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 |