CSS LABORATORIES, INC. MB-4864 Processor 80486SX/SL80486SX/UMCU5/80486DX/SL80486DX/CXM7/ AM486DX2/AM486DX2+/80486DX2/SL80486DX2/SL80486DX4/ AM486DX5/P24D/CX M1SC/P24T Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ Speed 100(internal)/133(internal)MHz Chip Set ALI Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 128/256/512KB BIOS AMI Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Parallel port J4 Turbo LED JP31 IDE interface 1 J5 Speaker JP32 Floppy drive J6 Power LED & JP33 interface keylock IDE interface 2 J7 Front panel JP36 connector Serial port 2 J8 Reset switch JP38/pins 1 & 2 Serial port 1 J9 Turbo LED JP38/pins 3 & 4 External battery JP1 Auxiliary keyboard JX1 connector IDE interface LED JP27 PS/2 mouse JX2 2 interface IDE interface LED JP28 32-bit PCI slots PC1 – PC3 1 Turbo switch JP30 USER CONFIGURABLE SETTINGS Function Label Position » Factory configured - do not JP14 Unidentified alter (flash BIOS) » Factory configured - do not JP23 Unidentified alter Internal RTC enabled JP24 Open Internal RTC disabled JP24 Closed Internal keyboard enabled JP26 Open Internal keyboard disabled JP26 Closed » Factory configured - do not JP29 Unidentified alter » Factory configured - do not JP35 Unidentified alter (IDE master) » Factory configured - do not JP37 Unidentified alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 4MB (1) 1M x 36 None None 8MB (1) 1M x 36 (1) 1M x 36 None 8MB (1) 2M x 36 None None 10MB (1) 1M x 36 (1) 1M x 36 (1) 512K x 36 10MB (1) 2M x 36 (1) 512K x 36 None 12MB (1) 2M x 36 (1) 1M x 36 None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 14MB (1) 2M x 36 (1) 1M x 36 (1) 512K x 36 16MB (1) 4M x 36 None None 16MB (1) 2M x 36 (1) 2M x 36 None 20MB (1) 4M x 36 (1) 1M x 36 None 20MB (1) 4M x 36 (1) 512K x 36 (1) 512K x 36 22MB (1) 4M x 36 (1) 1M x 36 (1) 512K x 36 24MB (1) 4M x 36 (1) 2M x 36 None 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 26MB (1) 4M x 36 (1) 2M x 36 (1) 512K x 36 28MB (1) 4M x 36 (1) 2M x 36 (1) 1M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 32MB (1) 8M x 36 None None 32MB (1) 4M x 36 (1) 4M x 36 None 34MB (1) 8M x 36 (1) 512K x 36 None 34MB (1) 4M x 36 (1) 4M x 36 (1) 512K x 36 36MB (1) 8M x 36 (1) 512K x 36 (1) 512K x 36 38MB (1) 8M x 36 (1) 512K x 36 (1) 1M x 36 40MB (1) 8M x 36 (1) 2M x 36 None 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 42MB (1) 8M x 36 (1) 2M x 36 (1) 512K x 36 44MB (1) 8M x 36 (1) 2M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 4M x 36 None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 50MB (1) 8M x 36 (1) 4M x 36 (1) 512K x 36 52MB (1) 8M x 36 (1) 4M x 36 (1) 1M x 36 56MB (1) 8M x 36 (1) 4M x 36 (1) 2M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 16M x 36 None None 64MB (1) 8M x 36 (1) 8M x 36 None 66MB (1) 8M x 36 (1) 8M x 36 (1) 512K x 36 68MB (1) 8M x 36 (1) 8M x 36 (1) 1M x 36 68MB (1) 16M x 36 (1) 1M x 36 None 70MB (1) 16M x 36 (1) 1M x 36 (1) 512K x 36 72MB (1) 16M x 36 (1) 2M x 36 None 72MB (1) 16M x 36 (1) 1M x 36 (1) 1M x 36 74MB (1) 16M x 36 (1) 2M x 36 (1) 512K x 36 76MB (1) 16M x 36 (1) 2M x 36 (1) 1M x 36 80MB (1) 16M x 36 (1) 4M x 36 None 80MB (1) 16M x 36 (1) 2M x 36 (1) 2M x 36 82MB (1) 16M x 36 (1) 4M x 36 (1) 512K x 36 84MB (1) 16M x 36 (1) 4M x 36 (1) 1M x 36 88MB (1) 16M x 36 (1) 4M x 36 (1) 2M x 36 96MB (1) 16M x 36 (1) 8M x 36 None 96MB (1) 16M x 36 (1) 4M x 36 (1) 4M x 36 98MB (1) 16M x 36 (1) 8M x 36 (1) 512K x 36 100MB (1) 16M x 36 (1) 8M x 36 (1) 1M x 36 104MB (1) 16M x 36 (1) 8M x 36 (1) 2M x 36 112MB (1) 16M x 36 (1) 8M x 36 (1) 4M x 36 128MB (1) 16M x 36 (1) 16M x 36 None 128MB (1) 16M x 36 (1) 8M x 36 (1) 8M x 36 Note: Board accepts x 32 SIMMs. 512KB x 32/36 is not recommended. CACHE CONFIGURATION Size Bank 0 TAG 128KB (4) 32K x 8 (1) 8K/16K/32K x 8 256KB (4) 64K x 8 (1) 16K/32K x 8 512KB (4) 128K x 8 (1) 32K x 8 Note: The location of bank 0 & the TAG is unidentified. CACHE JUMPER CONFIGURATION Size JP21 JP22 128KB Open Open 256KB Open Closed 512KB Closed Closed CPU SPEED SELECTION Speed JP15 JP16 JP17 JP18 JP25 25MHz Closed Open Open 1 & 2 Open 33MHz Closed Open Closed 1 & 2 Open 40MHz Open Closed Closed 2 & 3 Closed 50iMHz Closed Open Open 1 & 2 Open 66iMHz Closed Open Closed 1 & 2 Open 75iMHz Closed Open Open 1 & 2 Open 80iMHz Open Closed Closed 2 & 3 Closed 100iMHz Closed Open Closed 1 & 2 Open 133iMHz Closed Open Closed 1 & 2 Open Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP5 JP6 JP7 JP8 JP9 80486SX Open Open 1 & 2 Open Open SL80486SX Closed Open 3 & 4 3 & 4 3 & 4 UMC U5 Open Open 1 & 2 1 & 2 1 & 2 80486DX Open Open 1 & 2 Open Open SL80486DX Closed Open 3 & 4 3 & 4 3 & 4 CX M7 Closed Open 5 & 6 5 & 6 5 & 6 AM486DX2 Open Closed 1 & 2 Open Open AM486DX2-66 Open Closed 1 & 2 Open Open AM486DX2-80 Open Closed 1 & 2 Open Open AM486DX2-100 Open Closed 1 & 2 Open Open AM486DX2+-66 Closed Open 3 & 4 3 & 4 3 & 4 AM486DX2+-80 Closed Open 3 & 4 3 & 4 3 & 4 AM486DX2+-100 Closed Open 3 & 4 3 & 4 3 & 4 80486DX2 Open Open 1 & 2 Open Open SL80486DX2 Closed Open 3 & 4 3 & 4 3 & 4 SL80486DX4 Closed Open 3 & 4 3 & 4 3 & 4 AM486DX5 Open Open 1 & 2 Open Open P24D Closed Open 3 & 4 3 & 4 3 & 4 CX M1SC Closed Open 3 & 4 3 & 4 3 & 4 P24T Closed Open 3 & 4 3 & 4 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP10 JP11 JP12 JP13 JP34 80486SX Open 1 & 2 1 & 2 Open Open SL80486SX Open 1 & 2 1 & 2 Open Open UMC U5 Open 1 & 2 1 & 2 Open Open 80486DX Open 1 & 2 2 & 3 2 & 3 Open SL80486DX Open 1 & 2 2 & 3 2 & 3 Open CX M7 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2 AM486DX2 Open 1 & 2 2 & 3 2 & 3 Open AM486DX2-66 Open 1 & 2 2 & 3 2 & 3 Open AM486DX2-80 Open 1 & 2 2 & 3 2 & 3 Open AM486DX2-100 Open 1 & 2 2 & 3 2 & 3 Open AM486DX2+-66 1 & 3, 5 2 & 3 2 & 3 2 & 3 2 & 3 & 6 AM486DX2+-80 1 & 3, 5 2 & 3 2 & 3 2 & 3 2 & 3 & 6 AM486DX2+-100 5 & 6 2 & 3 2 & 3 2 & 3 2 & 3 80486DX2 Open 1 & 2 2 & 3 2 & 3 Open SL80486DX2 Open 1 & 2 2 & 3 2 & 3 Open SL80486DX4 Open 1 & 2 2 & 3 2 & 3 Open AM486DX5 Open 1 & 2 2 & 3 2 & 3 Open P24D 5 & 6 2 & 3 2 & 3 2 & 3 2 & 3 CX M1SC 5 & 6 2 & 3 2 & 3 2 & 3 2 & 3 P24T Open 2 & 3 2 & 3 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage JP2 JP3 JP4 3.3v Pins 2 & 3 Pins 2 & 3 Pins 7 & 8 closed closed closed 3.45v Pins 2 & 3 Pins 2 & 3 Pins 5 & 6 closed closed closed 3.6v Pins 2 & 3 Pins 2 & 3 Pins 3 & 4 closed closed closed 4v Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 5v Pins 1 & 2 Pins 1 & 2 Open closed closed DMA CHANNEL SELECTION Channel JP19 JP20 » 1 Pins 2 & 3 closed Pins 2 & 3 closed 3 Pins 1 & 2 closed Pins 1 & 2 closed