UNIDENTIFIED
TURBO MAIN BOARD
Processor |
8088 |
Processor Speed |
8MHz |
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 |
Reset switch |
JP1 |
Turbo LED |
P6 pins 1 & 2 |
Turbo LED |
P3 |
Reset switch |
P6 pins |
Speaker |
P4 |
Keylock |
P6 pins |
Turbo switch |
P5 |
Turbo LED |
P7 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper/Switch |
Position | |
» |
Turbo enabled |
P5 |
pins 1 & 2 closed |
Turbo disabled |
P5 |
pins 3 & 4 closed | |
» |
Turbo enabled |
SW2/1 |
Off |
Turbo disabled |
SW2/1 |
On | |
» |
NPU disabled |
SW2/2 |
On |
NPU enabled |
SW2/2 |
Off |
DRAM CONFIGURATION | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
64KB |
(9) 4164 |
NONE |
NONE |
NONE |
128KB |
(9) 4164 |
(9) 4164 |
NONE |
NONE |
192KB |
(9) 4164 |
(9) 4164 |
(9) 4164 |
NONE |
256KB |
(9) 4164 |
(9) 4164 |
(9) 4164 |
(9) 4164 |
256KB |
(9) 41256 |
NONE |
NONE |
NONE |
640KB |
(9) 41256 |
(9) 41256 |
(9) 4164 |
(9) 4164 |
DRAM SWITCH CONFIGURATION | ||
Size |
SW2/3 |
SW2/4 |
64KB |
On |
On |
128KB |
Off |
On |
192KB |
Off |
On |
256KB |
Off |
Off |
640KB |
Off |
Off |
DRAM SWITCH CONFIGURATION | |
Size |
JP2 |
Bank 0 & 1 = 41256 |
Closed |
Bank 2 & 3 = 4164 |
Closed |
DRAM SWITCH CONFIGURATION | |
Size |
JP2 |
Bank 0 & 1 = 4164 |
Open |
Bank 2 & 3 = 4164 |
Open |
MONITOR CONFIGURATION | ||
Type |
SW2/5 |
SW2/6 |
Monochrome |
Off |
Off |
40 x 25 color |
Off |
On |
80 x 25 color |
On |
Off |
FLOPPY DRIVE CONFIGURATION | ||
Type |
SW2/7 |
SW2/8 |
1 |
On |
On |
2 |
Off |
On |
3 |
On |
Off |
4 |
Off |
Off |