UNIDENTIFIED F4DXL-UC4 Processor UMCU5/80486SX/IBM486DX/CX486DX/AM486DX/80486DX/IBM486DX2/ CX486DX2/AM486DX2/80486DX2/IBM486DX4/CX486DX4/AM486DX4/ 80486DX4/P24T Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ Speed 100(internal)MHz Chip Set UMC Max. 144MB Onboard DRAM Cache 64/128/256KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED D1 Turbo switch JP27 External battery JP1 Speaker JP28 Green PC LED JP24 Power LED & keylock JP29 Green PC connector JP25 32-bit VESA local SL1 - SL3 bus slots Reset switch JP26 Note: The location of D1 is unidentified. USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 Pins 2 & 3 closed CMOS memory clear JP1 Pins 3 & 4 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB None None (4) 256K x 9 4MB None None (4) 1M x 9 4MB (1) 1M x 36 None None 5MB (1) 1M x 36 None (4) 256K x 9 8MB (1) 1M x 36 None (4) 1M x 9 8MB (1) 1M x 36 (1) 1M x 36 None 8MB (1) 2M x 36 None None 9MB (1) 1M x 36 (1) 1M x 36 (4) 256K x 9 12MB (1) 1M x 36 (1) 1M x 36 (4) 1M x 9 16MB None None (4) 4M x 9 16MB (1) 2M x 36 (1) 2M x 36 None 16MB (1) 4M x 36 None None 20MB (1) 1M x 36 None (4) 4M x 9 24MB (1) 2M x 36 None (4) 4M x 9 32MB (1) 2M x 36 (1) 2M x 36 (4) 4M x 9 32MB (1) 4M x 36 None (4) 4M x 9 32MB (1) 8M x 36 None None 48MB (1) 4M x 36 (1) 4M x 36 (4) 4M x 9 64MB (1) 8M x 36 (1) 8M x 36 None 64MB (1) 16M x 36 None None 128MB (1) 16M x 36 (1) 16M x 36 None 144MB (1) 16M x 36 (1) 16M x 36 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 None (1) 8K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 None (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP7 JP8 JP9 JP10 64KB Open Open Open Pins 2 & 3 closed 128KB Open Closed Pins 1 & 2 Pins 1 & 2 closed closed 256KB (A) Closed Closed Pins 2 & 3 Pins 2 & 3 closed closed 256KB (B) Closed Closed Pins 1 & 2, 3 Pins 1 & 2 & 4 closed closed CPU TYPE CONFIGURATION Type JP11 JP12 JP13 JP17 UMC U5 2 & 3 2 & 3 2 & 3 3 & 4 80486SX Open 2 & 3 2 & 3 Open IBM486DX 1 & 2, 3 & 1 & 2, 3 & 2 & 3 Open 4 4, 5 & 6 CX486DX 1 & 2, 3 & 1 & 2, 3 & 2 & 3 Open 4 4, 5 & 6 AM486DX Open 2 & 3 1 & 2, 3 & 1 & 2 4 80486DX Open 2 & 3 1 & 2, 3 & 1 & 2 4 IBM486DX2 1 & 2, 3 & 1 & 2, 3 & 1 & 2, 3 & 1 & 2 4, 5 & 6 4, 5 & 6 4 CX486DX2 1 & 2, 3 & 1 & 2, 3 & 1 & 2, 3 & 1 & 2 4, 5 & 6 4, 5 & 6 4 AM486DX2 Open 2 & 3 1 & 2, 3 & 1 & 2 4 AM486DX2-80 2 & 3 2 & 3 1 & 2, 3 & 1 & 2, 3 & 4 4 80486DX2 Open 2 & 3 1 & 2, 3 & 1 & 2 4 80486DX2-66 (OD) 1 & 2, 4 & 1 & 2, 4 & 1 & 2, 3 & 1 & 2 5 5 4 IBM486DX4 1 & 2, 3 & 1 & 2, 3 & 1 & 2, 3 & 1 & 2 4, 5 & 6 4, 5 & 6 4 CX486DX4 1 & 2, 3 & 1 & 2, 3 & 1 & 2, 3 & 1 & 2 4, 5 & 6 4, 5 & 6 4 AM486DX4 2 & 3 2 & 3 1 & 2, 3 & 1 & 2, 3 & 4 4 80486DX4 1 & 2 1 & 2 1 & 2, 3 & 1 & 2 4 P24T 1 & 2 1 & 2 1 & 2, 3 & 2 & 3 4 Note: Pins designated should be in the closed position. If AM486DX2-80 CPU is used, jumper JP12 pin 4 & JP20 pin 3 also. CPU TYPE CONFIGURATION (CON’T) Type JP18 JP19 JP20 UMC U5 1 & 2 Open Open 80486SX Open Open Open IBM486DX 2 & 3, 4 & 5 2 & 3, 4 & 5 Open CX486DX 2 & 3, 4 & 5 2 & 3, 4 & 5 Open AM486DX Open Open Open 80486DX Open Open Open IBM486DX2 2 & 3, 4 & 5 2 & 3 Open CX486DX2 2 & 3, 4 & 5 2 & 3 Open AM486DX2 Open Open Open AM486DX2-80 1 & 2 Open 1 & 2 80486DX2 Open Open Open 80486DX2-66 (OD) 3 & 4, 5 & 6 1 & 2, 3 & 4 Open IBM486DX4 2 & 3, 4 & 5 2 & 3 Open CX486DX4 2 & 3, 4 & 5 2 & 3 Open AM486DX4 1 & 2 Open Open 80486DX4 5 & 6 1 & 2, 3 & 4 Open P24T 5 & 6 1 & 2, 3 & 4 Open Note: Pins designated should be in the closed position. If AM486DX2-80 CPU is used, jumper JP12 pin 4 & JP20 pin 3 also. CPU SPEED CONFIGURATION Speed JP4 JP5 JP6 25MHz Open Open Closed 33MHz Closed Closed Closed 40MHz Open Closed Closed 50iMHz Open Open Closed 50MHz Closed Open Open 66iMHz Closed Closed Closed 75iMHz Open Open Closed 80iMHz Open Closed Closed 100iMHz Closed Closed Closed CPU VOLTAGE CONFIGURATION Voltage JP14 JP15 JP16 JP23 » 3.3v Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Closed closed closed closed 4v Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Open closed closed closed 5v Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Open closed closed closed closed closed closed