APRICOT COMPUTERS LIMITED ========================= XEN-PC/PCM Processor CX486M6/CX486CXM6 &C6/80486SX/CX486M7/80486DX/80486DX2/Pentium Overdrive/Pentium Processor 25/33/40/50(internal)/60/66(internal)/66MHz Speed Chip Set ALI/Intel/VLSI Max. Onboard 128MB DRAM Cache 64/128/256/512KB BIOS Unidentified Dimensions 330mm x 218mm I/O Options 32-bit PCI local bus slot (on riser card), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |---------------+----------+----------------------+----------| | VGA port | CN1 | PS/2 mouse port | CN5 | |---------------+----------+----------------------+----------| | Parallel port | CN2 | Floppy drive | CN6 | | | | interface | | |---------------+----------+----------------------+----------| | Serial port 1 | CN3 | IDE interface | CN7 | |---------------+----------+----------------------+----------| | Serial port 2 | CN4 | Riser Card | SL1 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Factory configured - do not | J10 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | BIOS type select original | JP1 | Open | |---+----------------------------------+--------+------------| | | BIOS type select OEM | JP1 | Closed | |---+----------------------------------+--------+------------| |>> | Security enabled | JP2 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Security disabled | JP2 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP3 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | BIOS type select Flash | JP4 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | BIOS type select EPROM | JP4 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Floppy drive select normal | JP5 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Floppy drive select 3 mode | JP5 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | IDE I/O address select 03xH | JP6 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | IDE I/O address select 0BxH | JP6 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | On board video disabled | JP14 | Open | |---+----------------------------------+--------+------------| | | On board video enabled | JP14 | Closed | |---+----------------------------------+--------+------------| |>> | IDE interface enabled | JP16 | Open | |---+----------------------------------+--------+------------| | | IDE interface disabled | JP16 | Closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP19 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Key select locked | JP22 | Open | |---+----------------------------------+--------+------------| | | Key select unlocked | JP22 | Closed | |---+----------------------------------+--------+------------| |>> | On board memory enabled | JP28 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | On board memory disabled | JP28 | pins 2 & 3 | | | | | closed | |------------------------------------------------------------| | Note: The location of JP2 is unknown. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (NON PENTIUM) | |------------------------------------------------------------| | Size | Bank 1 | Bank 2 | |------------------+--------------------+--------------------| | 4MB | NONE | NONE | |------------------+--------------------+--------------------| | 8MB | NONE | (1) 1M x 36 | |------------------+--------------------+--------------------| | 8MB | (1) 1M x 36 | NONE | |------------------+--------------------+--------------------| | 12MB | NONE | (1) 2M x 36 | |------------------+--------------------+--------------------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | |------------------+--------------------+--------------------| | 16MB | (1) 1M x 36 | (1) 2M x 36 | |------------------+--------------------+--------------------| | 20MB | NONE | (1) 4M x 36 | |------------------+--------------------+--------------------| | 20MB | (1) 4M x 36 | NONE | |------------------+--------------------+--------------------| | 24MB | (1) 1M x 36 | (1) 4M x 36 | |------------------+--------------------+--------------------| | 24MB | (1) 4M x 36 | (1) 1M x 36 | |------------------+--------------------+--------------------| | 28MB | (1) 4M x 36 | (1) 2M x 36 | |------------------+--------------------+--------------------| | 36MB | (1) 4M x 36 | (1) 4M x 36 | |------------------------------------------------------------| | Note: Bank 0 contains 4MB & is factory installed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (PENTIUM) | |------------------------------------------------------------| | Size | Bank 1 | Bank 2 | |--------------+------------------------+--------------------| | 8MB | NONE | NONE | |--------------+------------------------+--------------------| | 16MB | (1) 1M x 36 | (1) 1M x 36 | |--------------+------------------------+--------------------| | 16MB | (1) 2M x 36 | NONE | |--------------+------------------------+--------------------| | 20MB | (1) 1M x 36 | (1) 2M x 36 | |--------------+------------------------+--------------------| | 24MB | (1) 2M x 36 | (1) 2M x 36 | |--------------+------------------------+--------------------| | 24MB | (1) 4M x 36 | NONE | |--------------+------------------------+--------------------| | 28MB | (1) 1M x 36 | (1) 4M x 36 | |--------------+------------------------+--------------------| | 32MB | (1) 2M x 36 | (1) 4M x 36 | |--------------+------------------------+--------------------| | 40MB | (1) 4M x 36 | (1) 4M x 36 | |--------------+------------------------+--------------------| | 40MB | (1) 8M x 36 | NONE | |--------------+------------------------+--------------------| | 44MB | (1) 1M x 36 | (1) 8M x 36 | |--------------+------------------------+--------------------| | 48MB | (1) 2M x 36 | (1) 8M x 36 | |--------------+------------------------+--------------------| | 56MB | (1) 4M x 36 | (1) 8M x 36 | |--------------+------------------------+--------------------| | 72MB | (1) 8M x 36 | (1) 8M x 36 | |--------------+------------------------+--------------------| | 72MB | (1) 16M x 36 | NONE | |--------------+------------------------+--------------------| | 76MB | (1) 1M x 36 | (1) 16M x 36 | |--------------+------------------------+--------------------| | 80MB | (1) 2M x 36 | (1) 16M x 36 | |--------------+------------------------+--------------------| | 88MB | (1) 4M x 36 | (1) 16M x 36 | |--------------+------------------------+--------------------| | 104MB | (1) 8M x 36 | (1) 16M x 36 | |--------------+------------------------+--------------------| | 128MB | (1) 16M x 36 | (1) 16M x 36 | |------------------------------------------------------------| | Note: Bank 0 contains 8MB & is factory installed. When | | 128MB is installed, the on board memory is disabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Note: The location and bank configuration of cache is | | unknown. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP24 | JP25 | JP26 | |------------+-------------+-----------+---------------------| | 64KB | Open | Open | pins 1 & 2 closed | |------------+-------------+-----------+---------------------| | 128KB | Open | Closed | pins 2 & 3 closed | |------------+-------------+-----------+---------------------| | 256KB | Closed | Closed | pins 1 & 2 closed | |------------------------------------------------------------| | Note: The jumper settings for 512KB cache is unknown. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP11 | JP12 | JP13 | JP15 | JP18 | JP20 | JP27 | |---------+------+------+------+------+------+------+--------| | CX486M6 | 2 & | 1 & | 2 & | 2 & | 2 & | 1 & | Open | | | 3 | 2 | 3 | 3 | 3 | 2 | | |---------+------+------+------+------+------+------+--------| | CX486M7 | 2 & | 1 & | 1 & | 2 & | 2 & | 2 & | Open | | | 3 | 2 | 2 | 3 | 3 | 3 | | |---------+------+------+------+------+------+------+--------| | CXM6 & | 2 & | 1 & | 2 & | 2 & | 2 & | 1 & | Open | | C6 | 3 | 2 | 3 | 3 | 3 | 2 | | |---------+------+------+------+------+------+------+--------| | 80486 | 1 & | 1 & | 1 & | 1 & | 2 & | 2 & | Open | | | 2 | 2 | 2 | 2 | 3 | 3 | | |---------+------+------+------+------+------+------+--------| | P24T | 1 & | 2 & | 1 & | 2 & | 1 & | 2 & | Closed | | | 2 | 3 | 2 | 3 | 2 | 3 | | |------------------------------------------------------------| | Note: The jumper settings for the Pentium processor are | | unknown. Pins designated should be in the closed position. | | The location of JP18 is unknown. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP7 | JP8 | JP9 | JP10 | JP17 | |----------+---------+---------+---------+---------+---------| | 25MHz | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | |----------+---------+---------+---------+---------+---------| | 33MHz | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | |----------+---------+---------+---------+---------+---------| | 40MHz | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 | |----------+---------+---------+---------+---------+---------| | 50iMHz | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | |----------+---------+---------+---------+---------+---------| | 50MHz | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | |----------+---------+---------+---------+---------+---------| | 66iMHz | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | |------------------------------------------------------------| | Note: The jumper settings for the Pentium processor are | | unknown. Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | MISCELLANEOUS TECHNICAL NOTE | |------------------------------------------------------------| | Note:Not all options listed in this document are available | | on each motherboard. | +------------------------------------------------------------+