SIEMENS NIXDORF INFORMATIONSSYSTEME AG SYSTEM BOARD PCD-4LDX Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 32MB Memory Maximum Video 2MB Memory Cache 64/128/256KB BIOS Unidentified Dimensions 330mm x 218mm I/O Options Ethernet 10Base5 connector, Ethernet 10BaseT connector, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VGA port CN1 Floppy drive CN8 interface Parallel port CN2 IDE interface CN9 Serial port 2 CN3 VGA feature connector CN10 Serial port 1 CN4 External battery CN11 PS/2 mouse port CN5 Speaker J13 Ethernet 10Base5 CN6 Front panel connector JP30 connector Ethernet 10BaseT CN7 Riser slot SL1 connector USER CONFIGURABLE SETTINGS Function Label Position ? Factory configured - do not CN12 Unidentified alter ? Factory configured - do not CN13 Unidentified alter ? Factory configured - do not CN14 Unidentified alter ? Internal speaker enabled J13 Pins 1 & 2 closed Internal speaker disabled J13 Open External speaker enabled J13 Closed ? Monitor type select color JP10 Closed Monitor type select monochrome JP10 Open ? PS/2 mouse IRQ12 enabled JP11 Closed PS/2 mouse IRQ12 disabled JP11 Open ? On board video enabled JP25 Closed On board video disabled JP25 Open ? LAN interface enabled JP31 Open LAN interface disabled JP31 Closed ? System booted from hard drive JP32 Open System booted from network JP32 Closed ? LAN type select 10BaseT JP37 Pins 1 & 2 closed LAN type select 10Base5 JP37 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 4MB (4) 1M x 9 None 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 20MB (4) 1M x 9 (4) 4M x 9 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG (U48) TAG (U49) TAG (U50) 64KB (4) 8K x (4) 8K x (1) 8K x 8 None (1) 16K x 8 8 4 128KB (4) 32K None (1) 8K x 8 None (1) 16K x x 8 4 256KB (4) 32K (4) 32K (1) 8K x 8 (1) 8K x 8 (1) 16K x x 8 x 8 4 Note: The location of banks 0 & 1 and the TAG are unidentified. CACHE JUMPER CONFIGURATION Size JP12 JP13 JP14 JP15 JP16 JP17 None 2 & 3 2 & 3 Open Open Open Open 64KB 2 & 3 2 & 3 Open Open Open Open 128KB 1 & 2 1 & 2 Closed Open Open Closed 256KB 2 & 3 2 & 3 Closed Closed Closed Closed Note: Pins designated should be in the closed position. VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 1MB 1MB None 2MB 1MB 1MB Note: The size of the video memory chips is unidentified. CPU SPEED SELECTION Speed JP5 JP6 25MHz Closed Open 33MHz Open Closed 50iMHz Closed Open 66iMHz Open Closed CPU TYPE SELECTION Type JP1 JP2 JP3 80486SX Open Pins 1 & 2 Open closed 80486DX Pins 1 & 2 Pins 2 & 3 Closed closed closed 80486DX2 Pins 1 & 2 Pins 2 & 3 Closed closed closed LAN DMA CHANNEL SELECTION Channel JP35 JP36 » 5 Pins 1 & 2 closed Pins 1 & 2 closed 6 Pins 3 & 4 closed Pins 3 & 4 closed LAN IRQ SELECTION IRQ JP34 None Open » IRQ5 Pins 1 & 2 closed IRQ9 Pins 3 & 4 closed IRQ10 Pins 5 & 6 closed IRQ11 Pins 7 & 8 closed LAN I/O ADDRESS SELECTION Setting JP33 » 300H Pins 1 & 2, 3 & 4 closed 320H Pins 3 & 4 closed 340H Pins 1 & 2 closed 360H Open