UNIDENTIFIED
TURBO MAINBOARD
|
Processor |
8088 |
|
Processor Speed |
4.77/10MHz |
|
Chip Set |
None |
|
Max. onboard DRAM |
640KB |
|
SRAM Cache |
None |
|
BIOS |
Unknown |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
8087 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
JP1 |
Power LED |
JP5/1 & 2 |
|
Keylock |
JP3 |
Turbo LED |
JP5/3 & 4 |
|
Reset switch |
JP4 |
Turbo Switch |
JP6 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Factory configured - do not alter |
JP7 |
N/A | |
|
Factory configured - do not alter |
JP8 |
N/A | |
|
Parity enabled |
JP9 |
Closed | |
|
Parity disabled |
JP9 |
Open | |
|
Factory configured - do not alter |
SW1/switch 1 |
Off | |
|
NPU enabled |
SW1/switch 2 |
Off | |
|
NPU disabled |
SW1/switch 2 |
On | |
|
Factory configured - do not alter |
SW1/switch 3 |
N/A | |
|
Factory configured - do not alter |
SW1/switch 4 |
N/A | |
|
DRAM CONFIGURATION | ||||||||
|
Size |
Bank 0 |
Parity 0 |
Bank 1 |
Parity 1 |
Bank 2 |
Parity 2 |
Bank 3 |
Parity 3 |
|
256KB |
(8)41256 |
(1)41256 |
NONE |
NONE |
NONE |
NONE |
NONE |
NONE |
|
256KB |
(2)44256 |
(1)41256 |
NONE |
NONE |
NONE |
NONE |
NONE |
NONE |
|
512KB |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
NONE |
NONE |
NONE |
NONE |
|
512KB |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
NONE |
NONE |
NONE |
NONE |
|
576KB |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
NONE |
NONE |
|
576KB |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
NONE |
NONE |
|
640KB |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
(8)41256 |
(1)41256 |
|
640KB |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
(2)44256 |
(1)41256 |
|
Note:When using 44256 or 4464 chips, insert the chips into the dual-size sockets. | ||||||||
|
DISPLAY CONFIGURATION | ||
|
Type |
SW1/switch 5 |
SW1/switch 6 |
|
Enhanced graphics adapter |
On |
On |
|
Color/graphics (40 x 20 mode) |
Off |
On |
|
Color/graphics (80 x 25 mode) |
On |
Off |
|
Monochrome display adapter or both |
Off |
Off |
|
DRIVE CONFIGURATION | ||
|
Numper of Installed Drives |
SW1/switch 7 |
SW1/switch 8 |
|
1 Drive installed |
On |
On |
|
2 Drives installed |
Off |
On |
|
3 Drives installed |
On |
Off |
|
4 Drives installed |
Off |
Off |