HB A8 Hard Disk/Floppy Controller Settings and Configuration
CONTROL CONCEPTS, INC.
HB A8
Data bus: 8-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB (Floppy support version only)
MISCELLANEOUS TECHNICAL NOTE |
JP6 is not used and should remain open. S1/switch 7 is not used and should remain off. Turning on S1/switch 8 will result in error |
CONTROL CONCEPTS USA
HB A8
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CONNECTIONS | |
Function | Location |
4-pin connector-drive active LED | CN1 |
50-pin SCSI connector-internal | CN2 |
34-pin data cable connector-floppy drive | CN3 |
25-pinSCSI connector-external | CN4 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | Floppy drive enabled | JP1 | pins 1 & 2 closed |
Floppy drive disabled | JP1 | pins 2 & 3 closed | |
| » | Floppy drive address 3F0-3F7h | JP2 | pins 1 & 2 closed |
Floppy drive address 370-377h | JP2 | pins 2 & 3 closed | |
| » | Single spindle speed selected | JP3 | open |
Dual spindle speed selected | JP3 | closed | |
IRQ3 (Interrupt request-N/A in DOS) | JP4/jumper 1 | closed | |
IRQ4 (Interrupt request-N/A in DOS) | JP4/jumper 2 | closed | |
| » | IRQ5 (Interrupt request-N/A in DOS) | JP4/jumper 3 | closed |
IRQ7 (Interrupt request-N/A in DOS) | JP4/jumper 4 | closed | |
| » | Precompensation value is 125ns | JP5 | open |
Precompensation value is 185ns | JP5 | closed | |
BIOS ADDRESS | |||
Address | S1/switch 1 | S1/switch 2 | S1/switch 3 |
C8000-CBE80h | off | on | on |
E0000-E3E80h | on | off | on |
DC000-DFE80h | off | off | on |
D8000-DBE80h | on | on | off |
D4000-D7E80h | off | on | off |
D0000-D3E80h | on | off | off |
CC000-CFE80h | off | off | off |
SCSI ADDRESS | ||||
SCSI ID # | S1/switch 4 | S1/switch 5 | S1/switch 6 | |
| » | 7 | off | off | off |
6 | on | off | off | |
5 | off | on | off | |
4 | on | on | off | |
3 | off | off | on | |
2 | on | off | on | |
1 | off | on | on | |
0 | on | on | on | |
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