MICRONICS COMPUTERS, INC. LPX54 (REV. 3A) Processor Pentium Processor Speed 75/90/100MHz Chip Set VLSI Max. Onboard DRAM 128MB 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 [Image] 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 keyboard W18 connector IDE interface 1 J15 Power LED & keylock W19 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 IRQ W24 W28 W29 » 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 A None Open Closed Open PCI INT A IRQ 15 pins 2 & 3 Closed Open closed IRQ 14 None Open Open pins 1 & 2 closed