UNIDENTIFIED
12MHZ TURBO XT MAINBOARD
|
Processor |
8088 |
|
Processor Speed |
12MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
640KB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED |
CN3 |
Power LED & keylock |
CN6 |
|
Reset switch |
CN4 |
Turbo LED |
CN7 |
|
Speaker |
CN5 |
Turbo switch |
CN8 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
» |
Memory wait state select 0 wait states |
J6 |
Open |
|
Memory wait state select 1 wait state |
J6 |
Closed | |
|
» |
Parity check disabled |
SW/1 |
On |
|
Parity check enabled |
SW/1 |
Off | |
|
» |
Factory configured - do not alter |
SW/2 |
On |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
256KB |
(2) 414256 & (1) 41256 |
NONE |
NONE |
|
512KB |
(2) 414256 & (1) 41256 |
(2) 414256 & (1) 41256 |
NONE |
|
640KB |
(2) 414256 & (1) 41256 |
(2) 414256 & (1) 41256 |
(2) 414256 & (1) 41256 |
|
DRAM SWITCH CONFIGURATION | ||
|
Size |
SW/3 |
SW/4 |
|
256KB |
Off |
On |
|
512KB |
On |
Off |
|
640KB |
Off |
Off |
|
MONITOR DISPLAY CONFIGURATION | ||
|
Display |
SW/5 |
SW/6 |
|
Color (40 x 25) |
Off |
On |
|
Color (80 x 25) |
On |
Off |
|
Monochrome |
Off |
Off |
|
FLOPPY DRIVE CONFIGURATION | ||
|
Drives installed |
SW/7 |
SW/8 |
|
1 |
On |
On |
|
2 |
Off |
On |
|
3 |
On |
Off |
|
4 |
Off |
Off |