UNIDENTIFIED
HT 12 286
|
Processor |
80286 |
|
Processor Speed |
12/16MHz |
|
Chip Set |
Headland |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
JP2 |
Speaker |
JP5 |
|
Turbo LED |
JP3 |
Power LED & keylock |
JP6 |
|
Reset switch |
JP4 |
External battery |
JP10 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP1 |
N/A | |
|
BIOS type select 27512 |
JP7 |
pins 1 & 2 closed | |
|
BIOS type select 27256 |
JP7 |
pins 2 & 3 closed | |
|
NPU mode select synchronous with CPU |
JP8 |
pins 2 & 3 closed | |
|
NPU mode select synchronous with oscillator installed at Y1 |
JP8 |
pins 1 & 2 closed | |
|
NPU speed select source/1 |
JP9 |
pins 1 & 2 closed | |
|
NPU speed select source/3 |
JP9 |
pins 2 & 3 closed | |
|
CPU speed select 16MHz |
JP11 |
pins 2 & 3 closed | |
|
CPU speed select 12MHz |
JP11 |
pins 1 & 2 closed | |
|
Monitor type select color |
JP12 |
Closed | |
|
Monitor type select monochrome |
JP12 |
Open | |
|
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 |
(4) 4464 |
(2) 41256 |
NONE |
NONE |
|
1MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
|
2MB |
NONE |
NONE |
NONE |
NONE |
(2) 1M x 9 |
NONE |
|
4MB |
NONE |
NONE |
NONE |
NONE |
(2) 1M x 9 |
(2) 1M x 9 |