FIRST INTERNATIONAL COMPUTER, INC. 486-GT Processor CX486S/CX487S/80486SL/80486SX/CX486DX/80486DX/ODP486SX/ 80486DX2/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)MHz Speed Chip Set VIA Max. Onboard 96MB DRAM Cache 64/128/256KB BIOS Award Dimensions 330mm x 218mm I/O Options None NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Reset switch J8 Turbo switch J2 Speaker J9 Green Power supply J3 Power LED & keylock J10 connector Turbo LED J6 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select monochrome, J4 Open EGA or VGA Monitor type select color J4 Closed » Adaptec ISA master installed J5 Closed Adaptec ISA master not installed J5 Open » CMOS memory normal operation J7 Open CMOS memory clear J7 Closed » Cyrix clock 2 x mode JC8 pins 1 & 2 closed Cyrix clock 1 x mode JC8 pins 2 & 3 closed » Factory configured - do not alter JP1 pins 1 & 2 closed » Factory configured - do not alter JP3 pins 1 & 2 closed » Pentium Overdrive write-back CPU JT1 pins 1 & 2 installed closed Pentium Overdrive write-through JT1 pins 2 & 3 CPU installed closed » Factory configured - do not alter JX1 pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB (4) 256K x 9 NONE NONE 1MB NONE (1) 1M x 36 NONE 1MB NONE NONE (1) 1M x 36 2MB (4) 256K x 9 (1) 1M x 36 NONE 2MB NONE (1) 1M x 36 (1) 1M x 36 2MB (4) 256K x 9 NONE (1) 1M x 36 3MB (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 4MB (4) 1M x 9 NONE NONE 4MB NONE (1) 4M x 36 NONE 4MB NONE NONE (1) 4M x 36 5MB (4) 256K x 9 (1) 4M x 36 NONE 5MB (4) 256K x 9 NONE (1) 4M x 36 5MB (4) 1M x 9 (1) 1M x 36 NONE 5MB (1) 1M x 9 NONE (1) 1M x 36 5MB NONE (1) 1M x 36 (1) 4M x 36 5MB NONE (1) 4M x 36 (1) 1M x 36 6MB (4) 256K x 9 (1) 4M x 36 (1) 1M x 36 6MB (4) 256K x 9 (1) 1M x 36 (1) 4M x 36 6MB (1) 1M x 9 (1) 1M x 36 (1) 1M x 36 8MB (1) 1M x 9 (1) 4M x 36 NONE 8MB (1) 1M x 9 NONE (1) 4M x 36 8MB NONE (1) 4M x 36 (1) 4M x 36 9MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 9MB (1) 1M x 9 (1) 1M x 36 (1) 4M x 36 9MB (1) 1M x 9 (1) 4M x 36 (1) 1M x 36 12MB (1) 1M x 9 (1) 4M x 36 (1) 4M x 36 16MB (1) 4M x 9 NONE NONE 16MB NONE (1) 16M x 36 NONE 16MB NONE NONE (1) 16M x 36 DRAM CONFIGURATION (CONT.) Size Bank 0 Bank 1 Bank 2 17MB (4) 256K x 9 (1) 16M x 36 NONE 17MB (4) 256K x 9 NONE (1) 16M x 36 17MB NONE (1) 1M x 36 (1) 16M x 36 17MB NONE (1) 16M x 36 (1) 1M x 36 17MB (1) 4M x 9 (1) 1M x 36 NONE 17MB (1) 4M x 9 NONE (1) 1M x 36 18MB (4) 256K x 9 (1) 1M x 36 (1) 16M x 36 18MB (4) 256K x 9 (1) 16M x 36 (1) 1M x 36 18MB (1) 4M x 9 (1) 1M x 36 (1) 1M x 36 20MB (1) 1M x 9 (1) 16M x 36 NONE 20MB (1) 1M x 9 NONE (1) 16M x 36 20MB (1) 4M x 9 (1) 4M x 36 NONE 20MB (1) 4M x 9 NONE (1) 4M x 36 20MB NONE (1) 4M x 36 (1) 16M x 36 20MB NONE (1) 16M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 16M x 36 21MB (4) 256K x 9 (1) 16M x 36 (1) 4M x 36 21MB (1) 1M x 9 (1) 1M x 36 (1) 16M x 36 21MB (1) 1M x 9 (1) 16M x 36 (1) 1M x 36 21MB (1) 4M x 9 (1) 1M x 36 (1) 4M x 36 21MB (1) 4M x 9 (1) 4M x 36 (1) 1M x 36 24MB (1) 1M x 9 (1) 4M x 36 (1) 16M x 36 24MB (1) 1M x 9 (1) 16M x 36 (1) 4M x 36 24MB (1) 4M x 9 (1) 4M x 36 (1) 4M x 36 32MB (1) 4M x 9 (1) 16M x 36 NONE 32MB (1) 4M x 9 NONE (1) 16M x 36 32MB NONE (1) 16M x 36 (1) 16M x 36 32MB NONE (1) 32M x 36 NONE 32MB NONE NONE (1) 32M x 36 33MB (4) 256K x 9 (1) 16M x 36 (1) 16M x 36 33MB (1) 4M x 9 (1) 1M x 36 (1) 16M x 36 33MB (1) 4M x 9 (1) 16M x 36 (1) 1M x 36 36MB (1) 1M x 9 (1) 16M x 36 (1) 16M x 36 36MB (1) 4M x 9 (1) 4M x 36 (1) 16M x 36 36MB (1) 4M x 9 (1) 16M x 36 (1) 4M x 36 48MB (1) 4M x 9 (1) 16M x 36 (1) 16M x 36 64MB (1) 16M x 9 NONE NONE 64MB NONE (1) 32M x 36 (1) 32M x 36 65MB (1) 16M x 9 (1) 1M x 36 NONE 65MB (1) 16M x 9 NONE (1) 1M x 36 66MB (1) 16M x 9 (1) 1M x 36 (1) 1M x 36 68MB (1) 16M x 9 (1) 4M x 36 NONE 68MB (1) 16M x 9 NONE (1) 4M x 36 69MB (1) 16M x 9 (1) 1M x 36 (1) 4M x 36 69MB (1) 16M x 9 (1) 4M x 36 (1) 1M x 36 DRAM CONFIGURATION (CONT.) Size Bank 0 Bank 1 Bank 2 72MB (1) 16M x 9 (1) 4M x 36 (1) 4M x 36 80MB (1) 16M x 9 (1) 16M x 36 NONE 80MB (1) 16M x 9 NONE (1) 16M x 36 81MB (1) 16M x 9 (1) 1M x 36 (1) 16M x 36 81MB (1) 16M x 9 (1) 16M x 36 (1) 1M x 36 84MB (1) 16M x 9 (1) 4M x 36 (1) 16M x 36 84MB (1) 16M x 9 (1) 16M x 36 (1) 4M x 36 96MB (1) 16M x 9 (1) 16M x 36 (1) 16M x 36 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 JUMPER CONFIGURATION Size JS1 JS2 JS3 64KB pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 128KB pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 256KB pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed CPU TYPE CONFIGURATION Type JC1 JC2 JC3 JC4 JC5 JC7 JCX1 CX486S 2 & 2 & Closed Open Open 1 & Open 3 3 2 CX486S/CX487S 1 & 1 & Closed Open Open 1 & Closed 2 2 2 CX487S 1 & 1 & Closed Open Open 1 & Closed 2 2 2 80486SL 1 & 1 & Closed Open Closed 1 & Open 2 2 2 80486SX 2 & 2 & Open Open Closed 1 & Open 3 3 2 CX486DX 1 & 1 & Closed Open Open 1 & Closed 2 2 2 80486DX 1 & 1 & Closed Open Closed 1 & Open 2 2 2 ODP486SX 1 & 1 & Closed Open Closed 1 & Open 2 2 2 80486DX2 1 & 1 & Closed Open Closed 1 & Open 2 2 2 Pentium 1 & 1 & Open Closed Open 2 & Open Overdrive 2 2 3 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CONT.) Type JCX2 JP2 JX2 RN12 RN13 CX486S pins 2 pins 2 pins 2 Not Installed & 3 & 3 & 3 installed 80486SL pins 1 pins 2 pins 2 Installed Not installed & 2 & 3 & 3 80486SX pins 1 pins 2 pins 2 Not Not installed & 2 & 3 & 3 installed CX486DX pins 1 pins 2 pins 2 Not Installed & 2 & 3 & 3 installed 80486DX pins 1 pins 1 pins 1 Not Not installed & 2 & 2 & 2 installed ODP486SX pins 1 pins 2 pins 2 Installed Not installed & 2 & 3 & 3 80486DX2 pins 1 pins 1 pins 1 Not Not installed & 2 & 2 & 2 installed Pentium pins 1 pins 1 pins 1 Installed Not installed Overdrive & 2 & 2 & 2 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed JK1 JK2 JK3 JK4 25MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 33MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed closed 40MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 50iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 50MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed 66iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed closed KEYBOARD CONTROL SELECT Keyboard JX3 RN1 RN2 Internal pins 2 & 3 Not installed Installed closed External pins 1 & 2 Installed Not installed closed MISCELLANEOUS TECHNICAL NOTES When U15 is installed JP5 and JP6 should be set to pins 2 & 3 closed. When U15 is not installed, JP5 and JP6 should be set to pins 1 & 2 closed. The exact location for U15 is unknown. The exact function of X2 is unknown.