FIRST INTERNATIONAL COMPUTER, INC. 486-GVT-2 Processor CX486S/80486SX/CX487S/CX486DX/80486DX/80486DX2/Pentium Overdrive Processor 25/33/50(internal)/50/66(internal)/66MHz Speed Chip Set VIA Max. Onboard 96MB DRAM Cache 64/128/256KB BIOS AMI Dimensions 259mm x 218mm I/O Options 32-bit VESA local bus slots (2), PS/2 mouse port [Image] CONNECTIONS Purpose Location Purpose Location Turbo switch J1 Speaker J10 Green power supply J3 Power LED & keylock J11 External battery J4 PS/2 mouse port CN2 Turbo LED J8 Mouse connector CN4 Reset switch J9 32-bit VESA Local bus SL0 & SL1 slots USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select monochrome J2 Open Monitor type select color J2 Closed » CMOS memory normal operation J5 pins 2 & 3 (Internal Battery) closed CMOS memory normal operation J5 pins 1 & 2 (External Battery) closed » Transfer rate < 5.7MB/s J6 Open Adaptec ISA master SCSI card J6 Closed (transfer rate > 5.7MB/s) » CMOS memory normal operation J7 Closed CMOS memory clear J7 Open » Cyrix CPU 1X clock mode J12 pins 2 & 3 closed Cyrix CPU 2X clock mode J12 pins 1 & 2 closed 80486SX/P23S/P4S/CX486S disabled JC6 Closed 80486SX/P23S/P4S/CX486S enabled JC6 Open » Factory configured - do not alter JP1 pins 1 & 2 closed » IRQ 15 (regular CPU) JP2,JX2 pins 1 & 2 closed SMI (Cyrix/Intel S series) JP2,JX2 pins 2 & 3 closed » Local bus IDE interface disabled JP4 pins 1 & 2 closed Local bus IDE interface enabled (SL0 JP4 pins 2 & 3 only) closed » Factory configured - do not alter JP5 pins 1 & 2 closed P24T write back JT1 pins 1 & 2 closed P24T write through JT1 pins 2 & 3 closed » Intel S-series CPU JCX1 Open Cyrix CX486S/DX JCX1 Closed » Intel S-series CPU JCX2 pins 1 & 2 closed Cyrix CX486S/DX JCX2 pins 2 & 3 closed » CPU clock 1X JX1 pins 1 & 2 closed CPU clock 2X JX1 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 1MB (4) 256K x 9 NONE NONE 1MB NONE (1) 256K x 36 NONE 1MB NONE NONE (1) 256K x 36 2MB (4) 256K x 9 (1) 256K x 36 NONE 2MB NONE (1) 256K x 36 (1) 256K x 36 2MB (4) 256K x 9 NONE (1) 256K x 36 3MB (4) 256K x 9 (1) 256K x 36 (1) 256K x 36 4MB (4) 1M x 9 NONE NONE 4MB NONE (1) 1M x 36 NONE 4MB NONE NONE (1) 1M x 36 5MB (4) 256K x 9 (1) 1M x 36 NONE 5MB (4) 256K x 9 NONE (1) 1M x 36 5MB (4) 1M x 9 (1) 256K x 36 NONE 5MB (4) 1M x 9 NONE (1) 256K x 36 5MB NONE (1) 256K x 36 (1) 1M x 36 DRAM CONFIGURATION (CONTINUED) Size Bank 0 Bank 1 Bank 2 5MB NONE (1) 1M x 36 (1) 256K x 36 6MB (4) 256K x 9 (1) 1M x 36 (1) 256K x 36 6MB (4) 256K x 9 (1) 256K x 36 (1) 1M x 36 6MB (4) 1M x 9 (1) 256K x 36 (1) 256K x 36 8MB (4) 1M x 9 (1) 1M x 36 NONE 8MB (4) 1M x 9 NONE (1) 1M x 36 8MB NONE (1) 1M x 36 (1) 1M x 36 9MB (4) 256K x 9 (1) 1M x 36 (1) 1M x 36 9MB (4) 1M x 9 (1) 256K x 36 (1) 1M x 36 9MB (4) 1M x 9 (1) 1M x 36 (1) 256K x 36 12MB (4) 1M x 9 (1) 1M x 36 (1) 256K x 36 16MB (4) 4M x 9 NONE NONE 16MB NONE (1) 4M x 36 NONE 16MB NONE NONE (1) 4M x 36 17MB (4) 256K x 9 (1) 4M x 36 NONE 17MB (4) 256K x 9 NONE (1) 4M x 36 17MB NONE (1) 256K x 36 (1) 4M x 36 17MB NONE (1) 4M x 36 (1) 256K x 36 17MB (4) 4M x 9 (1) 256K x 36 NONE 17MB (4) 4M x 9 NONE (1) 256K x 36 18MB (4) 256K x 9 (1) 256K x 36 (1) 4M x 36 18MB (4) 256K x 9 (1) 4M x 36 (1) 256K x 36 18MB (4) 4M x 9 (1) 256K x 36 (1) 256K x 36 20MB (4) 1M x 9 (1) 4M x 36 NONE 20MB (4) 1M x 9 NONE (1) 4M x 36 20MB (4) 4M x 9 (1) 1M x 36 NONE 20MB (4) 4M x 9 NONE (1) 1M x 36 20MB NONE (1) 1M x 36 (1) 4M x 36 20MB NONE (1) 4M x 36 (1) 1M x 36 21MB (4) 256K x 9 (1) 1M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 1M x 36 21MB (4) 1M x 9 (1) 256K x 36 (1) 4M x 36 21MB (4) 1M x 9 (1) 4M x 36 (1) 256K x 36 21MB (4) 4M x 9 (1) 256K x 36 (1) 1M x 36 21MB (4) 4M x 9 (1) 1M x 36 (1) 256K x 36 24MB (4) 1M x 9 (1) 1M x 36 (1) 4M x 36 24MB (4) 1M x 9 (1) 4M x 36 (1) 1M x 36 24MB (4) 4M x 9 (1) 1M x 36 (1) 1M x 36 32MB (4) 4M x 9 (1) 4M x 36 NONE 32MB (4) 4M x 9 NONE (1) 4M x 36 32MB NONE (1) 4M x 36 (1) 4M x 36 33MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 33MB (4) 4M x 9 (1) 256K x 36 (1) 4M x 36 33MB (4) 4M x 9 (1) 4M x 36 (1) 256K x 36 DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 36MB (4) 4M x 9 (1) 4M x 36 (1) 256K x 36 36MB (4) 4M x 9 (1) 256K x 36 (1) 4M x 36 48MB (4) 4M x 9 (1) 4M x 36 (1) 4M x 36 64MB (4) 16M x 9 NONE NONE 65MB (4) 16M x 9 (1) 1M x 36 NONE 65MB (4) 16M x 9 NONE (1) 1M x 36 66MB (4) 16M x 9 (1) 1M x 36 (1) 1M x 36 68MB (4) 16M x 9 (1) 1M x 36 NONE 68MB (4) 16M x 9 NONE (1) 1M x 36 69MB (4) 16M x 9 (1) 1M x 36 (1) 1M x 36 69MB (4) 16M x 9 (1) 1M x 36 (1) 1M x 36 72MB (4) 16M x 9 (1) 1M x 36 (1) 1M x 36 80MB (4) 16M x 9 (1) 4M x 36 NONE 80MB (4) 16M x 9 NONE (1) 4M x 36 81MB (4) 16M x 9 (1) 1M x 36 (1) 1M x 36 81MB (4) 16M x 9 (1) 1M x 36 (1) 4M x 36 81MB (4) 16M x 9 (1) 4M x 36 (1) 1M x 36 84MB (4) 16M x 9 (1) 1M x 36 (1) 4M x 36 84MB (4) 16M x 9 (1) 4M x 36 (1) 1M x 36 96MB (4) 16M x 9 (1) 4M x 36 (1) 4M 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 CPU type RN13 RN14 RN16 CX486S & 487S/DX Not installed Not installed Installed SX/DX/DX2 Not installed Not installed Not installed P23S/P4S/P24S Installed Not installed Not installed P23S/P4S/CX486S Not installed Installed Not installed CPU TYPE CONFIGURATION CPU type JC1 JC2 JC3 JC4 JC5 JC7 CX486S 2 & 3 2 & 3 Closed Open Open 1 & 2 CX486S/487S 1 & 2 1 & 2 Closed Open Open 1 & 2 486SX/P23S 2 & 3 2 & 3 Open Open Closed 1 & 2 CX486DX 1 & 2 1 & 2 Closed Open Open 1 & 2 DX/DX2 1 & 2 1 & 2 Closed Open Closed 1 & 2 P24S/P4S 1 & 2 1 & 2 Closed Open Closed 1 & 2 P24T 1 & 2 1 & 2 Open Closed Open 2 & 3 Note: pins designated should be in the closed position. CPU CLOCK SELECT 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 50MHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed 66MHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed closed 80MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed 100MHz pins 1 & 2 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed closed VESA WAIT STATE/BUS SPEED CONFIGURATION CPU speed Wait states JV2 JV3 < 33MHz 0 wait states pins 1 & 2 pins 1 & 2 closed closed > 33MHz 1 wait state pins 2 & 3 pins 2 & 3 closed closed