INTEL CORPORATION 4DX2-66 Processor 80486DX/ODP486DX/80486DX2/80486DX4/P24D/P24T Processor 25/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Video Chip Cirrus Logic Set Maximum 64MB Onboard Memory Maximum 1MB Video Memory Cache 128KB BIOS Phoenix Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VESA feature connector, VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VESA feature connector CN1 IDE interface 1 J21 PS/2 mouse port J1 Power LED & keylock J29 VGA port J4 Reset switch J32 Serial port 1 J12 IDE interface LED J34 Serial port 2 J13 Speaker J37 Parallel port J17 Turbo LED J40 Floppy drive interface J18 Chassis fan power J41 IDE interface 2 J19 32-bit PCI slots PC1 - PC3 USER CONFIGURABLE SETTINGS Function Label Position » Secondary IDE DMA disabled J26 Pins 2 & 3 closed Secondary IDE DMA enabled J26 Pins 1 & 2 closed » Password normal operation J31 Open Password clear J31 Closed » Boot block normal operation J35 Pins 2 & 3 closed Boot block boot from floppy J35 Pins 1 & 2 closed » On board I/O enabled J36 Pins 2 & 3 closed On board I/O disabled J36 Pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 4MB (1) 1M x 36 None 8MB (1) 1M x 36 (1) 1M x 36 8MB (1) 2M x 36 None 12MB (1) 2M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 16MB (1) 4M x 36 None 20MB (1) 4M x 36 (1) 1M x 36 24MB (1) 4M x 36 (1) 2M x 36 32MB (1) 4M x 36 (1) 4M x 36 32MB (1) 8M x 36 None 36MB (1) 1M x 36 (1) 8M x 36 40MB (1) 2M x 36 (1) 8M x 36 48MB (1) 4M x 36 (1) 8M x 36 64MB (1) 8M x 36 (1) 8M x 36 Note: Board also accepts x 32 SIMMs. Banks are interchangeable. DRAM TYPE CONFIGURATION Type J30 x 32 SIMMs Pins 2 & 3 closed x 36 SIMMs Pins 1 & 2 closed CACHE CONFIGURATION Size Bank 0 128KB 128KB Note: The location of bank 0 is unidentified. The size of the cache chips are unidentified. CACHE JUMPER CONFIGURATION Size J24 J25 128KB Pins 2 & 3 closed Pins 2 & 3 closed VIDEO MEMORY CONFIGURATION Note: Board is factory installed with 1MB of video memory and is not configurable. The location is unidentified. CPU SPEED SELECTION Speed J39 25MHz Pins 2 & 3 closed 50iMHz Pins 2 & 3 closed 66iMHz Pins 1 & 2 closed 75iMHz Pins 2 & 3 closed 100iMHz Pins 1 & 2 closed CPU TYPE SELECTION Type J38 80486DX Pins 3 & 4 closed ODP486DX Pins 1 & 2 closed 80486DX2 Pins 3 & 4 closed 8086DX4 Pins 3 & 4 closed P24D Pins 5 & 6 closed P24T Pins 5 & 6 closed CPU TYPE SELECTION Type J27 » SL-series Pins 2 & 3 closed Non SL-series Pins 1 & 2 closed Note: Do not change this from the default setting. CPU MULTIPLIER SELECTION Multiplier J33 Reserved Pins 1 & 2 closed 2x Pins 2 & 3 closed » 3x Open CPU VOLTAGE SELECTION Voltage J3 3.3v Pins 1 & 3, 2 & 4 closed » 5v Pins 3 & 5, 4 & 6 closed DMA CHANNEL SELECTION Channel J22 J23 » 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed