OMTI 7100, OMTI 7200, OMTI 7400 Hard Disk/Floppy Controller Settings and Configuration
SCIENTIFIC MICRO SYSTEMS, INC.
OMTI 7100, OMTI 7200, OMTI 7400
Data bus: | 50-pin SCSI interface |
Size: | 5.25" FF |
Hard drive supported: | Up to two ST506/412 MFM drives, up to two ESDI drive |
Floppy drives supported: | Two 360KB, 720KB, 1.2MB, 1.44Mb or 8" drives (except 7100) |
CONNECTIONS | |
Function | Location |
50-pin SCSI interface | J1 |
34-pin ESDI or MFM disk control connector | J2 |
20-pin data cable connector | J3 |
20-pin data cable connector | J4 |
34-pin floppy drive connector (not in 7100) | J7 |
50-pin tape drive connector (7400 only) | J8 |
DC power connector | J10 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | SCSI parity enabled | W4 | closed |
| » | SCSI parity disabled | W4 | open |
| » | Spindle motor starts on power up (used with ESDI) | W5 | closed |
| » | Spindle motor starts on command only (used with ESDI) | W5 | open |
| » | ST506/412 interface for drive select 1 enabled | W6 | open |
| » | ESDI interface for drive select 1 enabled | W6 | closed |
| » | ST506/412 interface for drive select 2 enabled | W7 | open |
| » | ESDI interface for drive select 2 enabled | W7 | closed |
| » | Factory configured - do not alter | W8 | N/A |
| » | Factory configured - do not alter | W9 | N/A |
| » | Factory configured - do not alter | W10 | N/A |
| » | Factory configured - do not alter | W11 | N/A |
| » | Factory configured - do not alter | W12 | N/A |
| » | Factory configured - do not alter | W13 | N/A |
| » | TRMPWR supplied by board | W14/pins 1 & 2 | closed |
| » | TRMPWR supplied by SCSI bus | W14/pins 2 & 3 | closed |
| » | Ready signal from pin 2 to FDC 765 disabled | W15 | open |
| » | Ready signal from pin 2 to FDC 765 enabled | W15 | closed |
| » | Ready signal from pin 34 to FDC 765 disabled | W16 | open |
| » | Ready signal from pin 34 to FDC 765 enabled | W16 | closed |
| » | Factory configured - do not alter | W17 | N/A |
| » | Motor on signal delay enabled | W18 | open |
| » | Motor on signal enabled | W18 | closed |
| » | Factory configured - do not alter | W21 | N/A |
| » | Factory configured - do not alter | W22 | N/A |
| » | QIC-02 (tape drive) parity enabled (7400 only) | W25 | closed |
| » | QIC-02 (tape drive) parity disabled (7400 only) | W25 | open |
| » | Factory configured - do not alter | W29 | N/A |
| » | Disk change detection from FDD connector pin 2 enabled | W37 | closed |
| » | Disk change detection from FDD connector pin 2 disabled | W37 | open |
| » | Disk change detection from FDD connector pin 34 enabled | W38 | closed |
| » | Disk change detection from FDD connector pin 34 disabled | W38 | open |
| » | Clear disk change signal disabled | W39 | open |
| » | Clear disk change signal enabled | W39/pins 1 & 2 | closed |
Note: Drive select 1 & 2 refer to the drive select jumper setting on the drive itself and should be set to 1 & 2 respectively. When W39/pins 1 & 2 closed drive select 4 must not be used. Jumpers W15, W16, W17, W18, W37, W38, W39 refer to flexible disk drives and apply only to models 7200 & 7400. | |||
SCSI ADDRESS | ||||
SCSI ID | W1 | W2 | W3 | |
| » | 0 | open | open | open |
| » | 1 | closed | open | open |
| » | 2 | open | closed | open |
| » | 3 | closed | closed | open |
| » | 4 | open | open | closed |
| » | 5 | closed | open | closed |
| » | 6 | open | closed | close |
| » | 7 | closed | closed | closed |
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