PC BRAND
HI-PERFORMANCE SYSTEM
|
Processor |
80386DX/80486SX/80486DX (depends on CPU card installed) |
|
Processor Speed |
20/33MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB (on external CPU card) |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Parallel port, serial ports (2), floppy drive interface, IDE interface, CPU expansion slot, riser slot |
|
NPU Options |
80387DX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port 2 |
J2 |
External battery |
J10 |
|
Serial port 1 |
J3 |
Speaker |
J13 |
|
Parallel port |
J4 |
Power LED & keylock |
J23 |
|
Auxiliary speaker |
J5 |
Riser Card |
SL1 |
|
IDE interface |
J8 |
CPU expansion slot |
SL2 |
|
Floppy drive interface |
J9 |
Reset switch |
SW1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
J11 |
N/A |
|
|
On board RAM 256KB to 640KB enabled |
JP1 |
pins 1 & 2 open |
|
On board RAM 256KB to 640KB disabled |
JP1 |
pins 1 & 2 closed | |
|
|
On board RAM 512KB to 640KB enabled |
JP1 |
pins 3 & 4 open |
|
On board RAM 512KB to 640KB disabled |
JP1 |
pins 3 & 4 closed | |
|
|
Security lock disabled |
JP1 |
pins 5 & 6 closed |
|
Security lock enabled |
JP1 |
pins 5 & 6 open | |
|
|
Floppy drive interface enabled |
JP2 |
pins 1 & 2 closed |
|
Floppy drive interface disabled |
JP2 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP2 |
JP3 |
|
32KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
256KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Note: The location of jumpers JP2 & JP3 are unidentified. | ||
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP2 |
JP3 |
|
32KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
128KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
256KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Note: The location of jumpers JP2 & JP3 are unidentified. | ||
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The location of pin 1 is unidentified. |