UNIDENTIFIED
TURBO 640
|
Processor |
8088 |
|
Processor Speed |
8MHz |
|
Chip Set |
None |
|
Max. onboard DRAM |
640KB |
|
Cache |
None |
|
BIOS |
Unknown |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
JP5 |
Power/Turbo LED |
JP9 |
|
Keylock |
JP8 |
Speaker |
P4 |
|
Note:The exact locations of JP5 and JP8 are unknown. | |||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Factory configured - do not alter |
JP1 |
Unknown | |
|
Factory configured - do not alter |
SW1/switch 1 |
Off | |
|
NPU enabled |
SW1/switch 2 |
Off | |
|
NPU disabled |
SW1/switch 2 |
On | |
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
JP3 |
JP4 |
|
256KB |
(8) 4164 |
(8) 4164 |
(8) 4164 |
(8) 4164 |
A & B closed |
B closed |
|
256KB |
(8) 41256 |
NONE |
NONE |
NONE |
C & D closed |
A closed |
|
512KB |
(8) 41256 |
(8) 41256 |
NONE |
NONE |
C & D closed |
A closed |
|
640KB |
(8) 41256 |
(8) 41256 |
(8) 4164KB |
(8) 4164KB |
C & D closed |
A closed |
|
TURBO CONFIGURATION | ||
|
Mode |
JP6 |
JP7 |
|
Software switch |
Open |
Closed |
|
Hardware switch |
Closed |
Open |
|
DISPLAY CONFIGURATION | ||||
|
Display Adapter |
SW1/5 |
SW1/6 |
SW1/7 |
SW1/8 |
|
None |
On |
On |
N/A |
N/A |
|
Color/Graphics (40x20) |
Off |
On |
On |
On |
|
Color/Graphics (80x25) |
On |
Off |
On |
On |
|
Monochrome or Both |
Off |
Off |
On |
On |
|
FLOPPY DRIVE CONFIGURATION | ||
|
Drives Installed |
SW1/7 |
SW1/8 |
|
1 |
On |
On |
|
2 |
Off |
On |
|
3 |
On |
Off |
|
4 |
Off |
Off |