GIGA-BYTE TECHNOLOGY CO., INC. ============================== GA-486VS REV.8C Processor CX486M6/AM486/80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set SIS Max. 128MB Onboard DRAM Cache 64/128/256/512KB BIOS Award Dimensions 230mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | External battery | J1 | Power LED & | J7 | | | | keylock | | |------------------+----------+-------------------+----------| | Turbo switch | J3 | Green PC | JP33 | | | | connector | | |------------------+----------+-------------------+----------| | Turbo LED | J4 | Green PC LED | JP34 | | | | connector | | |------------------+----------+-------------------+----------| | Speaker | J5 | 32-bit VESA local | S1 - S3 | | | | bus slots | | |------------------+----------+-------------------+----------| | Reset switch | J6 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | CPU type select all CPU's | JP11 | Closed | |---+----------------------------------+--------+------------| | | CPU type select AMD CPU only | JP11 | Open | |---+----------------------------------+--------+------------| |>> | CMOS memory normal operation | JP16 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CMOS memory clear | JP16 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Monitor type select CGA | JP17 | Closed | |---+----------------------------------+--------+------------| | | Monitor type select all others | JP17 | Open | |---+----------------------------------+--------+------------| |>> | CPU type select all CPU types | JP21 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | CPU type select Cyrix, P24D, AMD | JP21 | pins 1 & 2 | | | enhanced CPU only | | closed | |---+----------------------------------+--------+------------| |>> | Green PC normal operation | JP26 | Open | |---+----------------------------------+--------+------------| | | Green PC green mode | JP26 | Closed | |---+----------------------------------+--------+------------| |>> | Cache type select write through | JP30 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | Cache type select write back | JP30 | pins 1 & 2 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+---------------+-------------+------------+----------| | 1MB | (1) 256K x 36 | NONE | NONE | NONE | |------+---------------+-------------+------------+----------| | 2MB | (1) 256K x 36 | (1) 256K x | NONE | NONE | | | | 36 | | | |------+---------------+-------------+------------+----------| | 2MB | (1) 512K x 36 | NONE | NONE | NONE | |------+---------------+-------------+------------+----------| | 4MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | NONE | | | | 36 | 36 | | |------+---------------+-------------+------------+----------| | 4MB | (1) 512K x 36 | (1) 512K x | NONE | NONE | | | | 36 | | | |------+---------------+-------------+------------+----------| | 4MB | (1) 1M x 36 | NONE | NONE | NONE | |------+---------------+-------------+------------+----------| | 5MB | (1) 256K x 36 | (1) 1M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 6MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | NONE | | | | 36 | 36 | | |------+---------------+-------------+------------+----------| | 6MB | (1) 512K x 36 | (1) 1M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 8MB | (1) 256K x 36 | (1) 256K x | (1) 512K x | (1) 1M x | | | | 36 | 36 | 36 | |------+---------------+-------------+------------+----------| | 8MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | NONE | | | | 36 | 36 | | |------+---------------+-------------+------------+----------| | 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 8MB | (1) 2M x 36 | NONE | NONE | NONE | |------+---------------+-------------+------------+----------| | 10MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | (1) 1M x | | | | 36 | 36 | 36 | |------+---------------+-------------+------------+----------| | 12MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | (1) 1M x | | | | 36 | 36 | 36 | |------+---------------+-------------+------------+----------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE | | | | | 36 | | |------+---------------+-------------+------------+----------| | 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+---------------+-------------+------------+----------| | 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 16MB | (1) 4M x 36 | NONE | NONE | NONE | |------+---------------+-------------+------------+----------| | 17MB | (1) 256K x 36 | (1) 4M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 18MB | (1) 256K x 36 | (1) 256K x | (1) 4M x | NONE | | | | 36 | 36 | | |------+---------------+-------------+------------+----------| | 18MB | (1) 512K x 36 | (1) 4M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 20MB | (1) 512K x 36 | (1) 512K x | (1) 4M x | NONE | | | | 36 | 36 | | |------+---------------+-------------+------------+----------| | 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE | |------+---------------+-------------+------------+----------| | 24MB | (1) 512K x 36 | (1) 512K x | (1) 1M x | (1) 4M x | | | | 36 | 36 | 36 | |------+---------------+-------------+------------+----------| | 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE | | | | | 36 | | |------+---------------+-------------+------------+----------| | 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | NONE | | | | | 36 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |-------+-------------+------------+------------+------------| | 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 32MB | (1) 8M x 36 | NONE | NONE | NONE | |-------+-------------+------------+------------+------------| | 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 36MB | (1) 1M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 40MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 64MB | (1) 16M x | NONE | NONE | NONE | | | 36 | | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 65MB | (1) 256K x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 68MB | (1) 1M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 72MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 80MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 96MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 128MB | (1) 16M x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |-------+--------------+-------------+-----------------------| | 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | |-------+--------------+-------------+-----------------------| | 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | |-------+--------------+-------------+-----------------------| | 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K x 8 or (1) | | | | | 32K x 8 | |-------+--------------+-------------+-----------------------| | 256KB | (4) 64K x 8 | NONE | (1) 16K x 8 or (1) | | | | | 32K x 8 | |-------+--------------+-------------+-----------------------| | 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP1 | JP2 | JP3 | JP4 | |---------+----------+---------+---------+-------------------| | 64KB | Open | Open | Open | N/A | |---------+----------+---------+---------+-------------------| | 128KB | Closed | Open | Open | pins 1 & 2 closed | |---------+----------+---------+---------+-------------------| | 256KB | Closed | Closed | Open | pins 2 & 3 closed | |---------+----------+---------+---------+-------------------| | 256KB | Closed | Closed | Open | pins 1 & 2 closed | |---------+----------+---------+---------+-------------------| | 512KB | Closed | Closed | Closed | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP24 | |----------------------------+-------------------------------| | CX486M6 | pins 2 & 3 closed | |----------------------------+-------------------------------| | AM486SL | pins 2 & 5 closed | |----------------------------+-------------------------------| | P24D | pins 2 & 5 closed | |----------------------------+-------------------------------| | AM486DX4 2x | pins 3 & 4 closed | |----------------------------+-------------------------------| | AM486DX4 3x | pins 3 & 4 open | |----------------------------+-------------------------------| | 80486DX4 2x | pins 3 & 4 closed | |----------------------------+-------------------------------| | 80486DX4 3x | pins 3 & 4 open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP8 | JP18 | |--------------------+--------------------+------------------| | CX486M6 | N/A | Open | |--------------------+--------------------+------------------| | 80486SX | pins 2 & 3 closed | Closed | |--------------------+--------------------+------------------| | 80486DX | pins 1 & 2 closed | Closed | |--------------------+--------------------+------------------| | 80486DX2 | pins 1 & 2 closed | Closed | |--------------------+--------------------+------------------| | 80486DX4 | pins 1 & 2 closed | Closed | |--------------------+--------------------+------------------| | Pentium Overdrive | pins 1 & 2 closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP5 | JP6 | JP7 | JP29 | |-------------------+----------+---------+---------+---------| | 25MHz | Open | Open | Closed | Open | |-------------------+----------+---------+---------+---------| | 33MHz | Closed | Closed | Closed | Open | |-------------------+----------+---------+---------+---------| | 40MHz | Open | Closed | Closed | Closed | |-------------------+----------+---------+---------+---------| | 50iMHz | Open | Open | Closed | Open | |-------------------+----------+---------+---------+---------| | 50MHz | Closed | Open | Open | Closed | |-------------------+----------+---------+---------+---------| | 66iMHz | Closed | Closed | Closed | Open | |-------------------+----------+---------+---------+---------| | 75i (40 x 2) MHz | Open | Closed | Closed | Closed | |-------------------+----------+---------+---------+---------| | 75i (25 x 3) MHz | Open | Open | Closed | Open | |-------------------+----------+---------+---------+---------| | 100i (50 x 2) MHz | Closed | Open | Open | Closed | |-------------------+----------+---------+---------+---------| | 100i (33 x 3) MHz | Closed | Closed | Closed | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Function | JP36 | JP37 | |--------------------+-------------------+-------------------| | 3.3 v | Open | Open | |--------------------+-------------------+-------------------| | 5 v | Closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOLTAGE DELAY CONFIGURATION | |------------------------------------------------------------| | Function | J2 | J8 | J9 | JP20 | |-----------------------+---------+--------+--------+--------| | Normal card installed | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | |-----------------------+---------+--------+--------+--------| | Card installed needs | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | | address time | | | | | |------------------------------------------------------------| | Note: Pins designated should be in closed position. | | Systems utilizing cards that need more address time are: | | DX4-100, DX4-75, DX2-66, DX-50, DX-40, DX-33. | +------------------------------------------------------------+