UNIDENTIFIED 486UL (VER. 1) Processor 80486SX/80487SX/ODP486/80486DX/80486DX2 Processor Speed 25/33/40/50(internal)/50/66(internal)MHz Chip Set UMC Video Chip Set None Maximum Onboard Memory 64MB Maximum Video Memory None Cache 64/128/256KB BIOS AMI/Award Dimensions 250mm x 220mm I/O Options 32-bit VESA local bus slots (3) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Power LED & keylock J5 Turbo LED J2 Reset switch J6 Turbo switch J3 32-bit VESA local bus SL1 - SL3 slots Speaker J4 USER CONFIGURABLE SETTINGS Function Label Position Turbo switch enabled/controlled by KBD J3 Open CTRL, ALT - (low), CTRL, ALT + (high) Turbo switch disabled J3 Closed » Any VESA card installed JP9 1 & 2 Weitek Power 9000 VESA card installed JP9 2 & 3 DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 None None None 1MB None None None (1) 256K x 36 2MB (4) 256K x 9 (4) 256K x 9 None None 2MB None None (1) 256K x (1) 256K x 36 36 2MB None None None (1) 512K x 36 3MB (4) 256K x 9 (4) 256K x 9 (1) 256K x None 36 3MB None None (1) 256K x (1) 512K x 36 36 3MB None (4) 256K x 9 (1) 256K x (1) 256K x 36 36 4MB (4) 256K x 9 (4) 256K x 9 (1) 512K x None 36 4MB (4) 1M x 9 None None None 4MB None None (1) 512K x (1) 512K x 36 36 4MB None None None (1) 1M x 36 5MB (4) 256K x 9 (4) 1M x 9 None None 5MB (4) 256K x 9 None None (1) 1M x 36 5MB None None (1) 256K x (1) 1M x 36 36 5MB (4) 1M x 9 None (1) 256K x None 36 6MB (4) 1M x 9 None (1) 512K x None 36 6MB None (4) 256K x 9 (1) 1M x 36 (1) 256K x 36 7MB None (4) 256K x 9 (1) 512K x (1) 1M x 36 36 7MB None (4) 1M x 9 (1) 512K x (1) 256K x 36 36 8MB (4) 1M x 9 (4) 1M x 9 None None 8MB (4) 1M x 9 None (1) 1M x 36 None 8MB None None (1) 1M x 36 (1) 1M x 36 8MB None None None (1) 2M x 36 9MB (4) 256K x 9 None (1) 2M x 36 None 9MB (4) 1M x 9 (4) 1M x 9 (1) 256K x None 36 10MB (4) 1M x 9 (4) 1M x 9 (1) 512K x None 36 10MB (4) 256K x 9 (4) 256K x 9 (1) 2M x 36 None 10MB None None (1) 512K x (1) 2M x 36 36 12MB (4) 1M x 9 (4) 1M x 9 (1) 1M x 36 None 12MB (4) 1M x 9 None (1) 2M x 36 None 12MB None None (1) 1M x 36 (1) 2M x 36 13MB None (4) 1M x 9 (1) 256K x (1) 2M x 36 36 16MB (4) 1M x 9 (4) 1M x 9 (1) 2M x 36 None 16MB None (4) 1M x 9 (1) 1M x 36 (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 16MB (4) 4M x 9 None None None 16MB None None (1) 2M x 36 (1) 2M x 36 17MB (4) 256K x 9 (4) 4M x 9 None None 18MB (4) 4M x 9 None (1) 512K x None 36 19MB None (4) 4M x 9 (1) 512K x (1) 256K x 36 36 20MB (4) 1M x 9 (4) 4M x 9 None None 20MB (4) 4M x 9 None (1) 1M x 36 None 21MB None (4) 4M x 9 (1) 256K x (1) 1M x 36 36 22MB (4) 1M x 9 (4) 4M x 9 (1) 512K x None 36 24MB (4) 4M x 9 None (1) 2M x 36 None 25MB None (4) 4M x 9 (1) 256K x (1) 2M x 36 36 28MB (4) 1M x 9 (4) 4M x 9 (1) 2M x 36 None 32MB (4) 4M x 9 (4) 4M x 9 None None 33MB (4) 4M x 9 (4) 4M x 9 (1) 256K x None 36 34MB (4) 4M x 9 (4) 4M x 9 (1) 512K x None 36 36MB (4) 4M x 9 (4) 4M x 9 (1) 1M x 36 None 40MB (4) 4M x 9 (4) 4M x 9 (1) 2M x 36 None 64MB (4) 16M x 9 None None None 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 (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE RESISTOR CONFIGURATION Size RN6 RN7 RN8 64KB Installed Not installed Not installed 128KB Not installed Installed Not installed 256KB Not installed Not installed Installed CPU SPEED SELECTION Speed J22 JP3 JP4 JP5 25MHz Pins 1 & 2 Closed Open Open closed 33MHz Pins 1 & 2 Closed Closed Closed closed 40MHz Pins 1 & 2 Closed Closed Open closed 50iMHz Pins 1 & 2 Closed Open Open closed 50MHz Pins 2 & 3 Open Open Closed closed 66iMHz Pins 1 & 2 Closed Closed Closed closed CPU TYPE SELECTION Type JP1 JP2 80486SX Pins 2 & 3 closed Open 80487SX Pins 1 & 2, 3 & 4 Pins 2 & 3 closed closed ODP486 Pins 1 & 2, 3 & 4 Pins 2 & 3 closed closed 80486DX Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 80486DX2 Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed VL BUS WAIT STATE SELECTION Setting JP13 0 Open » 1 Closed VL-BUS SPEED SELECTION CPU speed JP12 <= 33MHz Open >33 MHz Closed