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 |