AST RESEARCH, INC. ================== PREMMIA SYSTEM BOARD (P/N202514-00X) Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set ATI Max. Onboard 128MB DRAM Cache 64/256KB (Located on the external cache module) BIOS AST Dimensions 355mm x 304mm I/O Options Cache/Pentium upgrade module, floppy drive interface (2), IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, video port NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| |Purpose |Location |Purpose |Location| |--------------------+---------+--------------------+--------| |Bus mouse port | J12 |Manufacturer's test | J23 | | | |header | | |--------------------+---------+--------------------+--------| |Parallel port | J13 |Floppy drive | J24 | | | |interface 1 & 2 | | |--------------------+---------+--------------------+--------| |Serial port 1 | J14 |Floppy drive | J25 | | | |interface 3 | | |--------------------+---------+--------------------+--------| |Personality/feature | J15 |External battery | J26 | |connector | | | | |--------------------+---------+--------------------+--------| |Personality/feature | J16 |Speaker | J27 | |connector | | | | |--------------------+---------+--------------------+--------| |Pentium/Cache module| J17 |Chassis fan power | J28 | |upgrade | | | | |--------------------+---------+--------------------+--------| |SVGA monitor port | J18 |Front console header| J29 | |--------------------+---------+--------------------+--------| |VGA port | J19 |Manufacturer's test | J30 | | | |header | | |--------------------+---------+--------------------+--------| |Serial port 2 | J20 |IDE interface LED | J35 | |--------------------+---------+--------------------+--------| |IDE interface | J22 |Personality/feature | J46 | | | |connector | | |------------------------------------------------------------| |Note:The personality/feature connectors alow various network| |modules to be added to the system. | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper/Switch | Position | |-------------------------------+---------------+------------| |>> | Factory configured - do | E2 | Open | | | not alter | | | |---+---------------------------+---------------+------------| |>> | Pariity checking enabled | E3 | Closed | |---+---------------------------+---------------+------------| | | Pariity checking disabled | E3 | Open | |---+---------------------------+---------------+------------| |>> | Flash BIOS voltage 12V | E5 | pins 2 & 3 | | | | | closed | |---+---------------------------+---------------+------------| | | Flash BIOS voltage 5V | E5 | pins 1 & 2 | | | | | open | |---+---------------------------+---------------+------------| |>> | VGA enabled | SW1/switch 1 | On | |---+---------------------------+---------------+------------| | | VGA disabled | SW1/switch 1 | Off | |---+---------------------------+---------------+------------| |>> | Factory configured - do | SW1/switch 2 | N/A | | | not alter | | | |---+---------------------------+---------------+------------| |>> | CMOS memory normal | SW1/switch 3 | Off | | | operation | | | |---+---------------------------+---------------+------------| | | CMOS memory clear | SW1/switch 3 | On | |---+---------------------------+---------------+------------| |>> | BIOS normal operation | SW1/switch 4 | Off | |---+---------------------------+---------------+------------| | | BIOS forced update | SW1/switch 4 | On | |---+---------------------------+---------------+------------| |>> | Password override | SW1/switch 5 | Off | |---+---------------------------+---------------+------------| | | Password inhibited | SW1/switch 5 | On | |---+---------------------------+---------------+------------| |>> | Factory configured - do | SW1/switch 6 | Off | | | not alter | | | |---+---------------------------+---------------+------------| |>> | Factory configured - do | SW1/switch 7 | Off | | | not alter | | | |---+---------------------------+---------------+------------| |>> | Factory configured - do | SW1/switch 8 | Off | | | not alter | | | |---+---------------------------+---------------+------------| |>> | Factory configured - do | SW1/switch 9 | Off | | | not alter | | | |---+---------------------------+---------------+------------| |>> | Monitor type select color | SW1/switch 10 | On | |---+---------------------------+---------------+------------| | | Monitor type select | SW1/switch 10 | Off | | | monochrome | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |-------+-------------+------------+------------+------------| | 2MB | (1) 1M x 36 | (1) 1M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 4MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 4MB | (1) 2M x 36 | (1) 2M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 6MB | (1) 1M x 36 | (1) 1M x | (1) 2M x | (1) 2M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 8MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 8MB | (1) 4M x 36 | (1) 4M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 10MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 12MB | (1) 2M x 36 | (1) 2M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 16MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 16MB | (1) 8M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 18MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 20MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 24MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 32MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 32MB | (1) 16M x | (1) 16M x | NONE | NONE | | | 36 | 9 | | | |-------+-------------+------------+------------+------------| | 34MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | (1) 16M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 36MB | (1) 2M x 36 | (1) 2M x | (1) 16M x | (1) 16M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 40MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | (1) 16M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 48MB | (1) 8M x 36 | (1) 8M x | (1) 16M x | (1) 16M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 64MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 64MB | (1) 32M x | (1) 32M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 66MB | (1) 1M x 36 | (1) 1M x | (1) 32M x | (1) 32M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 68MB | (1) 2M x 36 | (1) 2M x | (1) 32M x | (1) 32M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 72MB | (1) 4M x 36 | (1) 4M x | (1) 32M x | (1) 32M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 80MB | (1) 8M x 36 | (1) 8M x | (1) 32M x | (1) 32M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 96MB | (1) 16M x | (1) 16M x | (1) 32M x | (1) 32M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 128MB | (1) 32M x | (1) 32M x | (1) 32M x | (1) 32M x | | | 36 | 36 | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | PQFP | PGA |Pentium | E1 | E4 | E6 | E7 | |--------+----------------+--------+------+------+-----+-----| |80486SX | None | None |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486SX | 80487SX | None |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486SX | ODP486SX | None |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486SX |80486DX/80486DX2| None |pins 1|pins 2|pins |pins | | | | | & 2 | & 3 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486DX | None | None |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486DX |80486DX/80486DX2| None |pins 1|pins 2|pins |pins | | | | | & 2 | & 3 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| |80486DX | ODP486SX | None |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| | None | 80486SX | None | Open | Open |pins |pins | | | | | | |2 & 3|2 & 3| |--------+----------------+--------+------+------+-----+-----| | None |80486DX/80486DX2| None | Open |pins 2|pins |pins | | | | | | & 3 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| | None | ODP486SX | None | Open |pins 1|pins |pins | | | | | | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| | Any | None | Yes |pins 2|pins 1|pins |pins | | | | | & 3 | & 2 |1 & 2|1 & 2| |--------+----------------+--------+------+------+-----+-----| | None | None | Yes | Open |pins 1|pins |pins | | | | | | & 2 |1 & 2|1 & 2| |------------------------------------------------------------| |Note:Pins designated should be in the closed position. | | | |Before installing the Pentium upgrade board, remove the | |processor in the ZIF socket at U13. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VIDEO MEMORY CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 1MB | (2) 46256 | (2) 46256 | |------------------+--------------------+--------------------| | 2MB | (2) 46256 | (2) 46256 | +------------------------------------------------------------+