UNIDENTIFIED
VLSI-286
|
Processor |
80286 |
|
Processor Speed |
12MHz |
|
Chip Set |
VLSI |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J3 |
Turbo switch |
J20 |
|
Speaker |
J18 |
Power LED & keylock |
J21 |
|
Reset switch |
J19 |
Turbo LED |
J22 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
JP1 |
Closed | |
|
Monitor type select monochrome |
JP1 |
Open | |
|
Battery type select internal |
J3 |
pins 2 & 3 closed | |
|
Battery type select external |
J3 |
Closed | |
|
BIOS wait state select 1 wait state |
JP6 |
Open | |
|
BIOS wait states select 2 wait states |
JP6 |
Closed | |
|
Oscillator select Y2 |
JP9 |
pins 1 & 2 closed | |
|
Oscillator select Y1 |
JP9 |
pins 2 & 3 closed | |
|
BIOS type select 27256 |
JP14 |
Closed | |
|
BIOS type select 27128 |
JP14 |
Open | |
|
DRAM wait state select 0 wait states |
JP13 |
Closed | |
|
DRAM wait state select 1 wait states |
JP13 |
Open | |
|
CPU speed select switchable at keyboard |
J20 |
pins 1 & 2 closed | |
|
CPU speed select forced high |
J20 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
P-0 |
Bank 1 |
P-1 |
Bank 2 |
Bank 3 |
|
512KB |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
NONE |
NONE |
|
640KB |
(4) 44256 |
(2) 41256 |
(16) 4164 |
(2) 4164 |
NONE |
NONE |
|
1MB |
(4) 44256 |
(2) 41256 |
NONE |
(2) 41256 |
(4) 44256 |
NONE |
|
2MB |
NONE |
(2) 411000 |
NONE |
NONE |
NONE |
(16) 411000 |
|
4MB |
NONE |
(2) 411000 |
(16) 411000 |
(2) 411000 |
NONE |
(16) 411000 |
|
DRAM JUMPER CONFIGURATION | |||
|
Size |
JP3 |
JP4 |
JP5 |
|
512KB |
Closed |
Closed |
Closed |
|
640KB |
Closed |
Closed |
Open |
|
1MB |
Closed |
Open |
Closed |
|
2MB |
Closed |
Open |
Open |
|
4MB |
Open |
Closed |
Closed |