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 |