MICRONICS COMPUTERS, INC. ========================= LPX54 (REV. 3A) Processor Pentium Processor 75/90/100MHz Speed Chip Set VLSI Max. Onboard 128MB DRAM Cache 256/512KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options PS/2 mouse port, parallel port, serial ports (2), VGA port, VGA feature connector, floppy drive interface, IDE interfaces (2), riser slot NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | PS/2 mouse port | J6 | Riser slot | SL1 | |------------------+----------+-------------------+----------| | Floppy drive | J10 | Turbo switch | W12 | | interface | | | | |------------------+----------+-------------------+----------| | Serial port 1 | J11 | Turbo LED | W13 | |------------------+----------+-------------------+----------| | Serial port 2 | J12 | Reset switch | W15 | |------------------+----------+-------------------+----------| | Parallel port | J13 | Speaker | W16 | |------------------+----------+-------------------+----------| | IDE interface 2 | J14 | Auxiliary | W18 | | | | keyboard | | | | | connector | | |------------------+----------+-------------------+----------| | IDE interface 1 | J15 | Power LED & | W19 | | | | keylock | | |------------------+----------+-------------------+----------| | VGA feature | J17 | IDE interface LED | W27 | | connector | | | | |------------------+----------+-------------------+----------| | VGA port | J18 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Cache type select write back | W1 | Open | |---+----------------------------------+--------+------------| | | Cache type select write through | W1 | Closed | |---+----------------------------------+--------+------------| |>> | Flash BIOS normal mode | W9 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | Flash BIOS recovery mode | W9 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Flash BIOS write protect | W10 | Closed | | | disabled | | | |---+----------------------------------+--------+------------| | | Flash BIOS write protect enabled | W10 | Open | |---+----------------------------------+--------+------------| |>> | CMOS memory normal operation | W17 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | CMOS memory clear | W17 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Monitor type select color | W20 | Closed | |---+----------------------------------+--------+------------| | | Monitor type select monochrome | W20 | Open | |---+----------------------------------+--------+------------| |>> | PS/2 mouse installed | W21 | Closed | |---+----------------------------------+--------+------------| | | PS/2 mouse not installed | W21 | Open | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W32 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W33 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W34 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W35 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W36 | pins 1 & 2 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W37 | pins 2 & 3 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W39 | pins 2 & 3 | | | alter | | closed | |---+----------------------------------+--------+------------| |>> | On board VGA enabled | W40 | Open | |---+----------------------------------+--------+------------| | | On board VGA disabled | W40 | Closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W41 | Closed | | | alter | | | |---+----------------------------------+--------+------------| |>> | VGA hardware enabled | W42 | Open | |---+----------------------------------+--------+------------| | | VGA hardware disabled | W42 | Closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W43 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W44 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W45 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | W46 | pins 2 & 3 | | | alter | | closed | |------------------------------------------------------------| | Note: The location of W46 is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 8MB | (2) 1M x 36 | NONE | |------------------+--------------------+--------------------| | 16MB | (2) 1M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 16MB | (2) 2M x 36 | NONE | |------------------+--------------------+--------------------| | 24MB | (2) 2M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 32MB | (2) 4M x 36 | NONE | |------------------+--------------------+--------------------| | 32MB | (2) 2M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 40MB | (2) 4M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 48MB | (2) 4M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 64MB | (2) 8M x 36 | NONE | |------------------+--------------------+--------------------| | 64MB | (2) 4M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 72MB | (2) 8M x 36 | (2) 1M x 36 | |------------------+--------------------+--------------------| | 80MB | (2) 8M x 36 | (2) 2M x 36 | |------------------+--------------------+--------------------| | 96MB | (2) 8M x 36 | (2) 4M x 36 | |------------------+--------------------+--------------------| | 128MB | (2) 8M x 36 | (2) 8M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | VRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |--------------+----------------------+----------------------| | 1MB | (2) 256K x 16 | NONE | |--------------+----------------------+----------------------| | 2MB | (2) 256K x 16 | (2) 256K x 16 | |------------------------------------------------------------| | Note: Bank 0 is factory installed and is not configurable. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |----------------+---------------------+---------------------| | 256KB | (8) 32K x 8 | NONE | |----------------+---------------------+---------------------| | 512KB | (8) 32K x 8 | (8) 32K x 8 | |------------------------------------------------------------| | Note: Bank 0 is factory installed and is not configurable. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | W6 | W7 | W8 | |-------+-----------------+-----------------+----------------| | 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 512KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | W3 | W4 | W5 | W38 | |------------+-----------+-----------+-----------+-----------| | 75MHz | Closed | Closed | Open | Open | |------------+-----------+-----------+-----------+-----------| | 90MHz | Closed | Open | Closed | Open | |------------+-----------+-----------+-----------+-----------| | 100MHz | Open | Closed | Open | Closed | |------------------------------------------------------------| | Note: The location of W38 is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU CLOCK SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | W2 | |------------------------------+-----------------------------| | 1.5x | Open | |------------------------------+-----------------------------| | 2x | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DMA CONFIGURATION | |------------------------------------------------------------| | DMA | W22 | W23 | |------------------+--------------------+--------------------| | None | Open | Open | |------------------+--------------------+--------------------| | DMA 1 | pins 1 & 2 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | DMA 3 | pins 2 & 3 closed | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DMA CONFIGURATION | |------------------------------------------------------------| | DMA | W25 | W26 | |------------------+--------------------+--------------------| | None | Open | Open | |------------------+--------------------+--------------------| | DMA 6 | pins 1 & 2 closed | pins 1 & 2 closed | |------------------+--------------------+--------------------| | DMA 7 | pins 2 & 3 closed | pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | PCI CONFIGURATION | |------------------------------------------------------------| | IDE 1 IRQ | IDE 2 | W24 | W28 | W29 | | | IRQ | | | | |-------------+---------+--------------+--------+------------| |>> | IRQ 14 | IRQ 15 | pins 2 & 3 | Open | pins 1 & 2 | | | | | closed | | closed | |---+---------+---------+--------------+--------+------------| | | None | None | Open | Open | Open | |---+---------+---------+--------------+--------+------------| | | None | IRQ 15 | pins 2 & 3 | Open | Open | | | | | closed | | | |---+---------+---------+--------------+--------+------------| | | PCI INT | None | Open | Closed | Open | | | A | | | | | |---+---------+---------+--------------+--------+------------| | | PCI INT | IRQ 15 | pins 2 & 3 | Closed | Open | | | A | | closed | | | |---+---------+---------+--------------+--------+------------| | | IRQ 14 | None | Open | Open | pins 1 & 2 | | | | | | | closed | +------------------------------------------------------------+