UNIDENTIFIED
SUPER TURBO-XT
Processor | 8088 (exact location is unknown) |
Processor Speed | 4.77/12MHz |
Chip Set | Unidentified |
Max. Onboard DRAM | 1MB |
Cache | None |
BIOS | Unidentified |
Dimensions | 220mm x 220mm |
I/O Options | None |
NPU Options | 8087(exact location is unknown) |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED | CN3 | Keylock | CN6 |
Reset switch | CN4 | Turbo LED | CN7 |
Speaker | CN5 | Turbo switch | CN8 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | CPU type select NEC V20 | J5 | Closed |
CPU type select 8088 | J5 | Open | |
» | RAM wait state select 0 wait state | J6 | Closed |
RAM wait state select 1 wait state | J6 | Open | |
» | ROM wait state select 0 wait state | J7 | Closed |
ROM wait state select 1 wait state | J7 | Open | |
» | Factory configured - do not alter | J8 | Closed |
» | Parity check disabled | SW1/1 | On |
Parity check disabled | SW1/1 | Off | |
» | NPU disabled | SW1/2 | On |
NPU enabled | SW1/2 | Off |
DRAM CONFIGURATION | |||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 |
256KB | (2) 414256 | NONE | NONE | NONE | NONE |
512KB | (2) 414256 | (2) 414256 | NONE | NONE | NONE |
640KB | (2) 414256 | (2) 414256 | (4) 41464 | NONE | NONE |
1MB | (2) 414256 | (2) 414256 | NONE | (2) 414256 | (2) 414256 |
DRAM CONFIGURATION (PARITY) | |||||
Size | Parity 0 | Parity 1 | Parity 2 | Parity 3 | Parity 4 |
256KB | (1) 41256 | NONE | NONE | NONE | NONE |
512KB | (1) 41256 | (1) 841256 | NONE | NONE | NONE |
640KB | (1) 41256 | (1) 41256 | (2) 4164 | NONE | NONE |
1MB | (1) 41256 | (1) 41256 | NONE | (1) 41256 | (1) 41256 |
Note:If SW1 is disabled, parity chips are not needed. |
DRAM SWITCH CONFIGURATION | ||
Size | SW1/3 | SW1/4 |
0KB | On | On |
256KB | Off | On |
512KB | Off | On |
640KB | On | Off |
1MB | Off | Off |
MONITOR CONFIGURATION | ||
Type | SW1/5 | SW1/6 |
None installed | On | On |
Monochrome | Off | Off |
VGA (40 x 25) | Off | On |
VGA (80 x 25) | On | Off |
Note: Without ERSO BIOS 3301 installed. |
MONITOR CONFIGURATION | ||
Type | SW1/5 | SW1/6 |
Monochrome | On | On |
VGA (40 x 25) | Off | On |
VGA (80 x 25) | On | Off |
Note: With ERSO BIOS 3301 installed. |
DISK DRIVE CONFIGURATION | ||
Drives installed | SW1/7 | SW1/8 |
1 | On | On |
2 | Off | On |
3 | On | Off |
4 | Off | Off |