SIEMENS NIXDORF INFORMATIONSSYSTEME AG SYSTEM BOARD PCD-4LSX, SYSTEM BOARD PCD-H Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/40/50(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 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 interface CN7 Parallel port CN2 Speaker J13 Serial port 2 CN3 External battery J14 Serial port 1 CN4 VGA feature connector J23 PS/2 mouse port CN5 Front panel connector JP30 IDE interface CN6 Riser slot SL1 USER CONFIGURABLE SETTINGS Function Label Position » Onboard battery enabled JP8 Pins 1 & 2 closed Onboard battery disabled JP8 Pins 2 & 3 closed » Monitor type select color JP10 Closed Monitor type select monochrome JP10 Open » Mouse IRQ12 enabled JP11 Closed Mouse IRQ12 disabled JP11 Open » On board video enabled JP25 Closed On board video disabled JP25 Open 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 (4) 8K x 8 None (1) 16K x 8 8 8 128KB (4) 32K None (4) 8K x 8 None (1) 16K x x 8 8 256KB (4) 32K (4) 32K (4) 8K x 8 (4) 8K x 8 (1) 16K x x 8 x 8 8 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 are 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 (PQFP) Pins 1 & 2 Pins 2 & 3 Closed closed closed 80486SX (PGA) Open Pins 1 & 2 Open closed 80486DX (PGA) Pins 1 & 2 Pins 2 & 3 Closed closed closed 80486DX2 (PGA) Pins 1 & 2 Pins 2 & 3 Closed closed closed