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 |