ULTRASTOR CORPORATION
12F/12
|
Data Bus |
16-bit ISA |
|
Card Size |
Three-quarter length, half-height card |
|
Hard Drives supported |
Two ESDI drives |
|
Floppy drives supported |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
|
CONNECTIONS | |||
|
Function |
Location |
Function |
Location |
|
34-pin cable connector - floppy drive |
J1 |
20-pin cable connector - drive 0 |
J4 |
|
4-pin connector - drive active LED |
J2 |
34-pin control cable connector - hard drive |
J5 |
|
20-pin cable connector - drive 1 |
J3 |
|
|
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Factory configured - do not alter |
JP1 |
Unidentified | |
|
Factory configured - do not alter |
JP3 |
Closed | |
|
On-board cache enabled |
JP4 |
Open | |
|
On-board cache disabled |
JP4 |
Pins 3 & 4 closed | |
|
Factory configured - do not alter |
JP9 |
Open | |
|
Third floppy drive with twisted cable - jumper drive as DS2 |
JP11/1 |
Open | |
|
Third floppy drive with straight cable - jumper drive as DS4 |
JP11/1 |
Closed | |
|
Drive 1 AT configured |
JP11/2 |
Open | |
|
Drive 1 3.5 inch PS/2 configured (different pin 2 polarity) |
JP11/2 |
Closed | |
|
Drive 0 AT configured |
JP11/3 |
Open | |
|
Drive 0 3.5 inch PS/2 configured (different pin 2 polarity) |
JP11/3 |
Closed | |
|
Floppy drive primary address is 3F0h |
JP11/4 |
Open | |
|
Floppy drive secondary address is 370h |
JP11/4 |
Closed | |
|
Single speed floppy drive enabled |
JP11/5 |
Open | |
|
Dual speed floppy drive enabled |
JP11/5 |
Closed | |
|
Precomp varies according to floppy data rate |
JP11/6 |
Open | |
|
Precomp is 125 ns |
JP11/6 |
Closed | |
|
Hard drive primary address select (1F0-1F7h) |
JP12 |
Open | |
|
Hard drive secondary address select (170-177h) |
JP12 |
Closed | |
|
USER CONFIGURABLE SETTINGS (CONTINUED) | |||
|
Function |
Label |
Position | |
|
Chassis ground not connected to logic ground |
JP16 |
Open | |
|
Chassis ground connected to logic ground |
JP16 |
Closed | |
|
Floppy interface disabled |
JP17 |
Open | |
|
Floppy interface enabled |
JP17 |
Closed | |
|
IRQ 14 select |
JP20 |
Pins 2 & 3 closed | |
|
IRQ 15 select |
JP20 |
Pins 1 & 2 closed | |
|
Note: Jumpers JP1 and JP9 are removed on revision B00. Location of jumper JP16 is unidentified. | |||
|
CACHE CONFIGURATION | |||
|
Data buffer |
JP5 |
JP6 | |
|
8KB |
Pins 2 & 3 closed |
Pins 1 & 2 closed | |
|
32KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed | |
|
BIOS ADDRESS SELECTION | ||||
|
Address |
JP10/pins 1 & 2 |
JP10/pins 3 & 4 |
JP10/pins 5 & 6 | |
|
C8000h |
Open |
Open |
Closed | |
|
CC000h |
Open |
Closed |
Open | |
|
D0000h |
Open |
Closed |
Closed | |
|
D4000h |
Closed |
Open |
Open | |
|
D8000h |
Closed |
Open |
Closed | |
|
DC000h |
Closed |
Closed |
Open | |
|
Disabled |
Open |
Open |
Open | |