BIOSTAR MICROTECH INTERNATIONAL CORPORATION =========================================== MB-1425/33/40/50UCV-B/C/D/E Processor CX486S/80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/ Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 64MB Onboard DRAM Cache 32/64/128/256KB BIOS AMI Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |--------------------+----------+---------------+------------| | Daughter board | BC20 | Turbo LED | JP15 pins | | connector | | | 10 - 11 | |--------------------+----------+---------------+------------| | External battery | JP8 | Reset switch | JP15 pins | | | | | 12 - 13 | |--------------------+----------+---------------+------------| | Green PC connector | JP14 | Turbo switch | JP15 pins | | (Ver. D & E) | | | 14 - 16 | |--------------------+----------+---------------+------------| | Speaker | JP15 | +5v ground | JP15 pins | | | pins 1 - | | 17 - 18 | | | 4 | | | |--------------------+----------+---------------+------------| | Power LED & | JP15 | 32-bit VESA | SL1 - SL3 | | keylock | pins 5 - | local bus | | | | 9 | slots | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Password normal operation | JP3 | Open | |---+----------------------------------+--------+------------| | | Password memory clear | JP3 | Closed | |---+----------------------------------+--------+------------| |>> | CMOS memory normal operation | JP8 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | CMOS memory clear | JP8 | pins 3 & 4 | | | | | closed | |---+----------------------------------+--------+------------| | | Battery type select external | JP8 | Closed | |---+----------------------------------+--------+------------| |>> | Power good signal detect from | JP11 | pins 1 & 2 | | | power supply | | closed | |---+----------------------------------+--------+------------| | | Power good signal detect from | JP11 | pins 2 & 3 | | | board | | closed | |---+----------------------------------+--------+------------| |>> | CPU type select PQFP or PGA | JP12 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CPU type select PGA enabled & | JP12 | pins 2 & 3 | | | PQFP disabled | | closed | |---+----------------------------------+--------+------------| |>> | Monitor type select color (Ver. | JP14 | pins 2 & 3 | | | B & C only) | | closed | |---+----------------------------------+--------+------------| | | Monitor type select monochrome | JP14 | pins 1 & 2 | | | (Ver. B & C only) | | closed | |---+----------------------------------+--------+------------| |>> | VGA card select normal card | JP28 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | VGA card select Weitek Power | JP28 | pins 2 & 3 | | | 9000 VGA card only | | closed | |---+----------------------------------+--------+------------| |>> | Cyrix CPU type select CX486DX | JP34 | Open | |---+----------------------------------+--------+------------| | | Cyrix CPU type select CX486DX2 | JP34 | Closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP36 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Mouse COM port select COM2 | JP39 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Mouse COM port select COM1 | JP39 | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |--------+---------------+-------------------+---------------| | 1MB | (4) 256K x 9 | NONE | NONE | |--------+---------------+-------------------+---------------| | 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE | |--------+---------------+-------------------+---------------| | 3MB | (4) 256K x 9 | (1) 256K x 36 | (1) 256K x 36 | |--------+---------------+-------------------+---------------| | 4MB | (4) 256K x 9 | (1) 256K x 36 | (1) 512K x 36 | |--------+---------------+-------------------+---------------| | 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE | |--------+---------------+-------------------+---------------| | 6MB | (4) 256K x 9 | (1) 1M x 36 | (1) 256K x 36 | |--------+---------------+-------------------+---------------| | 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE | |--------+---------------+-------------------+---------------| | 10MB | (4) 1M x 9 | (1) 1M x 36 | (1) 512K x 36 | |--------+---------------+-------------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | |--------+---------------+-------------------+---------------| | 16MB | (4) 1M x 9 | (1) 1M x 36 | (1) 2M x 36 | |--------+---------------+-------------------+---------------| | 20MB | (4) 4M x 9 | (1) 1M x 36 | NONE | |--------+---------------+-------------------+---------------| | 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 | |--------+---------------+-------------------+---------------| | 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE | |--------+---------------+-------------------+---------------| | 36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 | |--------+---------------+-------------------+---------------| | 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | |--------+---------------+-------------------+---------------| | 64MB | (4) 16M x 9 | NONE | NONE | |------------------------------------------------------------| | Note: If this board uses 30-pin and 72-pin modules, use | | this table. | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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) 1M x 9 | (4) 256K x 9 | |--------------+-----------------------+---------------------| | 8MB | (4) 1M x 9 | (4) 1M x 9 | |--------------+-----------------------+---------------------| | 16MB | (4) 4M x 9 | NONE | |--------------+-----------------------+---------------------| | 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 | |------------------------------------------------------------| | Note: If this board does not use 72-pin sockets, use this | | table. Depending on board revision, it will have either | | this setup or the above setup. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |-------------+---------------+---------------+--------------| | 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 | |-------------+---------------+---------------+--------------| | 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | |-------------+---------------+---------------+--------------| | 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | |-------------+---------------+---------------+--------------| | 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 16K x 8 | |-------------+---------------+---------------+--------------| | 256KB (B) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP5 | JP6 | JP7 | JP9 | JP10 | |------------+---------+---------+----------+--------+-------| | 32KB | 2 & 3 | Open | Open | Open | Open | |------------+---------+---------+----------+--------+-------| | 64KB | 1 & 2 | Open | Open | Closed | Open | |------------+---------+---------+----------+--------+-------| | 128KB | 2 & 3 | 2 & 3 | Closed | Closed | Open | |------------+---------+---------+----------+--------+-------| | 256KB (A) | 1 & 2 | 1 & 2 | Closed | Closed | 2 & 3 | |------------+---------+---------+----------+--------+-------| | 256KB (B) | 1 & 2 | 1 & 2 | Closed | Closed | 1 & 2 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP16 | JP17 | |-------------------+-------------------+--------------------| | CX486S | Open | pins 2 & 3 closed | |-------------------+-------------------+--------------------| | 80486SX | Open | pins 2 & 3 closed | |-------------------+-------------------+--------------------| | ODP486SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 | | | | closed | |-------------------+-------------------+--------------------| | 80487SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 | | | | closed | |-------------------+-------------------+--------------------| | 80486DX | pins 1 & 2 closed | pins 1 & 2, 3 & 4 | | | | closed | |-------------------+-------------------+--------------------| | 80486DX2 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 | | | | closed | |-------------------+-------------------+--------------------| | 80486DX4 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 | | | | closed | |-------------------+-------------------+--------------------| | Pentium Overdrive | pins 1 & 2 closed | pins 1 & 2, 3 & 4 | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP21 | JP22 | JP23 | JP27 | |------------+-----------+-----------+-----------+-----------| | 25MHz | Closed | Open | Closed | Open | |------------+-----------+-----------+-----------+-----------| | 33MHz | Closed | Closed | Open | Open | |------------+-----------+-----------+-----------+-----------| | 40MHz | Open | Open | Closed | Closed | |------------+-----------+-----------+-----------+-----------| | 50iMHz | Closed | Open | Closed | Open | |------------+-----------+-----------+-----------+-----------| | 50MHz | Open | Closed | Open | Closed | |------------+-----------+-----------+-----------+-----------| | 66iMHz | Closed | Closed | Open | Open | |------------+-----------+-----------+-----------+-----------| | 75iMHz | Closed | Open | Closed | Open | |------------+-----------+-----------+-----------+-----------| | 100iMHz | Closed | Closed | Open | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION (80486DX4 ONLY) | |------------------------------------------------------------| | Speed | JP41 | |----------------------------+-------------------------------| | 2x | pins 2 & 3 closed | |----------------------------+-------------------------------| | 3x | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Voltage | JP42 | JP44 | |---------+-------------------------+------------------------| | 3.3v | Open | Open | |---------+-------------------------+------------------------| | 5v | pins 3 & 5, 4 & 6 | pins 1 & 2, 3 & 4 | | | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA BUS CLOCK CONFIGURATION (SLOT 1) | |------------------------------------------------------------| | Setting | JP26 | |----------------------------+-------------------------------| | Synchronous | pins 1 & 2 closed | |----------------------------+-------------------------------| | Asynchronous | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA BUS CLOCK CONFIGURATION (SLOT 2) | |------------------------------------------------------------| | Setting | JP25 | |----------------------------+-------------------------------| | Synchronous | pins 1 & 2 closed | |----------------------------+-------------------------------| | Asynchronous | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA BUS CLOCK CONFIGURATION (SLOT 3) | |------------------------------------------------------------| | Setting | JP29 | |----------------------------+-------------------------------| | Synchronous | pins 1 & 2 closed | |----------------------------+-------------------------------| | Asynchronous | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VGA CARD CONFIGURATION (CIRRUS LOGIC VER. AB) | |------------------------------------------------------------| | CPU speed | JP19 | JP20 | |------------------+--------------------+--------------------| | 25MHz | pins 2 & 3 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 33MHz | pins 2 & 3 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 40MHz | pins 1 & 2 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 50MHz | pins 1 & 2 closed | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VGA CARD CONFIGURATION (CIRRUS LOGIC VER. AC) | |------------------------------------------------------------| | CPU speed | JP19 | JP20 | |------------------+--------------------+--------------------| | 25MHz | pins 2 & 3 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 33MHz | pins 2 & 3 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 40MHz | pins 1 & 2 closed | pins 2 & 3 closed | |------------------+--------------------+--------------------| | 50MHz | pins 1 & 2 closed | pins 2 & 3 closed | +------------------------------------------------------------+