MD23, MD24 Hard Disk/Floppy Controller Settings and Configuration
EMULEX CORPORATION
MD23, MD24
Data bus: None (SCSI to ESDI interface)
Size: Drive card
Hard drives supported: SCSI to four RLL ESDI drives
Floppy drives supported: None
CONNECTIONS | MD23 | MD24 | ||||||
34-pin control cable connector-hard drive | P1 | P1 | ||||||
20-pin data cable connector-drive 0 | J2 | J2 | ||||||
20-pin data cable connector-drive 1 | J3 | J3 | ||||||
10-pin connector-user panel (factory use only) | J4 | J6 | ||||||
14-pin connector-test (factory use only) | J5 | J8 | ||||||
50-pin SCSI connector- to host adapter | J6 | J9 | ||||||
4-pin connector-DC power | J7 | J10 | ||||||
20-pin data cable connector-drive 2 | J8 | J4 | ||||||
20-pin data cable connector-drive 3 | J9 | J5 | ||||||
10-pin connector-user panel (factory use only) | J10 | J7 | ||||||
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
Not used | SW1/switch 4 | N/A | |
| » | Sector size set to 512 bytes | SW1/switch 5 | open |
Sector size set to 256 bytes | SW1/switch 5 | closed | |
| » | Spindle motor starts on power-up | SW1/switch 6 | open |
Spindle motor starts on command | SW1/switch 6 | closed | |
| » | Soft error reporting enabled | SW1/switch 7 | open |
Soft error reporting disabled | SW1/switch 7 | closed | |
| » | SCSI parity check disabled | SW1/switch 8 | open |
SCSI parity check enabled | SW1/switch 8 | closed | |
SCSI ADDRESS | ||||
SCSI ID | SW1/switch 1 | SW1/switch 2 | SW1/switch 3 | |
0 | off | off | off | |
1 | on | off | off | |
2 | off | on | off | |
3 | on | on | off | |
4 | off | off | on | |
5 | on | off | on | |
6 | off | on | on | |
| » | 7 | on | on | on |
MISCELLANEOUS TECHNICAL NOTES |
Note: For the SCSI termination power option, a # 1N5817 diode must be installed at socket CR2 and JP1 must be closed |
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