AMERICAN RESEARCH CORPORATION ============================= 286 System Processor 80286 Processor Speed 8/10MHz Chip Set Unknown Max. Onboard 1MB DRAM Cache None BIOS ARC Dimensions 330mm x 218mm I/O Options EGA port, floppy drive interface, MIPS meter, parallel port, serial ports (2), ST506 hard drive interface NPU Options 80287 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Video monitor | CN1 | ST506 hard | CN7 | | port | | drive(control) | | |------------------+----------+-------------------+----------| | Parallel port | CN2 | Floppy drive | CN8 | | | | interface | | |------------------+----------+-------------------+----------| | Serial port 1 | CN3 | Speaker | CN9 | |------------------+----------+-------------------+----------| | Serial port 2 | CN4 | Keyboard | CN10 | |------------------+----------+-------------------+----------| | ST506 hard drive | CN5 | MIPS meter | CN11 | | two(data) | | | | |------------------+----------+-------------------+----------| | ST506 hard drive | CN6 | External battery | J16 | | one(data) | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper/Switch | Position | |----------------------------+---------------+---------------| |>> | BIOS type select 27128 | J1 | Open | |---+------------------------+---------------+---------------| | | BIOS type select 27256 | J1 | Closed | |---+------------------------+---------------+---------------| |>> | DRAM wait states | J2 | Closed | | | select zero | | | |---+------------------------+---------------+---------------| | | DRAM wait state select | J2 | Open | | | one | | | |---+------------------------+---------------+---------------| |>> | Monitor type select | J4 | pins 1 & 2 | | | EGA | | closed | |---+------------------------+---------------+---------------| | | Monitor type select | J4 | pins 2 & 3 | | | CGA or monochrome | | closed | |---+------------------------+---------------+---------------| |>> | Serial port COM1 | J5 | pins 2 & 3 | | | enabled | | closed | |---+------------------------+---------------+---------------| | | Serial port COM1 | J5 | pins 1 & 2 | | | disabled | | closed | |---+------------------------+---------------+---------------| |>> | Serial port COM2 | J6 | pins 2 & 3 | | | enabled | | closed | |---+------------------------+---------------+---------------| | | Serial port COM2 | J6 | pins 1 & 2 | | | disabled | | closed | |---+------------------------+---------------+---------------| |>> | Parallel port LPT1 | J7 | pins 2 & 3 | | | enabled | | closed | |---+------------------------+---------------+---------------| | | Parallel port LPT1 | J7 | pins 1 & 2 | | | disabled | | closed | |---+------------------------+---------------+---------------| |>> | Factory configured - | J8 | pins 1 & 2, 3 | | | do not alter | | & 4 closed | |---+------------------------+---------------+---------------| |>> | Factory configured - | J9 | pins 1 & 2 | | | do not alter | | closed | |---+------------------------+---------------+---------------| |>> | Monitor port starting | J11 | pins 1 & 2 | | | address select primary | | closed | |---+------------------------+---------------+---------------| | | Monitor port starting | J11 | pins 2 & 3 | | | address select | | closed | | | secondary | | | |---+------------------------+---------------+---------------| |>> | Factory configured - | J13 | Open | | | do not alter | | | |---+------------------------+---------------+---------------| |>> | Hard drive address | J14 | pins 1 & 3 | | | select primary | | closed | |---+------------------------+---------------+---------------| | | Hard drive address | J14 | pins 1 & 2 | | | select secondary | | closed | |---+------------------------+---------------+---------------| |>> | Floppy drive address | J14 | pins 5 & 6 | | | select primary | | closed | |---+------------------------+---------------+---------------| | | Floppy drive address | J14 | pins 4 & 6 | | | select secondary | | closed | |---+------------------------+---------------+---------------| |>> | Floppy drive type | J15 | pins 1 & 4 | | | select single speed | | open | |---+------------------------+---------------+---------------| | | Floppy drive type | J15 | pins 1 & 4 | | | select dual speed | | closed | |---+------------------------+---------------+---------------| |>> | Floppy drive write | J15 | pins 2 & 3 | | | precompensation select | | open | | | 125ns | | | |---+------------------------+---------------+---------------| | | Floppy drive write | J15 | pins 2 & 3 | | | precompensation select | | closed | | | 187ns | | | |---+------------------------+---------------+---------------| |>> | CPU speed select | J20 | pins 1 & 6 | | | switchable at turbo | | closed | | | switch | | | |---+------------------------+---------------+---------------| | | CPU speed select | J20 | pins 2 & 5 | | | switchable at keyboard | | closed | |---+------------------------+---------------+---------------| | | CPU speed select fast | J20 | pins 3 & 4 | | | | | closed | |---+------------------------+---------------+---------------| |>> | Monitor type select | J21 | pins 2 & 3 | | | color | | closed | |---+------------------------+---------------+---------------| | | Monitor type select | J21 | pins 1 & 2 | | | monochrome | | closed | |---+------------------------+---------------+---------------| |>> | Factory configured - | SW1/7 | Off | | | do not alter | | | |---+------------------------+---------------+---------------| |>> | Factory configured - | SW1/8 | Off | | | do not alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | J17 | |---------------------------------------------+--------------| | 512KB (disable memory above 512KB) | Closed | |---------------------------------------------+--------------| | 1MB (all memory is enabled) | Open | |------------------------------------------------------------| | Note:The system is factory configured with 1MB installed | | on-board. | +------------------------------------------------------------+ +------------------------------------------------------------+ | NPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | J18 | J19 | |------------------+--------------------+--------------------| | OSC Y1/3 | N/A | pins 2 & 3 closed | |------------------+--------------------+--------------------| | 5.3MHz | pins 2 & 3 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 8MHz | pins 1 & 2 closed | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SINGLE MONITOR SYSTEM SWITCH CONFIGURATION (PRIMARY | | MONITOR CONNECTED AT CN1) | |------------------------------------------------------------| | Monitor Type | SW1/1 | SW1/2 | SW1/3 | SW1/4 | |-----------------------+---------+--------+--------+--------| | Monochrome | Off | Off | On | Off | |-----------------------+---------+--------+--------+--------| | CGA 40 x 25 | On | Off | Off | On | |-----------------------+---------+--------+--------+--------| | CGA 80 x 25 | Off | Off | Off | On | |-----------------------+---------+--------+--------+--------| | EGA Low Resolution | On | On | On | Off | |-----------------------+---------+--------+--------+--------| | EGA High Resolution | Off | On | On | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | DUAL MONITOR SYSTEM SWITCH CONFIGURATION (PRIMARY MONITOR | | CONNECTED AT CN1) | |------------------------------------------------------------| | Primary | Secondary | SW1/1 | SW1/2 | SW1/3 | SW1/4 | |------------+------------+--------+--------+--------+-------| | Monochrome | CGA 40 x | On | Off | On | Off | | | 25 | | | | | |------------+------------+--------+--------+--------+-------| | Monochrome | CGA 80 x | Off | Off | On | Off | | | 25 | | | | | |------------+------------+--------+--------+--------+-------| | CGA 40 x | Monochrome | On | Off | Off | On | | 25 | | | | | | |------------+------------+--------+--------+--------+-------| | CGA 80 x | Monochrome | Off | Off | Off | On | | 25 | | | | | | |------------+------------+--------+--------+--------+-------| | EGA Low | Monochrome | On | On | On | Off | | Res | | | | | | |------------+------------+--------+--------+--------+-------| | EGA High | Monochrome | Off | On | On | Off | | Res | | | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DUAL MONITOR SYSTEM SWITCH CONFIGURATION (SECONDARY | | MONITOR CONNECTED AT CN1) | |------------------------------------------------------------| | Primary | Secondary | SW1/1 | SW1/2 | SW1/3 | SW1/4 | |------------+------------+--------+--------+--------+-------| | CGA 40 x | Monochrome | On | On | Off | On | | 25 | | | | | | |------------+------------+--------+--------+--------+-------| | CGA 80 x | Monochrome | Off | On | Off | On | | 25 | | | | | | |------------+------------+--------+--------+--------+-------| | Monochrome | CGA 40 x | On | On | On | On | | | 25 | | | | | |------------+------------+--------+--------+--------+-------| | Monochrome | CGA 80 x | Off | On | On | On | | | 25 | | | | | |------------+------------+--------+--------+--------+-------| | Monochrome | EGA Low | On | Off | On | On | | | Res | | | | | |------------+------------+--------+--------+--------+-------| | Monochrome | EGA High | Off | Off | On | On | | | Res | | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | PRIMARY MONITOR POWER-ON CONFIGURATION | |------------------------------------------------------------| | Monitor Type | Mode at Power-On | SW1/5 | SW1/6 | |--------------------+------------------+----------+---------| | Monochrome/CGA/EGA | MDA/Hercules | Off | On | |--------------------+------------------+----------+---------| | CGA/EGA | CGA | On | Off | |--------------------+------------------+----------+---------| | EGA | EGA | On | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | MONITOR MODE CONFIGURATION | |------------------------------------------------------------| | Setting | J10 | J12 | |----------------------------------+------------+------------| | Switchable by software using the | pins 2 & 3 | pins 2 & 3 | | utility AUTOMODE.COM | closed | closed | |----------------------------------+------------+------------| | CGA/EGA (AUTOMODE.COM utility | pins 1 & 2 | pins 1 & 2 | | cannot be used) | closed | closed | +------------------------------------------------------------+