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 |
|
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 | |
|
|
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 | |
|
|
Synchronous negotiation disabled |
J1/jumper 1 |
open |
|
|
Synchronous negotiation enabled |
J1/jumper 1 |
closed |
|
|
Factory test disabled |
J1/jumper 2 |
open |
|
|
Factory test enabled |
J1/jumper 2 |
closed |
|
|
SCSI parity checking enabled |
J1/jumper 3 |
open |
|
|
SCSI parity checking disabled |
J1/jumper 3 |
closed |
|
|
LA enable (Only on early W1542A) |
J8 |
closed |
|
|
LA disable (Only on early W1542A) |
J8 |
open |
|
|
Auto request sense enabled |
J9/jumper 1 |
open |
|
|
Auto request sense disabled |
J9/jumper 1 |
closed |
|
|
Factory configured - do not alter |
J9/jumpers 2-4 |
open |
|
|
BOIS enabled |
J11 |
closed |
|
|
BIOS disabled |
J11 |
open |
|
|
Floppy address 3F0-3F7h |
J12 |
open |
|
|
Floppy address 370-377h |
J12 |
closed |
|
|
Floppy drive enabled |
J13 |
closed |
|
|
Floppy drive disabled |
J13 |
open |
|
|
Floppy drive Interrupt is IRQ6 |
J17 |
pins 1 & 2 closed |
|
|
Floppy drive Interrupt is IRQ10 |
J17 |
pins 2 & 3 closed |
|
|
Floppy drive DMA Request is DREQ2 |
J18 |
pins 1 & 2 closed |
|
|
Floppy drive DMA Request is DREQ3 |
J18 |
pins 2 & 3 closed |
|
|
Floppy drive DMA Acknowledge Is DACK2 |
J19 |
pins 1 & 2 closed |
|
|
Floppy drive DMA Acknowledge is DACK3 |
J19 |
pins 2 & 3 closed |
|
DMA CHANNEL | |||||
|
DRQ |
J1/Jumper 7 |
J1/Jumper 8 |
J14 |
J15 | |
|
|
0 |
closed |
closed |
Jumper 1-closed |
Jumper 1-closed |
|
|
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 |
|
|
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 | |
|
|
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 |
|
|
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 | |
|
|
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 | |
|
|
DC000h |
open |
open |
|
|
CC000h |
closed |
open |
|
|
D8000h |
open |
closed |
|
|
C8000h |
closed |
closed |