AST RESEARCH, INC.
PREMIUM WORKSTATION/286
|
Processor |
80286 |
|
Processor Speed |
10MHz |
|
Chip Set |
AST |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AST |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive controller module, IDE interface, parallel port, serial ports (2), video controller module |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Parallel port |
CN1 |
IDE interface |
J2 |
|
Serial port 2 (COM2) |
CN2 |
Floppy drive controller module |
J3 |
|
Serial port 1 (COM1) |
CN3 |
External battery |
J6 |
|
Riser card |
CN4 |
Optional ROM (odd) |
U56 |
|
Video port |
CN5 |
Optional ROM (even) |
U65 |
|
Front panel switches & LEDs |
J1 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
BIOS type select 27128 |
JP7 |
pins 1 & 2 closed | |
|
BIOS type select 27256 |
JP7 |
pins 2 & 3 closed | |
|
Factory configured - do not alter |
JP8 |
open | |
|
Note:Jumper JP8 may not be present on all board revisions. | |||
|
DRAM CONFIGURATION | |||
|
Size |
Jumpers JP1 through JP6 |
Bank 0 |
Bank 1 |
|
512KB |
pins 1 & 2 closed |
(2) 256K x 9 |
NONE |
|
1MB |
pins 1 & 2 closed |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
pins 2 & 3 closed |
(2) 1M x 9 |
NONE |
|
4MB |
pins 2 & 3 closed |
(2) 1M x 9 |
(2) 1M x 9 |