UNIDENTIFIED
640K SYSTEM BOARD
|
Processor |
8088 |
|
Processor Speed |
10MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
640KB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
JP1 |
Speaker |
JP2C |
|
Turbo LED |
JP2A |
Reset switch |
JP2D |
|
Power LED & keylock |
JP2B | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Switch |
Position | |
|
» |
Factory configured - do not alter |
SW1/1 |
Off |
|
» |
NPU disabled |
SW1/2 |
On |
|
NPU enabled |
SW1/2 |
Off | |
|
» |
Factory configured - do not alter |
SW1/3 |
Off |
|
» |
Factory configured - do not alter |
SW1/4 |
Off |
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 2A |
Bank 3 |
Bank 3A |
|
256KB |
(9) 41256 |
NONE |
NONE |
NONE |
NONE |
NONE |
|
512KB |
(9) 41256 |
(9) 41256 |
NONE |
NONE |
NONE |
NONE |
|
576KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
NONE |
NONE |
|
640KB |
(9) 41256 |
(9) 41256 |
(2) 4464 |
(1) 4164 |
(2) 4464 |
(1) 4164 |
|
DISPLAY ADAPTER SWITCH CONFIGURATION | ||
|
Size |
SW1/5 |
SW1/6 |
|
None installed |
On |
On |
|
Color (40 x 20) |
Off |
On |
|
Color (80 x 25) |
On |
Off |
|
Monochrome |
Off |
Off |
|
FLOPPY DRIVE SWITCH CONFIGURATION | ||
|
Drives installed |
SW1/7 |
SW1/8 |
|
1 |
On |
On |
|
2 |
Off |
On |
|
3 |
On |
Off |
|
4 |
Off |
Off |