DISKMASTER Hard Disk/Floppy Controller Settings and Configuration
COGENT DATA TECHNOLOGIES, INC.
DISKMASTER
Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Two RLL ST506/412 and two ESDI drives, or
four ESDI drives may be daisy-chained off of CN2
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
CONNECTIONS | |
Function | Location |
34-pin control cable connector-ST506 hard drives | CN1 |
34-pin control cable connector-ESDI hard drives | CN2 |
34-pin data cable connector-floppy drive | CN3 |
20-pin data cable connector-drive 1 | CN4 |
20-pin data cable connector-drive 2 | CN5 |
20-pin data cable connector-drive 3 | CN6 |
20-pin data cable connector-drive 4 | CN7 |
6-pin EACK connector - (For use with an E/MASTER Ethernet board) | CN9 |
6-pin ERQ connector - (For use with an E/MASTER Ethernet board) | CN10 |
4-pin connector-drive active LED | CN31 |
USER CONFIGURABLE SETTINGS | |||
Function | Location | Setting | |
| » | No DMA expansion | JP4 | closed |
Supports E/Master ethernet | JP4 | open | |
| » | Drive 4 is an ST506 | JP5* | pins 1 & 2 closed |
Drive 4 is an ESDI | JP5* | pins 2 & 3 closed | |
| » | Drive 3 is an ST506 | JP6* | pins 1 & 2 closed |
Drive 3 is an ESDI | JP6* | pins 2 & 3 closed | |
| » | Drive 2 is an ESDI | JP7* | pins 2 & 3 closed |
Drive 2 is an ST506 | JP7* | pins 1 & 2 closed | |
| » | Drive 1 is an ESDI | JP8* | pins 2 & 3 closed |
Drive 1 is an ST506 | JP8* | pins 1 & 2 closed | |
| » | Floppy drive enabled | JP36 | pins 2 & 3 closed |
Floppy drive disabled | JP36 | pins 1 & 2 closed | |
| » | Reserved for future use | JP37-39 | open |
Note:* Both pin sets must be set alike | |||
CONTROLLER CLOCK CONFIGURATION | |||
Function | JP40 | JP41 | |
| » | Set at 10MHz | pins 2 & 3 closed | pins 1 & 2 closed |
Disabled, bus clock timing enabled | pins 1 & 2 closed | pins 2 & 3 closed | |
DMA CHANNEL | ||||
DRQ | JP1 & JP2/jumper 1 | JP1 & JP2/jumper 2 | JP1 & JP2/jumper 3 | |
DRQ5 | closed | open | open | |
| » | DRQ6 | open | closed | open |
DRQ7 | open | open | closed | |
INTERRUPT REQUEST - JP3 | |||||||
# | Jumper 1 | Jumper 2 | Jumper 3 | Jumper 4 | Jumper 5 | Jumper 6 | Jumper 7 |
3 | closed | open | open | open | open | open | open |
5 | open | closed | open | open | open | open | open |
9 | open | open | closed | open | open | open | open |
10 | open | open | open | closed | open | open | open |
12 | open | open | open | open | closed | open | open |
14 | open | open | open | open | open | closed | open |
15 | open | open | open | open | open | open | closed |
BIOS ADDRESS | |||||||
ADDRESS | BINARY | JP18 | JP17 | JP16 | JP15 | JP14 | JP13 |
C8000 | 1100100 | Pins 1-2 | Pins 2-3 | Pins 2-3 | Pins 1-2 | Pins 2-3 | Pins 2-4 |
Note:Pins designated should be in the closed position. | |||||||
Binary one PROM size 8KB | Binary zero PROM size 8KB | Binary zero PROM size 16KB |
MISCELLANEOUS TECHNICAL NOTES |
The BIOS address settings range is C800 - E000 and is selected with JP12-19 using a binary translation. JP12 (LSB) and JP19 (MSB) are internal and assumed to be 0 and 1 respectively. JP13 - JP18 are set: pins 1-2 closed= 1; pins 2-3 closed= 0. Default is C8000: In addition to serving as the 2 1 place in the BIOS address selection, JP13 is also used to determine PROM size (8KB or 16KB). Due to the pin assignment a PROM cannot have an address with a 1 in the 2 1 place (such as 110001 1 0) and be 16KB (see above). |
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