UNIDENTIFIED ============ 80386 MOTHERBOARD (VER. 3.2) Processor 80386DX Processor Speed 16/20/25/30MHz Chip Set C & T Video Chip Set None Maximum Onboard Memory 16MB (8MB on external memory card) Maximum Video Memory None Cache Unidentified BIOS AMI/Award/Phoenix Dimensions 327mm x 218mm I/O Options External memory card, cache connector NPU Options 80287/80387DX +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | External battery | JP3 | Turbo LED | JP7 | |------------------+----------+-------------------+----------| | Turbo switch | JP4 | Cache memory | JP11 | | | | connector | | |------------------+----------+-------------------+----------| | Power LED & | JP5 | Reset switch | JP12 | | keylock | | | | |------------------+----------+-------------------+----------| | Speaker | JP6 | External memory | SL1 | | | | card | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |---------------------------------------+-------+------------| |>> | 8042 controller uses 23 pin | JP1 | Pins 1 & 2 | | | control | | closed | |---+-----------------------------------+-------+------------| | | Circuit speed select by pressing | JP1 | Pins 2 & 3 | | | CTRL, ALT + or - | | closed | |---+-----------------------------------+-------+------------| | | Monitor type select color/EGA/VGA | JP2 | Pins 1 & 2 | | | | | closed | |---+-----------------------------------+-------+------------| | | Monitor type select monochrome | JP2 | Pins 2 & 3 | | | | | closed | |---+-----------------------------------+-------+------------| | | Battery type select external | JP3 | Closed | |---+-----------------------------------+-------+------------| | | On board battery enabled | JP3 | Pins 1 & 2 | | | | | closed | |---+-----------------------------------+-------+------------| | | On board battery disabled | JP3 | Open | |---+-----------------------------------+-------+------------| | | CMOS memory clear | JP3 | Pins 3 & 4 | | | | | closed | |---+-----------------------------------+-------+------------| |>> | Factory configured - do not alter | JP8 | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Note: The size of the cache module is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | NPU SELECTION | |------------------------------------------------------------| | Type | JP9 | JP10 | |--------------------+--------------------+------------------| | None installed | Pins 1 & 2 closed | Open | |--------------------+--------------------+------------------| | 80287 | Pins 1 & 2 closed | Open | |--------------------+--------------------+------------------| | 80387 | Pins 2 & 3 closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |----------+------------+------------+-----------+-----------| | 2MB | 1MB | 1MB | None | None | |----------+------------+------------+-----------+-----------| | 2MB | None | None | 1MB | 1MB | |----------+------------+------------+-----------+-----------| | 8MB | None | None | 4MB | 4MB | |----------+------------+------------+-----------+-----------| | 8MB | 4MB | 4MB | None | None | |----------+------------+------------+-----------+-----------| | 16MB | 4MB | 4MB | 4MB | 4MB | |------------------------------------------------------------| | Note: The location of the banks are unidentified. The | | size of the chips are unidentified on the main board | | and memory card. Banks 1 & 2 are located on the main | | board. Banks 2 & 3 are located on the external memory | | card. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Setting | J1 | J2 | |------------------------+-----------------+-----------------| | No memory installed in | Pins 1 & 2, 4 & | Pins 1 & 2, 4 & | | main board | 5 closed | 5 closed | |------------------------+-----------------+-----------------| | Memory installed on | Pins 2 & 3, 5 & | Pins 2 & 3, 5 & | | main board | 6 closed | 6 closed | |------------------------------------------------------------| | Note: Either 2MB or 8MB will be installed on the memory | | card. | +------------------------------------------------------------+