| » |
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 DACK0 |
J9/jumper 5 |
closed | |
| » |
AT Bus DMA Acknowledge is DACK5 |
J9/jumper 6 |
closed |
|
AT Bus DMA Acknowledge is DACK6 |
J9/jumper 7 |
closed | |
|
AT Bus DMA Acknowledge is DACK7 |
J9/jumper 8 |
closed | |
|
Hard drive Interrupt is IRQ9 |
J9/jumper 9 |
closed | |
|
Hard drive Interrupt is IRQ10 |
J9/jumper 10 |
closed | |
| » |
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 | |
| » |
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 | |
| » |
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 | |
| » |
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 | |
| » |
í 334h |
open |
open |
open |
| » |
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: Ȓ denotes default for 1540BS11/1542BS11 | ||||
|
BUS WAIT STATE | |||
|
Wait Time |
J7/jumper 5 |
J7/jumper 6 | |
| » |
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. |
