ADDTECH RESEARCH, INC. 4GLX4 Processor CX486SX/AM486SX/80486SX/80487SX/CX486DX/AM486DX/ 80486DX/CX486DX2(M7)/AM486DX2/80486DX2/P24D/P24T Processor Speed25/33/40/50(internal)/66(internal)MHz Chip Set Unidentified Video Chip Set None Maximum Onboard128MB Memory Maximum Video None Memory Cache 256/512/1024KB BIOS AMI Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slots (3) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery JP2 Turbo LED JP21 Power LED & keylock JP16 Reset switch JP26 Speaker JP17 32-bit VESA local SL1 - SL3 bus slots Turbo switch JP19 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP1 Pins 1 & 2 closed CMOS memory clear JP1 Pins 2 & 3 closed Jumper information unavailable JP3 Unidentified Jumper information unavailable JP4 Unidentified Flash BIOS voltage select 12v JP5 Pins 2 & 3 closed Flash BIOS voltage select 5v JP5 Pins 1 & 2 closed Jumper information unavailable JP18 Unidentified Jumper information unavailable JP20 Unidentified DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 None 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 None 5MB (4) 256K x 9 (4) 1M x 9 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 17MB (4) 256K x 9 (4) 4M x 9 17MB (4) 4M x 9 (4) 256K x 9 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 64MB (4) 16M x 9 None 65MB (4) 256K x 9 (4) 16M x 9 65MB (4) 16M x 9 (4) 256K x 9 68MB (4) 1M x 9 (4) 16M x 9 68MB (4) 16M x 9 (4) 1M x 9 80MB (4) 4M x 9 (4) 16M x 9 80MB (4) 16M x 9 (4) 4M x 9 128MB (4) 16M x 9 (4) 16M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 None (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 128K x 8 Note: The location of banks 0 & 1 are unidentified. CACHE JUMPER CONFIGURATION Size JP11 JP12 256KB Pins 1 & 2 closed Pins 1 & 2 closed 512KB Pins 2 & 3 closed Pins 2 & 3 closed 1MB Pins 2 & 4 closed Pins 2 & 3 closed CPU SPEED SELECTION Speed JP13 JP22 JP27 JP28 JP60 JP61 JP62 25MHz Closed Open 2 & 4 2 & 3 Closed 1 & 2 2 & 3 33MHz Open Open 2 & 4 2 & 3 Closed 2 & 3 1 & 2 40MHz Open Closed 2 & 3 1 & 2 Open 1 & 2 2 & 3 50iMHz Closed Open 2 & 4 2 & 3 Closed 1 & 2 2 & 3 50MHz Open Closed 1 & 2 1 & 2 Open 2 & 3 1 & 2 66iMHz Open Open 2 & 4 2 & 3 Closed 2 & 3 1 & 2 CPU TYPE SELECTION Type JP8 JP9 JP10 80486SX Pins 2 & 3 Open Open closed 80487SX Pins 1 & 2, 3 & Pins 1 & 2 Closed 4 closed closed 80486DX Pins 1 & 2, 3 & Pins 2 & 3 Open 4 closed closed 80486DX2 Pins 1 & 2, 3 & Pins 2 & 3 Open 4 closed closed P24D Pins 1 & 2, 3 & Pins 1 & 2 Closed 4 closed closed P24T Pins 1 & 2, 3 & Pins 1 & 2 Closed 4 closed closed CPU TYPE SELECTION Type JP15 Cyrix Pins 2 & 3 closed AMD Pins 1 & 2 closed Intel Pins 1 & 2 closed VL BUS WAIT STATE SELECTION Setting JP23 0 Open 1 Closed