GEMLIGHT COMPUTER, LTD. GMB-486UNP (VER. 3.01) Processor CX486S(WB)/CX486S(WT)/CX486S2(WB)/CX486S2(WT)/80486SX/ 80487SX/CX486DX(WB)/CX486DX(WT)/CX486DX2(WB)/CX486DX2(WT)/80486DX/80486DX2 Processor 25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set Unidentified Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 32/64/128/256KB BIOS AMI Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3) Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location External battery J2 Turbo switch J51 pins 15 - 17 Power LED & J51 pins 1 - 5 Reset switch J51 pins 19 & keylock 20 Speaker J51 pins 7 - 32-bit VESA SL1 - SL3 10 local bus slots Turbo LED J51 pins 12 & 13 USER CONFIGURABLE SETTINGS Function Label Position » Monitor type select color JP32 Closed Monitor type select monochrome JP32 Open » CMOS memory normal operation JP33 Pins 1 & 2 closed CMOS memory clear JP33 Pins 2 & 3 closed » Factory configured - do not JP74 Unidentified alter » Factory configured - do not JP75 Unidentified alter » Factory configured - do not JP76 Unidentified alter » Factory configured - do not JP77 Unidentified alter » VL-BUS clock adjust normal JP118 Pins 1 & 2 closed operation VL-BUS clock adjust reserved JP118 Pins 2 & 3 closed » Factory configured - do not JP121 Unidentified alter » Factory configured - do not JP122 Pins 1 & 2 closed alter » Factory configured - do not JP123 Open alter » Factory configured - do not JP124 Open alter » Factory configured - do not JP125 Open alter » Factory configured - do not JXN Pins 1 & 2 closed alter 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 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 None 20MB (4) 4M x 9 (4) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 64MB (4) 16M x 9 None 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 32KB (4) 8K x 8 None (1) 8K x 8 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 JUMPER CONFIGURATION Size JP5 JP7 JP58 32KB Open Open Pins 2 & 3 closed 64KB Closed Open Pins 1 & 2 closed 128KB Closed Closed Pins 1 & 2, 3 & 4 closed 256KB Closed Closed Pins 1 & 2, 4 & 5 closed CPU SPEED SELECTION Speed JP34 JP35 JP36 25MHz Closed Open Closed 33MHz Closed Closed Open 40MHz Open Open Closed 50iMHz Closed Open Closed 50MHz Open Closed Open 66iMHz Closed Closed Open CPU TYPE SELECTION Type JP25 JP28 JP30 CX486S (WB) Closed Open Pins 5 & 6 closed CX486S (WT) Closed Open Pins 5 & 6 closed CX486S2 (WB) Closed Open Pins 5 & 6 closed CX486S2 (WT) Closed Open Pins 5 & 6 closed 80486SX (PQFP) Open Open Open 80486SX (PGA) Closed Open Pins 5 & 6 closed 80487SX Closed Open Pins 1 & 2, 4 & 5, 6 & 7 closed CX486DX (WB) Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed CX486DX (WT) Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed CX486DX2 (WB) Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed CX486DX2 (WT) Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed 80486DX Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed 80486DX2 Closed Open Pins 2 & 3, 4 & 5, 6 & 7 closed P24T Closed Open Pins 1 & 2, 4 & 5, 6 & 7 closed CPU TYPE SELECTION (CON’T) Type JP70 JP72 JP80 JP120 CX486S (WB) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 Open closed closed closed CX486S (WT) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Open closed closed closed CX486S2 (WB) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 Closed closed closed closed CX486S2 (WT) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Closed closed closed closed 80486SX Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open (PQFP) closed closed closed 80486SX (PGA) Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open closed closed closed 80487SX Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open closed closed closed CX486DX (WB) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 Open closed closed closed CX486DX (WT) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Open closed closed closed CX486DX2 (WB) Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 Closed closed closed closed CX486DX2 (WT) Pins 2 & 3 Pins 1 & 2 Pins 1 & 2 Closed closed closed closed 80486DX Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open closed closed closed 80486DX2 Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open closed closed closed P24T Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 Open closed closed closed