ABIT COMPUTER CORPORATION ========================= PV4/PV4T (REV. 1.1) Processor 80486SX/SL80486SX/U5S/CX486DX/AM486DX/80486DX/SL80486DX/ AM486DX2/AM486DX2V8T/CX486DX2/CX486DX2V/SL80486DX2/AM486DX4/ 80486DX4/Pentium Overdrive Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 128MB Onboard DRAM Cache 128/256/512KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit PCI slots (2), floppy drive interface, game port, green PC connector, Options IDE interfaces (2), parallel port, serial ports (2), VGA feature connector, VGA port NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------------+----------+---------------+----------| | IDE interface | CN1 | Green PC | JP39 | | (primary) | | connector | | |----------------------+----------+---------------+----------| | IDE interface | CN2 | Power LED & | JW1 | | (secondary) | | keylock | | |----------------------+----------+---------------+----------| | Floppy drive | CN3 | Speaker | JW2 | | interface | | | | |----------------------+----------+---------------+----------| | Parallel port | CN4 | Turbo LED | JW3 | |----------------------+----------+---------------+----------| | Serial port 1 | J3 | Turbo switch | JW4 | |----------------------+----------+---------------+----------| | Serial port 2 | J4 | Reset switch | JW5 | |----------------------+----------+---------------+----------| | Game interface | J5 | IDE interface | JW6 | | | | LED | | |----------------------+----------+---------------+----------| | External battery | J6 | IDE interface | JW7 | | | | LED | | |----------------------+----------+---------------+----------| | VGA interface | J9 | 32-bit PCI | PC1 & | | | | slots | PC2 | |----------------------+----------+---------------+----------| | VGA feature | J10 | | | | connector | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Factory configured - do not | J12 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP5 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP6 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP36 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP42 | pins 2 & 3 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP43 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | On board VGA enabled | JP69 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | On board VGA disabled | JP69 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP70 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP84 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | RN18 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | RN19 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | RN20 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | RN21 | N/A | | | alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | (1) 256K x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 2MB | (1) 256K x 36 | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 2MB | (1) 512K x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 4MB | (1) 256K x 36 | (1) 256K x 36 | (1) 512K x 36 | |------------+---------------+---------------+---------------| | 4MB | (1) 512K x 36 | (1) 512K x 36 | NONE | |------------+---------------+---------------+---------------| | 4MB | (1) 1M x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 5MB | (1) 256K x 36 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 6MB | (1) 256K x 36 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 6MB | (1) 512K x 36 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 8MB | (1) 512K x 36 | (1) 512K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 8MB | (1) 2M x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 16MB | (1) 4M x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 17MB | (1) 256K x 36 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 18MB | (1) 256K x 36 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | (1) 512K x 36 | (1) 512K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x 36 | |------------+---------------+---------------+---------------| | 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 32MB | (1) 8M x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 36MB | (1) 1M x 36 | (1) 8M x 36 | NONE | |------------+---------------+---------------+---------------| | 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 48MB | (1) 4M x 36 | (1) 8M x 36 | NONE | |------------+---------------+---------------+---------------| | 64MB | (1) 16M x 36 | NONE | NONE | |------------+---------------+---------------+---------------| | 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | |------------+---------------+---------------+---------------| | 65MB | (1) 256K x 36 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 68MB | (1) 1M x 36 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 68MB | (1) 1M x 36 | (1) 8M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 72MB | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 80MB | (1) 4M x 36 | (1) 16M x 36 | NONE | |------------+---------------+---------------+---------------| | 80MB | (1) 4M x 36 | (1) 8M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 96MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 96MB | (1) 8M x 36 | (1) 8M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 128MB | (1) 16M x 36 | (1) 16M x 36 | NONE | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | TAG | |------------------+--------------------+--------------------| | 128KB | (4) 32K x 8 | (1) 32K x 8 | |------------------+--------------------+--------------------| | 256KB | (4) 64K x 8 | (1) 32K x 8 | |------------------+--------------------+--------------------| | 512KB | (4) 128K x 8 | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP20 | |----------------------------+-------------------------------| | 128KB | pins 1 & 2, 4 & 5 closed | |----------------------------+-------------------------------| | 256KB | pins 2 & 3, 4 & 5 closed | |----------------------------+-------------------------------| | 512KB | pins 2 & 3, 5 & 6 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP7 | JP10 | JP11 | JP37 | |-----------------+----------+--------+------------+---------| | 80486SX | Open | Open | 1 & 3, 2 & | 1 & 2 | | | | | 4 | | |-----------------+----------+--------+------------+---------| | SL80486SX | Open | Open | 1 & 3, 2 & | Open | | | | | 4 | | |-----------------+----------+--------+------------+---------| | U5S | Open | Open | 1 & 3, 2 & | 1 & 2 | | | | | 4 | | |-----------------+----------+--------+------------+---------| | CX486DX | Open | Open | 1 & 3, 2 & | Open | | | | | 4 | | |-----------------+----------+--------+------------+---------| | AM486DX | Open | Open | 1 & 3, 2 & | 1 & 2 | | | | | 4 | | |-----------------+----------+--------+------------+---------| | 80486DX | Open | Open | 1 & 3, 2 & | 1 & 2 | | | | | 4 | | |-----------------+----------+--------+------------+---------| | SL80486DX | Open | Open | 1 & 3, 2 & | Open | | | | | 4 | | |-----------------+----------+--------+------------+---------| | AM486DX2 | Open | Open | 1 & 3, 2 & | 1 & 2 | | | | | 4 | | |-----------------+----------+--------+------------+---------| | AM486DX2V8T | Closed | Open | 3 & 4, 5 & | 1 & 2 | | | | | 6 | | |-----------------+----------+--------+------------+---------| | CX486DX2 | Open | Open | 1 & 3, 2 & | Open | | | | | 4 | | |-----------------+----------+--------+------------+---------| | CX486DX2V | Open | Open | 3 & 4, 5 & | Open | | | | | 6 | | |-----------------+----------+--------+------------+---------| | SL80486DX2 | Open | Open | 1 & 3, 2 & | Open | | | | | 4 | | |-----------------+----------+--------+------------+---------| | AM486DX4 | Open | Open | 3 & 5, 4 & | 1 & 2 | | | | | 6 | | |-----------------+----------+--------+------------+---------| | 80486DX4 | Open | Open | 3 & 5, 4 & | Open | | | | | 6 | | |-----------------+----------+--------+------------+---------| | Pentium | Open | Open | 1 & 3, 2 & | Open | | Overdrive | | | 4 | | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | | The CX486DX2V, AM486DX4V8T & 80486DX4 are only available | | on the PV4T mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | RN1 | RN2 | RN3 | RN4 | |-----------------+---------+----------+---------+-----------| | 80486SX | Not | Not | Not |pins 9 - 16| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | SL80486SX | Not | Not | Not |pins 9 - 16| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | U5S | Not | Not | Not |pins 9 - 16| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | CX486DX | Not |pins 1 - 8| Not |pins 1 - 8 | | |installed| closed |installed| closed | |-----------------+---------+----------+---------+-----------| | AM486DX | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | 80486DX | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | SL80486DX | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | AM486DX2 | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | AM486DX2V8T | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | CX486DX2 | Not |pins 1 - 8| Not |pins 1 - 8 | | |installed| closed |installed| closed | |-----------------+---------+----------+---------+-----------| | CX486DX2V | Not |pins 1 - 8| Not |pins 1 - 8 | | |installed| closed |installed| closed | |-----------------+---------+----------+---------+-----------| | SL80486DX2 | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | AM486DX4 | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| | 80486DX4 | Not | Not | Not |pins 5 - 12| | |installed|installed |installed| closed | |-----------------+---------+----------+---------+-----------| |Pentium Overdrive| Not | Not | Not | Not | | |installed|installed |installed| installed | |------------------------------------------------------------| |Note: The CX486DX2V, AM486DX4V8T & 80486DX4 are only | |available on the PV4T mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | RN5 | RN6 | RN7 | |--------------+-------------------+------------+------------| | 80486SX | Not installed | Not | pins 1 - 8 | | | | installed | closed | |--------------+-------------------+------------+------------| | SL80486SX | Not installed | Not | pins 1 - 8 | | | | installed | closed | |--------------+-------------------+------------+------------| | U5S | Not installed | Not | pins 1 - 8 | | | | installed | closed | |--------------+-------------------+------------+------------| | CX486DX | Not installed | pins 1 - 8 | Not | | | | closed | installed | |--------------+-------------------+------------+------------| | AM486DX | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | 80486DX | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | SL80486DX | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | AM486DX2 | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | AM486DX2V8T | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | CX486DX2 | Not installed | pins 1 - 8 | Not | | | | closed | installed | |--------------+-------------------+------------+------------| | CX486DX2V | Not installed | pins 1 - 8 | Not | | | | closed | installed | |--------------+-------------------+------------+------------| | SL80486DX2 | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | AM486DX4 | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | 80486DX4 | Not installed | pins 1 - 8 | pins 1 - 8 | | | | closed | closed | |--------------+-------------------+------------+------------| | Pentium | pins 7 & 16 | pins 2 & 3 | pins 1 & 2 | | Overdrive | closed | closed | closed | |------------------------------------------------------------| | Note: The CX486DX2V, AM486DX4V8T & 80486DX4 are only | | available on the PV4T mainboard. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP32 | JP33 | JP34 | JP35 | |----------+-------------------+---------+---------+---------| | 25MHz | pins 1 & 2 closed | Open | Open | Closed | |----------+-------------------+---------+---------+---------| | 33MHz | pins 1 & 2 closed | Closed | Closed | Closed | |----------+-------------------+---------+---------+---------| | 40MHz | pins 1 & 2 closed | Open | Closed | Closed | |----------+-------------------+---------+---------+---------| | 50iMHz | pins 1 & 2 closed | Open | Open | Closed | |----------+-------------------+---------+---------+---------| | 66iMHz | pins 1 & 2 closed | Closed | Closed | Closed | |----------+-------------------+---------+---------+---------| | 75iMHz | pins 1 & 2 closed | Open | Open | Closed | |----------+-------------------+---------+---------+---------| | 80iMHz | pins 1 & 2 closed | Open | Closed | Closed | |----------+-------------------+---------+---------+---------| | 100iMHz | pins 1 & 2 closed | Closed | Closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE CONFIGURATION | |------------------------------------------------------------| | Voltage | JP1 | JP2 | JP3 | JP4 | |------------+-----------+-----------+-----------+-----------| | 3.3v | Closed | Open | Open | Open | |------------+-----------+-----------+-----------+-----------| | 3.45v | Open | Closed | Open | Open | |------------+-----------+-----------+-----------+-----------| | 3.6v | Open | Open | Closed | Open | |------------+-----------+-----------+-----------+-----------| | 4.04v | Open | Open | Open | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CMOS CONFIGURATION | |------------------------------------------------------------| | Setting | JP60 | JP80 | |--------------------+-------------------+-------------------| | CMOS memory normal | pins 1 & 2 closed | pins 1 & 2 closed | | operation | | | |--------------------+-------------------+-------------------| | CMOS memory clear | pins 2 & 3 closed | pins 2 & 3 closed | +------------------------------------------------------------+