MANDAX COMPUTER, INC.
286 MAINBOARD
|
Processor |
80286 |
|
Processor Speed |
6/12MHz |
|
Chip Set |
Unknown |
|
Max. Onboard DRAM |
4MB |
|
SRAM Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330.2mm x 218.4mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Digital CPU speed display |
J1 |
Speaker |
JP7 |
|
External battery |
J15 |
Turbo LED |
JP10 |
|
Power LED & keylock |
JP4 |
Reset switch |
JP11 |
|
Turbo switch |
JP5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Monitor type select monochrome |
JP1 |
pins 1 & 2 closed | |
|
Monitor type select color |
JP1 |
pins 2 & 3 closed | |
|
NPU disabled |
JP2 |
pins 2 & 3 closed | |
|
NPU enabled |
JP2 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP3 |
closed | |
|
RTC type select alkaline |
JP6 |
pins 2 & 3 closed | |
|
RTC type select lithium |
JP6 |
pins 1 & 2 closed | |
|
I/O speed select 6MHz |
JP8 |
open | |
|
I/O speed select synchronous with CPU clock |
JP8 |
closed | |
|
Wait states select switchable at keyboard |
JP9 |
pins 1 & 2 closed | |
|
Wait state select one |
JP9 |
open | |
|
Wait states select zero |
JP9 |
pins 2 & 3 closed | |
|
BIOS type select 27256 |
JP12 |
pins 2 & 3 closed | |
|
BIOS type select 27512 |
JP12 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
SW1/switch 1 |
open | |
|
Monitor type select color |
SW1/switch 1 |
closed | |
|
DRAM CONFIGURATION | |||||
|
Size |
Bank 0 |
Bank 1 |
SW1/switch 2 |
SW1/switch 3 |
SW1/switch 4 |
|
512KB |
(18) 41256 |
NONE |
closed |
closed |
open |
|
640KB |
(18) 41256 |
(18) 4164 |
closed |
open |
closed |
|
1MB |
(18) 41256 |
(18) 41256 |
closed |
open |
open |
|
2MB |
(18) 411000 |
NONE |
open |
open |
closed |
|
4MB |
(18) 411000 |
(18) 411000 |
open |
open |
open |