AMERICAN MEGATRENDS, INC.
FAST DISK VLB
|
Data bus: |
32-bit, VL-bus |
|
Size: |
Three/quarter-length, full-height card |
|
Hard drive supported: |
Up to seven SCSI devices |
|
Floppy drives supported: |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
|
CONNECTIONS | |
|
Function |
Location |
|
4-pin connector-Drive active LED |
J1 |
|
20-pin factory test connector |
J2 |
|
34-pin control cable connector-floppy drive |
J3 |
|
50-pin SCSI connector - internal |
J4 |
|
50-pin SCSI connector - external |
J6 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Location |
Setting | |
|
|
SCSI termination enabled |
J8 |
closed |
|
|
SCSI termination disabled |
J8 |
open |
|
|
Local Bus speed < 50MHz |
J11 |
pins 2 & 3 closed |
|
|
Local Bus speed > 50MHz |
J11 |
pins 1 & 2 closed |
|
|
ISA mode enabled |
SW1/switch 6 |
off |
|
|
EISA mode enabled |
SW1/switch 6 |
on |
|
|
Hard drive capacity > 1GB disabled |
SW2/switch 1 |
off |
|
|
Hard drive capacity > 1GB enabled |
SW2/switch 1 |
on |
|
|
Cache memory enabled |
SW2/switch 2 |
off |
|
|
Cache memory disabled |
SW2/switch 2 |
on |
|
|
Single-sector commands separate caching disabled |
SW2/switch 3 |
off |
|
|
Single-sector commands separate caching enabled |
SW2/switch 3 |
on |
|
|
Caching for removable drives disabled |
SW2/switch 4 |
off |
|
|
Caching for removable drives enabled |
SW2/switch 4 |
on |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Location |
Setting | |
|
|
Delayed write caching enabled |
SW2/switch 5 |
off |
|
|
Write-through caching enabled |
SW2/switch 5 |
on |
|
|
SCSI autoselection time-out enabled |
SW2/switch 6 |
off |
|
|
SCSI autoselection time-out disabled |
SW2/switch 6 |
on |
|
|
SCSI synchronous negotiation enabled |
SW3/switch 4 |
off |
|
|
SCSI synchronous negotiation disabled |
SW3/switch 4 |
on |
|
|
SCSI 10MB/sec data transfer rate enabled |
SW3/switch 5 |
off |
|
|
SCSI 5MB/sec data transfer rate enabled |
SW3/switch 5 |
on |
|
|
Adaptec 154x-type target allocation disabled |
SW3/switch 6 |
off |
|
|
Adaptec 154x-type target allocation enabled |
SW3/switch 6 |
on |
|
|
32-bit operation (Extended Mode) enabled |
SW3/switch 7 |
off |
|
|
32-bit operation (Extended Mode) disabled |
SW3/switch 7 |
on |
|
|
Support for 7 drives (DOS 5.0 and later) enabled |
SW3/switch 8 |
off |
|
|
Support for 7 drives (DOS 5.0 and later) disabled |
SW3/switch 8 |
on |
|
|
Floppy drive enabled |
SW5/switch 1 |
on |
|
|
Floppy drive disabled |
SW5/switch 1 |
off |
|
|
Normal operation enabled |
SW5/switch 2 |
off |
|
|
Diagnostic mode enabled |
SW5/switch 2 |
on |
|
SCSI HOST ADAPTER SLOT NUMBER | ||||
|
Slot Number |
SW1/switch 1 |
SW1/switch 2 |
SW1/switch 3 | |
|
|
1 |
off |
off |
off |
|
|
2 |
on |
off |
off |
|
|
3 |
off |
on |
off |
|
|
4 |
on |
on |
off |
|
|
5 |
off |
off |
on |
|
|
6 |
on |
off |
on |
|
|
7 |
off |
on |
on |
|
|
8 |
on |
on |
on |
|
MOTHERBOARD SPEED CONFIGURATION | |||
|
Speed |
SW1/switch 4 |
SW1/switch 5 | |
|
|
20 or 25MHz |
off |
off |
|
|
33 or 40MHz |
on |
off |
|
|
50MHz |
off |
on |
|
I/O PORT ADDRESS | ||||
|
Address |
SW3/switch 1 |
SW3/switch 2 |
SW3/switch 3 | |
|
|
130-133h |
on |
off |
off |
|
|
134-137h |
on |
off |
on |
|
|
230-233h |
off |
on |
off |
|
|
234-237h |
off |
on |
on |
|
|
330-333h |
off |
off |
off |
|
|
334-337h |
off |
off |
on |
|
DMA CHANNEL CONFIGURATION | |||
|
DMA Channel |
SW4/switch 1 |
SW4/switch 2 | |
|
|
5 |
off |
off |
|
|
6 |
on |
off |
|
|
7 |
off |
on |
|
|
No Channel selected |
on |
on |
|
INRTERRUPT REQUEST CONFIGURATION | ||||
|
IRQ |
SW4/switch 3 |
SW4/switch 4 |
SW4/switch 5 | |
|
|
9 |
on |
off |
off |
|
|
10 |
off |
on |
off |
|
|
11 |
off |
off |
off |
|
|
12 |
on |
on |
off |
|
|
14 |
off |
off |
on |
|
|
15 |
on |
off |
on |
|
BIOS ADDRESS | ||||
|
Address |
SW4/switch 6 |
SW4/switch 7 |
SW4/switch 8 | |
|
|
C8000h |
off |
off |
off |
|
|
D8000h |
on |
off |
off |
|
|
D4000h |
off |
on |
off |
|
|
D0000h |
on |
on |
off |
|
|
CC000h |
off |
off |
on |
|
|
DC000h |
on |
off |
on |
|
|
Disabled |
off |
on |
on |
|
|
Disabled |
on |
on |
on |
|
MISCELLANEOUS TECHNICAL NOTES |
|
J5 is factory configured in the closed position - do not alter |