FIRST INTERNATIONAL COMPUTER, INC. ================================== 486VC-H (REV. A1) Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 16/20/25/33/40/50(internal)/50/66(internal)MHz Chip Set VT Max. Onboard 128MB DRAM SRAM Cache 64/128/256KB BIOS Award Dimensions 289.8mm x 218.4mm I/O Options None NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------+----------+---------------------+----------| | Turbo LED | J6 | Speaker | J9 | |----------------+----------+---------------------+----------| | Turbo switch | J7 | Power LED & keylock | J10 | |----------------+----------+---------------------+----------| | Reset switch | J8 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |-----------------------------------+-----------+------------| |>> | CMOS memory normal operation | J1 | open | |---+-------------------------------+-----------+------------| | | CMOS memory clear | J1 | closed | |---+-------------------------------+-----------+------------| |>> | Monitor type select | J2 | open | | | monochrome | | | |---+-------------------------------+-----------+------------| | | Monitor type select color | J2 | closed | |---+-------------------------------+-----------+------------| |>> | CPU speed select OSC1/1 | JK1 & JK2 | pins 2 & 3 | | | | | closed | |---+-------------------------------+-----------+------------| | | CPU speed select OSC1/2 | JK1 & JK2 | pins 1 & 2 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 1MB | (4) 256K x 9 | NONE | |------------------+--------------------+--------------------| | 2MB | (4) 256K x 9 | (4) 256K x 9 | |------------------+--------------------+--------------------| | 4MB | (4) 1M x 9 | NONE | |------------------+--------------------+--------------------| | 5MB | (4) 256K x 9 | (4) 1M x 9 | |------------------+--------------------+--------------------| | 5MB | (4) 1M x 9 | (4) 256K x 9 | |------------------+--------------------+--------------------| | 8MB | (4) 1M x 9 | (4) 1M x 9 | |------------------+--------------------+--------------------| | 16MB | (4) 4M x 9 | NONE | |------------------+--------------------+--------------------| | 17MB | (4) 256K x 9 | (4) 4M x 9 | |------------------+--------------------+--------------------| | 17MB | (4) 4M x 9 | (4) 256K x 9 | |------------------+--------------------+--------------------| | 20MB | (4) 4M x 9 | (4) 1M x 9 | |------------------+--------------------+--------------------| | 32MB | (4) 4M x 9 | (4) 4M x 9 | |------------------+--------------------+--------------------| | 64MB | (4) 16M x 9 | NONE | |------------------+--------------------+--------------------| | 65MB | (4) 16M x 9 | (4) 256K x 9 | |------------------+--------------------+--------------------| | 68MB | (4) 16M x 9 | (4) 4M x 9 | |------------------+--------------------+--------------------| | 80MB | (4) 16M x 9 | (4) 4M x 9 | |------------------+--------------------+--------------------| | 128MB | (4) 16M x 9 | (4) 16M x 9 | +------------------------------------------------------------+ +------------------------------------------------------------+ | SRAM CONFIGURATION | |------------------------------------------------------------| | Size | Cache | Location | TAG/Dirty | JS1 | JS2 | | | SRAM | | Bit | | | |-------+----------+----------+------------+--------+--------| | 64KB | (8) 8K x | Banks 0 | (2) 8K x 8 | pins 1 | pins 1 | | | 8 | & 1 | | & 2 | & 2 | |-------+----------+----------+------------+--------+--------| | 128KB | (4) 32K | Bank 0 | (2) 8K x 8 | pins 1 | pins 2 | | | x 8 | | | & 2 | & 3 | |-------+----------+----------+------------+--------+--------| | 256KB | (8) 32K | Banks 0 | (2) 32K x | pins 2 | pins 2 | | | x 8 | & 1 | 8 | & 3 | & 3 | |------------------------------------------------------------| | Note:Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | CPU Type | JC1 | JC2 | JC3 | |----------+----------------+----------------+---------------| | 80486DX2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |----------+----------------+----------------+---------------| | 80486DX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |----------+----------------+----------------+---------------| | 80487SX | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | |----------+----------------+----------------+---------------| | 80486SX | pins 2 & 3 | pins 2 & 3 | open | | | closed | closed | | +------------------------------------------------------------+