ABIT COMPUTER CORPORATION ========================= AN4R2/AN4TR2 REV. 1.1 & REV. 1.2 Processor SL80486SX/80486SX/CX486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4 Processor 20/25/33/40/50(internal)/66(internal)/75(internal)/83(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 128/256/512KB BIOS AMI/Award Dimensions 330mm 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 | JP25 | Reset switch | JW3 | |-------------------+-----------+-----------------+----------| | Green PC | JP46 pins | Turbo switch | JW4 | | connector | 1 - 3 | | | | (monitor) | | | | |-------------------+-----------+-----------------+----------| | Green PC | JP46 pins | Turbo LED | JW5 | | connector | 7 & 8 | | | |-------------------+-----------+-----------------+----------| | Power LED & | JW1 | 32-bit VESA | SL1 - | | keylock | | local bus slots | SL3 | |-------------------+-----------+-----------------+----------| | Speaker | JW2 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Factory configured - do not | JP3 | pins 2 & 3 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP4 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP6 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP13 | Closed | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP14 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP15 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP16 | Closed | | | alter | | | |---+----------------------------------+--------+------------| |>> | CMOS memory normal operation | JP21 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CMOS memory clear | JP21 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP41 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP49 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP52 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP60 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP62 | N/A | | | alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 | |------+-------------+-------------+------------+------------| | 1MB | NONE | NONE | (1) 256K x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 1MB | (4) 256K x | NONE | NONE | NONE | | | 9 | | | | |------+-------------+-------------+------------+------------| | 1MB | (4) 256K x | NONE | NONE | NONE | | | 9 | | | | |------+-------------+-------------+------------+------------| | 2MB | NONE | NONE | (1) 256K x | (1) 256K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 2MB | (4) 256K x | NONE | NONE | (1) 256K x | | | 9 | | | 36 | |------+-------------+-------------+------------+------------| | 2MB | NONE | NONE | (1) 512K x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 2MB | (4) 256K x | (4) 256K x | NONE | NONE | | | 9 | 9 | | | |------+-------------+-------------+------------+------------| | 4MB | NONE | NONE | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 4MB | (4) 1M x 9 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 4MB | NONE | NONE | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 4MB | (4) 256K x | NONE | (1) 512K x | (1) 256K x | | | 9 | | 36 | 36 | |------+-------------+-------------+------------+------------| | 4MB | (4) 256K x | (4) 256K x | (1) 512K x | NONE | | | 9 | 9 | 36 | | |------+-------------+-------------+------------+------------| | 5MB | NONE | NONE | (1) 256K x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 5MB | (4) 256K x | NONE | NONE | (1) 1M x | | | 9 | | | 36 | |------+-------------+-------------+------------+------------| | 6MB | (4) 1M x 9 | NONE | (1) 256K x | (1) 256K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 6MB | (4) 256K x | NONE | (1) 1M x | (1) 256K x | | | 9 | | 36 | 36 | |------+-------------+-------------+------------+------------| | 6MB | NONE | NONE | (1) 512K x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 6MB | (4) 256K x | (4) 256K x | (1) 1M x | NONE | | | 9 | 9 | 36 | | |------+-------------+-------------+------------+------------| | 8MB | NONE | NONE | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 8MB | (4) 1M x 9 | NONE | NONE | (1) 1M x | | | | | | 36 | |------+-------------+-------------+------------+------------| | 8MB | NONE | NONE | (1) 2M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 8MB | (4) 1M x 9 | NONE | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE | |------+-------------+-------------+------------+------------| | 10MB | (4) 1M x 9 | (4) 1M x 9 | (1) 256K x | (1) 256K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 10MB | (4) 256K x | (4) 256K x | (1) 1M x | (1) 1M x | | | 9 | 9 | 36 | 36 | |------+-------------+-------------+------------+------------| | 12MB | (4) 1M x 9 | NONE | (1) 1M x | (1) 1M x | | | | | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 | |------+-------------+-------------+------------+------------| | 12MB | (4) 1M x 9 | NONE | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | NONE | NONE | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (4) 4M x 9 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 16MB | NONE | NONE | (1) 2M x | (1) 2M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (4) 4M x 9 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 17MB | NONE | NONE | (1) 256K x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 17MB | (4) 256K x | NONE | NONE | (1) 4M x | | | 9 | | | 36 | |------+-------------+-------------+------------+------------| | 18MB | (4) 4M x 9 | NONE | (1) 256K x | (1) 256K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 18MB | (4) 256K x | NONE | (1) 4M x | (1) 256K x | | | 9 | | 36 | 36 | |------+-------------+-------------+------------+------------| | 18MB | NONE | NONE | (1) 512K x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 18MB | (4) 256K x | (4) 256K x | (1) 4M x | NONE | | | 9 | 9 | 36 | | |------+-------------+-------------+------------+------------| | 20MB | NONE | NONE | (1) 1M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 20MB | (4) 1M x 9 | NONE | NONE | (1) 4M x | | | | | | 36 | |------+-------------+-------------+------------+------------| | 20MB | (4) 4M x 9 | NONE | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 24MB | (4) 4M x 9 | NONE | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 24MB | (4) 1M x 9 | NONE | (1) 4M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 24MB | (4) 1M x 9 | (4) 4M x 9 | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 24MB | (4) 1M x 9 | (4) 1M x 9 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 32MB | NONE | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 32MB | (4) 4M x 9 | NONE | NONE | (1) 4M x | | | | | | 36 | |------+-------------+-------------+------------+------------| | 32MB | NONE | NONE | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE | |------+-------------+-------------+------------+------------| | 36MB | (4) 4M x 9 | NONE | (1) 1M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 36MB | (4) 1M x 9 | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 36MB | (4) 4M x 9 | (4) 4M x 9 | (1) 512K x | (1) 512K x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 36MB | (4) 1M x 9 | NONE | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 36MB | (4) 1M x 9 | (4) 4M x 9 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 40MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 40MB | (4) 1M x 9 | NONE | (1) 8M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 40MB | (4) 1M x 9 | (4) 1M x 9 | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 40MB | (4) 1M x 9 | (4) 1M x 9 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 48MB | (4) 4M x 9 | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 48MB | (4) 4M x 9 | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 48MB | (4) 4M x 9 | NONE | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 48MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 64MB | NONE | NONE | (1) 16M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 64MB | (4) 16M x 9 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 64MB | NONE | NONE | (1) 8M x | (1) 8M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 64MB | (4) 4M x 9 | NONE | (1) 8M x | (1) 4M x | | | | | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 | |-------+-------------+------------+-------------+-----------| | 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 8M x 36 | NONE | |-------+-------------+------------+-------------+-----------| | 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 64MB | (4) 16M x 9 | NONE | NONE | NONE | |-------+-------------+------------+-------------+-----------| | 65MB | NONE | NONE | (1) 256K x | (1) 16M x | | | | | 36 | 36 | |-------+-------------+------------+-------------+-----------| | 65MB | (4) 256K x | NONE | NONE | (1) 16M x | | | 9 | | | 36 | |-------+-------------+------------+-------------+-----------| | 68MB | NONE | NONE | (1) 1M x 36 | (1) 16M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 68MB | (4) 1M x 9 | NONE | NONE | (1) 16M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 68MB | (4) 1M x 9 | (4) 16M x | NONE | NONE | | | | 9 | | | |-------+-------------+------------+-------------+-----------| | 72MB | (4) 16M x 9 | NONE | (1) 1M x 36 | (1) 1M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 72MB | (4) 1M x 9 | NONE | (1) 16M x | (1) 1M x | | | | | 36 | 36 | |-------+-------------+------------+-------------+-----------| | 72MB | (4) 1M x 9 | (4) 1M x 9 | (1) 16M x | NONE | | | | | 36 | | |-------+-------------+------------+-------------+-----------| | 80MB | NONE | NONE | (1) 4M x 36 | (1) 16M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 80MB | (4) 4M x 9 | NONE | NONE | (1) 16M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 80MB | (4) 4M x 9 | (4) 16M x | NONE | NONE | | | | 9 | | | |-------+-------------+------------+-------------+-----------| | 96MB | (4) 16M x 9 | NONE | (1) 4M x 36 | (1) 4M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 96MB | (4) 4M x 9 | NONE | (1) 16M x | (1) 4M x | | | | | 36 | 36 | |-------+-------------+------------+-------------+-----------| | 96MB | (4) 4M x 9 | (4) 4M x 9 | (1) 16M x | NONE | | | | | 36 | | |-------+-------------+------------+-------------+-----------| | 128MB | NONE | NONE | (1) 16M x | (1) 16M x | | | | | 36 | 36 | |-------+-------------+------------+-------------+-----------| | 128MB | (4) 16M x 9 | NONE | NONE | (1) 16M x | | | | | | 36 | |-------+-------------+------------+-------------+-----------| | 128MB | (4) 16M x 9 | (4) 16M x | NONE | NONE | | | | 9 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Bank | Bank | Bank | Bank | JP18 | JP19 | JP20 | JP22 | | 0 | 1 | 2 | 3 | | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | 1 & | 1 & | Open | 1 & | | 1 - 4 | 5 - 8 | 9 | 10 | 2 | 2 | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | 1 & | Open | 1 & | | 1 - 4 | 5 - 8 | 9 | | 2 | 2 | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | NONE | NONE | 1 & | Open | Open | 1 & | | 1 - 4 | 9 | | | 2 | | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | 1 & | | 1 - 4 | 10 | 9 | | 2 | | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | 2 & | 2 & | Open | 2 & | | 9 | 10 | 1 - 4 | 5 - | 3 | 3 | | 3 | | | | | 8 | | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | NONE | NONE | Open | Open | Closed | 2 & | | 9 | 10 | | | | | | 3 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | 1 & | | 1 - 4 | 10 | 9 | | 2 | | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | 2 & | 2 & | Open | 2 & | | 9 | 10 | 1 - 4 | 5 - | 3 | 3 | | 3 | | | | | 8 | | | | | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION (CON'T) | |------------------------------------------------------------| | Bank | Bank | Bank | Bank | JP23 | JP24 | JP50 | JP51 | | 0 | 1 | 2 | 3 | | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | Open | 1 & | Open | Open | | 1 - 4 | 5 - 8 | 9 | 10 | | 2 | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | Open | | 1 - 4 | 5 - 8 | 9 | | 2 | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | NONE | NONE | 2 & | Open | Open | Open | | 1 - 4 | 9 | | | 3 | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | 2 & | Open | Open | | 1 - 4 | 10 | 9 | | 2 | 3 | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | Open | 2 & | Closed | 2 & | | 9 | 10 | 1 - 4 | 5 - | | 3 | | 3 | | | | | 8 | | | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | NONE | NONE | 2 & | Open | Open | 1 & | | 9 | 10 | | | 3 | | | 2 | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | NONE | 1 & | 2 & | Open | Open | | 1 - 4 | 10 | 9 | | 2 | 3 | | | |-------+-------+-------+------+------+------+--------+------| | SIMM | SIMM | SIMM | SIMM | Open | 2 & | Open | Open | | 9 | 10 | 1 - 4 | 5 - | | 3 | | | | | | | 8 | | | | | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |------------+---------------+---------------+---------------| | 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | |------------+---------------+---------------+---------------| | 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 256KB | (4) 64K x 8 | NONE | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP1 | JP2 | JP42 | JP44 | |-------+-------------+------------+------------+------------| | 128KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | closed | |-------+-------------+------------+------------+------------| | 256KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | closed | |-------+-------------+------------+------------+------------| | 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | closed | |-------+-------------+------------+------------+------------| | 512KB | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP9 | JP12 | JP30 | JP31 | JP33 | |--------------+--------+--------+--------+--------+---------| | SL80486SX | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open | |--------------+--------+--------+--------+--------+---------| | 80486SX | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open | |--------------+--------+--------+--------+--------+---------| | CX486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | SL80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | 80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | CX486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | AM486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | SL80486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | 80486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed | |--------------+--------+--------+--------+--------+---------| | 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed | |------------------------------------------------------------| | Note: Pins designated should be in the closed | | position. The 80486DX4 CPU is only available on the | | AN4TR2 mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP34 | JP35 | JP36 | JP38 | |--------------+----------+----------+-------------+---------| | SL80486SX | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | 80486SX | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | CX486DX | 2 & 3 | 2 & 3 | 1 & 2, 3 & | 2 & 3 | | | | | 4 | | |--------------+----------+----------+-------------+---------| | SL80486DX | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | 80486DX | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | CX486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | |--------------+----------+----------+-------------+---------| | AM486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | SL80486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | 80486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open | |--------------+----------+----------+-------------+---------| | 80486DX4 | 4 & 5 | 3 & 4 | 2 & 3 | Open | |------------------------------------------------------------| | Note: Pins designated should be in the closed | | position. The 80486DX4 CPU is only available on the | | AN4TR2 mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP39 | JP43 | JP47 | JP48 | JP63 | |---------------+--------+--------+--------+--------+--------| | SL80486SX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | 80486SX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | CX486DX | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open | |---------------+--------+--------+--------+--------+--------| | SL80486DX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | 80486DX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | CX486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open | |---------------+--------+--------+--------+--------+--------| | AM486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | |---------------+--------+--------+--------+--------+--------| | SL80486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | 80486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |---------------+--------+--------+--------+--------+--------| | 80486DX4 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open | |------------------------------------------------------------| | Note: Pins designated should be in the closed | | position. The 80486DX4 CPU is only available on the | | AN4TR2 mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION (AVASEM AV9107) | |------------------------------------------------------------| | Speed | JP8 | JP10 | JP11 | JP26 | JP27 |JP28 | JP29 | |--------+-------+-------+------+-------+-------+-----+------| | 20MHz | 2 & 3 | Open | Open |Closed | Open |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 25MHz | 2 & 3 | Open | Open | Open |Closed |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 33MHz | 2 & 3 | Open | Open |Closed |Closed |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 40MHz | 2 & 3 | Open | Open | Open | Open |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 50iMHz | 2 & 3 | Open | Open | Open |Closed |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 66iMHz | 2 & 3 | Open | Open |Closed |Closed |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 75iMHz | 2 & 3 | Open |1 & 2 | Open |Closed |Open |Closed| |--------+-------+-------+------+-------+-------+-----+------| | 83iMHz | 2 & 3 |Closed | Open |Closed |Closed |Open | Open | |--------+-------+-------+------+-------+-------+-----+------| |100iMHz | 2 & 3 | Open |1 & 2 |Closed |Closed |Open | Open | |------------------------------------------------------------| |Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION (MX8315) | |------------------------------------------------------------| | Speed | JP8 | JP10 | JP11 | JP26 | JP27 |JP28 | JP29 | |--------+-------+-------+------+-------+-------+-----+------| | 20MHz | 1 & 2 | Open | Open | Open | Open |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 25MHz | 1 & 2 | Open | Open | Open |Closed |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 33MHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 40MHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 50iMHz | 1 & 2 | Open | Open | Open |Closed |1 & 2| Open | |--------+-------+-------+------+-------+-------+-----+------| | 66iMHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2|Closed| |--------+-------+-------+------+-------+-------+-----+------| | 75iMHz | 1 & 2 | Open |1 & 2 | Open |Closed |Open |Closed| |--------+-------+-------+------+-------+-------+-----+------| | 83iMHz | 1 & 2 |Closed | Open |Closed |Closed |Open |Closed| |--------+-------+-------+------+-------+-------+-----+------| |100iMHz | 1 & 2 | Open |1 & 2 |Closed |Closed |Open |Closed| |------------------------------------------------------------| |Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Voltage | JP53 | JP54 | JP55 | JP56 | |---------+------------+------------+------------+-----------| | 3.3v | pins 1 & 2 | Open | Open | Open | | | closed | | | | |---------+------------+------------+------------+-----------| | 3.45v | Open | pins 1 & 2 | Open | Open | | | | closed | | | |---------+------------+------------+------------+-----------| | 3.6v | Open | Open | pins 1 & 2 | Open | | | | | closed | | |---------+------------+------------+------------+-----------| | 4v | Open | Open | Open | pins 1 & | | | | | | 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | BUS SPEED CONFIGURATION | |------------------------------------------------------------| | CPU speed | JP7 | |----------------------------+-------------------------------| | <= 33MHz | pins 1 & 2 closed | |----------------------------+-------------------------------| | > 33MHz | pins 2 & 3 closed | +------------------------------------------------------------+