FAST DISK VLB Hard Disk/Floppy Controller Settings and Configuration
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 |
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