BT-545S Hard Disk/Floppy Controller Settings and Configuration
BUSLOGIC, INC.
BT-545S
Data bus: | 16-bit, ISA |
Size: | Three/quarter-length, full-height card |
Hard drive supported: | Up to seven SCSI drives |
Floppy drives supported: | Two 360KB, 720KB, 1.2MB or 1.44MB drives |
CONNECTIONS | |
Function | Location |
4-pin connector - Drive Active LED | J1 |
34-pin cable connector - floppy drive | J2 |
50-pin SCSI connector - internal | J3 |
50-pin SCSI connector - external | J4 |
SCSI ADDRESS | ||||
Address | SB1/switch 1 | SB1/switch 2 | SB1/switch 3 | |
0 | off | off | off | |
1 | off | off | on | |
2 | off | on | off | |
3 | off | on | on | |
4 | on | off | off | |
5 | on | off | on | |
6 | on | on | off | |
| » | 7 | on | on | on |
DMA CHANNEL | |||
DRQ | SB1/switch 7 | SB1/switch 8 | |
Disabled | off | off | |
DRQ7 | on | off | |
DRQ6 | off | on | |
| » | DRQ5 | on | on |
I/O PORT ADDRESS | ||||
Address | SB2/switch 1 | SB2/switch 2 | SB2/switch 3 | |
Reserved | off | off | off | |
134-137h | off | off | on | |
234-237h | off | on | off | |
334-337h | off | on | on | |
Reserved | on | off | off | |
130-133h | on | off | on | |
230-233h | on | on | off | |
| » | 330-333h | on | on | on |
BIOS ADDRESS | |||
Address | SB2/switch 4 | SB2/switch 5 | |
C800h | off | off | |
Disabled | on | off | |
D800h | off | on | |
| » | DC00h | on | on |
INTERRUPT REQUEST | |||||
IRQ | SB2/switch 6 | SB2/switch 7 | SB2/switch 8 | ||
Reserved | off | off | off | ||
Reserved | off | off | on | ||
IRQ15 | off | on | off | ||
IRQ14 | off | on | on | ||
IRQ12 | on | off | off | ||
IRQ9 | on | off | on | ||
IRQ10 | on | on | off | ||
| » | IRQ11 | on | on | on | |
Jumpers W3-W8 must be set in accordance with SB2/switches 6-8 | |||||
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | SCSI parity check enabled | SB1/switch 4 | on |
SCSI parity check disabled | SB1/switch 4 | off | |
>1GB drive support disabled | SB1/switch 5 | on | |
>1GB drive support enabled* | SB1/switch 5 | off | |
| » | Sync Negotiation initiated by BT-545S disabled | SB1/switch 6 | on |
Sync Negotiation initiated by BT-545S enabled | SB1/switch 6 | off | |
| » | Factory Configured - do not alter | W2 | open |
| » | Factory Configured - do not alter | W9 | open |
| » | Floppy drive port address is 3F0-3F7h | W14 | open |
Floppy drive port address is 370-377h | W14 | closed | |
| » | Floppy drive enabled | W15 & W16 | closed |
Floppy drive disabled | W15 & W16 | open | |
| » | IOCHRDY enabled | W17 | Pins 1-2 closed |
IOCHRDY disabled | W17 | Pins 2-3 closed | |
| » | Factory Configured - do not alter | W18 | closed |
| » | Sync transfer rate is 5MB/sec | W19 | closed |
Sync transfer rate is 10MB/sec | W19 | open | |
Note:The SCO UNIX device driver does not support drives greater than 1GB. | |||
DMA TRANSFER RATE | |||
Speed | W11 | W13 | |
| » | 5MB/sec | open | open |
5.7MB/sec | open | closed | |
6.7MB/sec | closed | open | |
8.0MB/sec | closed | closed | |
INTERRUPT REQUEST | ||||||||
IRQ | W3 | W4 | W5 | W6 | W7 | W8 | ||
IRQ15 | closed | open | open | open | open | open | ||
IRQ14 | open | closed | open | open | open | open | ||
IRQ12 | open | open | closed | open | open | open | ||
| » | IRQ11 | open | open | open | closed | open | open | |
IRQ10 | open | open | open | open | closed | open | ||
IRQ9 | open | open | open | open | open | closed | ||
SB2/switches 6-8 must be set in accordance with Jumpers W3-W8 | ||||||||
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