NORTHGATE COMPUTER SYSTEMS, INC. ================================ 386 ELEGANCE Processor 80386DX Processor Speed 20/25MHz Chip Set OPTI Max. Onboard DRAM 8MB Cache 64/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit external memory card slot NPU Options 80387/3167 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |-------------+----------+------------------------+----------| | Turbo LED | J3 | Reset switch | J6 | |-------------+----------+------------------------+----------| | Power LED & | J4 | 32-bit external memory | S1 | | keylock | | card | | |-------------+----------+------------------------+----------| | Speaker | J5 | Turbo switch | W6 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Factory configured - do not | W1 | pins 2 & 3 | | | alter (Rev. B that has jumper | | closed | | | W10) | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W1 | Open | | | alter (Rev. Bs without jumper | | | | | W10) | | | |---+----------------------------------+--------+------------| |>> | DRAM (8-bit) speed select 20MHz | W4 | pins 2 & 3 | | | CPU | | closed | |---+----------------------------------+--------+------------| | | DRAM (8-bit) speed select 25MHz | W4 | pins 1 & 2 | | | CPU | | closed | |---+----------------------------------+--------+------------| |>> | DRAM (16-bit) speed select 20MHz | W5 | pins 2 & 3 | | | CPU | | closed | |---+----------------------------------+--------+------------| | | DRAM (16-bit) speed select 25MHz | W5 | pins 1 & 2 | | | CPU | | closed | |---+----------------------------------+--------+------------| |>> | Monitor type select monochrome | W7 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Monitor type select color | W7 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W10 | N/A | | | alter (some Rev. Bs only) | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Socket | Socket | | | | | | | U60 | U73 | |------+--------+--------+--------+--------+--------+--------| | 1MB | (4) | NONE | NONE | NONE | PAL B | PAL B | | | 256K x | | | | | | | | 9 | | | | | | |------+--------+--------+--------+--------+--------+--------| | 2MB | (4) | (4) | NONE | NONE | PAL B | PAL B | | | 256K x | 256K x | | | | | | | 9 | 9 | | | | | |------+--------+--------+--------+--------+--------+--------| | 3MB | (4) | (4) | (4) | NONE | PAL B | PAL B | | | 256K x | 256K x | 256K x | | | | | | 9 | 9 | 9 | | | | |------+--------+--------+--------+--------+--------+--------| | 4MB | (4) | (4) | (4) | (4) | PAL B | PAL B | | | 256K x | 256K x | 256K x | 256K x | | | | | 9 | 9 | 9 | 9 | | | |------+--------+--------+--------+--------+--------+--------| | 4MB | (4) 1M | NONE | NONE | NONE | PAL A | PAL A | | | x 9 | | | | | | |------+--------+--------+--------+--------+--------+--------| | 5MB | (4) 1M | NONE | (4) | NONE | PAL A | PAL A | | | x 9 | | 256K x | | | | | | | | 9 | | | | |------+--------+--------+--------+--------+--------+--------| | 6MB | (4) 1M | NONE | (4) | (4) | PAL A | PAL A | | | x 9 | | 256K x | 256K x | | | | | | | 9 | 9 | | | |------+--------+--------+--------+--------+--------+--------| | 8MB | (4) 1M | (4) 1M | NONE | NONE | PAL A | PAL A | | | x 9 | x 9 | | | | | |------+--------+--------+--------+--------+--------+--------| | 9MB | (4) 1M | (4) 1M | (4) | NONE | PAL A | PAL A | | | x 9 | x 9 | 256K x | | | | | | | | 9 | | | | |------+--------+--------+--------+--------+--------+--------| | 10MB | (4) 1M | (4) 1M | (4) | (4) | PAL A | PAL A | | | x 9 | x 9 | 256K x | 256K x | | | | | | | 9 | 9 | | | |------+--------+--------+--------+--------+--------+--------| | 12MB | (4) 1M | (4) 1M | (4) 1M | NONE | PAL A | PAL A | | | x 9 | x 9 | x 9 | | | | |------+--------+--------+--------+--------+--------+--------| | 16MB | (4) 1M | (4) 1M | (4) 1M | (4) 1M | PAL A | PAL A | | | x 9 | x 9 | x 9 | x 9 | | | |------------------------------------------------------------| | Note:Banks 2 & 3 are used when 32-bit external memory card | | is installed at S1. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | SW1 | W8 | W9 | |------+------------------+-----------------+----------------| | 1MB | Open | pins 2 & 3 | pins 2 & 3 | | | | closed | closed | |------+------------------+-----------------+----------------| | 2MB | Open | pins 2 & 3 | pins 2 & 3 | | | | closed | closed | |------+------------------+-----------------+----------------| | 3MB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |------+------------------+-----------------+----------------| | 4MB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |------+------------------+-----------------+----------------| | 4MB | Open | pins 2 & 3 | pins 2 & 3 | | | | closed | closed | |------+------------------+-----------------+----------------| | 5MB | pins 3 & 4, 7 & | pins 1 & 2 | pins 1 & 2 | | | 8 closed | closed | closed | |------+------------------+-----------------+----------------| | 6MB | pins 3 & 4, 7 & | pins 1 & 2 | pins 1 & 2 | | | 8 closed | closed | closed | |------+------------------+-----------------+----------------| | 8MB | Open | pins 1 & 2 | pins 1 & 2 | | | | closed | closed | |------+------------------+-----------------+----------------| | 9MB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |------+------------------+-----------------+----------------| | 10MB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |------+------------------+-----------------+----------------| | 12MB | pins 1 & 2, 7 & | pins 1 & 2 | pins 1 & 2 | | | 8 closed | closed | closed | |------+------------------+-----------------+----------------| | 16MB | Open | pins 1 & 2 | pins 1 & 2 | | | | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | TAG | |------------------+--------------------+--------------------| | 64KB | (8) 64K x 1 | (2) 64K x 1 | |------------------+--------------------+--------------------| | 256KB | (8) 64K x 4 | (2) 64K x 4 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | W2 | W3 | |------------------+--------------------+--------------------| | 64KB | pins 1 & 2 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | 256KB | pins 2 & 3 closed | pins 2 & 3 closed | +------------------------------------------------------------+