FIRST INTERNATIONAL COMPUTER, INC. 486-GIO-VT2 Processor CX486S/80486SX/CX486DX/AM486DX/AM486DXL/80486DX/80486DX2/ 80486DX4/P4S/P23S/P24C/P24CT/P24D/P24S/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set VIA Max. 64MB Onboard DRAM Cache 64/128/256KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (2), floppy drive interface, game port, Options green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse interface CN1 Turbo switch J12 Game interface CN2 Turbo LED J13 PS/2 mouse port CN4 Reset switch J14 Serial port 2 CN7 Speaker J15 Serial port 1 CN8 Power LED & keylock J16 Floppy drive CN9 Green PC connector J17 interface Parallel port CN10 Green PC connector J23 IDE interface CN11 Green PC connector J24 (primary) IDE interface CN12 IDE interface LED J25 (secondary) (secondary) External battery J1 32-bit VESA local SL1 & SL2 bus slots IDE interface LED J8 (primary) USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select J2 Open monochrome/EGA/VGA Monitor type select color J2 Closed » Battery type select internal J3 pins 2 & 3 closed Battery type select external J3 pins 1 & 2 closed » VESA IDE interface enabled J4 pins 1 & 2 closed VESA IDE interface disabled J4 pins 2 & 3 closed » CMOS memory normal operation J7 Open CMOS memory clear J7 Closed » Local HDD_BALE disabled J9 Open Local HDD_BALE enabled J9 Closed » Local HDD_IOCHRDY disabled J10 Open Local HDD_ IOCHRDY enabled J10 Closed » ISA HDD_BALE disabled J26 Open ISA HDD_BALE enabled J26 Closed » ISA HDD_IOCHRDY disabled J27 Open ISA HDD_ IOCHRDY enabled J27 Closed » AM486DXL2 speed select 2x J30 Closed AM486DXL2 speed select 3x J30 Open » Game port enabled J31 Closed Game port disabled J31 Open » CPU type select Intel SL and all JCX2 pins 1 & 2 others closed CX486S/DX P24D JCX2 pins 2 & 3 closed » Factory configured - do not alter JP1 pins 2 & 3 closed » Factory configured - do not alter JP2 pins 2 & 3 closed » Cache type select write through JT1 Open Cache type select write back JT1 Closed » Factory configured - do not alter JW1 N/A » Factory configured - do not alter JW2 N/A » Factory configured - do not alter JX1 pins 2 & 3 closed » IDE interface enabled JG pins 2 & 3 closed USER CONFIGURABLE SETTINGS (CON’T) Function Jumper Position IDE interface disabled JG pins 1 & 2 closed » Floppy drive interface enabled JH pins 2 & 3 closed Floppy drive interface disabled JH pins 1 & 2 closed » Parallel port unidirectional JI Closed (printer) Parallel port bidirectional JI Open Note: The location of jumpers JP1, JP2 & JX1 are unidentified DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 3MB (1) 256K x (1) 256K x (1) 256K x NONE 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x NONE 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB NONE (1) 1M x 36 (1) 2M x 36 NONE 12MB NONE NONE (1) 1M x 36 (1) 2M x 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 4M x 36 NONE NONE NONE 16MB NONE (1) 1M x 36 (1) 2M x 36 (1) 1M x 36 16MB NONE NONE (1) 2M x 36 (1) 2M x 36 17MB (1) 4M x 36 (1) 256K x NONE NONE 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x NONE 36 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 1M x 36 NONE NONE 21MB (1) 4M x 36 (1) 1M x 36 (1) 256K x NONE 36 22MB (1) 4M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 NONE 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 32MB NONE NONE (1) 8M x 36 NONE 33MB (1) 4M x 36 (1) 4M x 36 (1) 256K x NONE 36 34MB (1) 4M x 36 (1) 4M x 36 (1) 256K x (1) 256K x 36 36 36MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 NONE 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 48MB NONE (1) 4M x 36 (1) 8M x 36 NONE 48MB NONE NONE (1) 4M x 36 (1) 8M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB NONE (1) 4M x 36 (1) 8M x 36 (1) 4M x 36 64MB NONE NONE (1) 8M x 36 (1) 8M 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 CX486S pins 2 & 3 pins 2 & 3 Open pins 1 & 2 closed closed closed 80486SX pins 2 & 3 pins 2 & 3 Open pins 1 & 2 closed closed closed CX486DX pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed AM486DX pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed 80486DX pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed 80486DX2 pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed P4S pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed P23S pins 2 & 3 pins 2 & 3 Open pins 1 & 2 closed closed closed P24C pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed P24CT pins 1 & 2 pins 1 & 2 Closed pins 2 & 3 closed closed closed P24D pins 1 & 2 pins 1 & 2 Open pins 2 & 3 closed closed closed P24S pins 1 & 2 pins 1 & 2 Open pins 1 & 2 closed closed closed Pentium pins 1 & 2 pins 1 & 2 Closed pins 2 & 3 Overdrive closed closed closed CPU TYPE CONFIGURATION Type RN20 RN21 RN22 JC5 JC6 CX486S Not Installed Installed Open Open installed 80486SX Not Not Not Open Open installed installed installed CX486DX Not Installed Installed Open Open installed 80486DX Not Not Not Open Open installed installed installed AM486DXL Installed Not Not Open Open installed installed 80486DX2 Not Not Not Open Open installed installed installed P4S Not Not Not Closed Closed installed installed installed P23S Not Not Not Closed Closed installed installed installed P24C Not Installed Not Closed Closed installed installed P24CT Not Installed Not Closed Closed installed installed P24D Not Installed Not Closed Closed installed installed P24S Not Not Not Closed Closed installed installed installed P24T Not Not Not Closed Closed installed installed installed 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 75iMHz pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 100iMHz pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed closed CPU SPEED CONFIGURATION (80486DX4 ONLY) Speed J20 3x Open 2x pins 1 & 2 closed 2.5x pins 2 & 3 closed CPU VOLTAGE CONFIGURATION Setting PS1 3.3v Installed 5v pins 1 & 2, 3 & 4, 13 & 14, 15 & 16 closed VESA WAIT STATE CONFIGURATION Wait states JV3 0 wait states pins 2 & 3 closed 1 wait state pins 1 & 2 closed BUS SPEED CONFIGURATION CPU speed JV2 <= 33MHz pins 2 & 3 closed > 33MHz pins 1 & 2 closed PARALLEL PORT CONFIGURATION Setting JE JF 378 pins 1 & 2 closed pins 2 & 3 closed 278 pins 2 & 3 closed pins 1 & 2 closed 3BC pins 2 & 3 closed pins 2 & 3 closed Disabled pins 1 & 2 closed pins 1 & 2 closed PRINTER CONFIGURATION Type JW3 JW4 Printer pins 2 & 3 closed pins 2 & 3 closed EPP/SPP pins 2 & 3 closed pins 1 & 2 closed EPP/ECP pins 1 & 2 closed pins 2 & 3 closed EXT2FDD pins 1 & 2 closed pins 1 & 2 closed SERIAL PORT 1 CONFIGURATION Setting JA JB 3F8 pins 2 & 3 closed pins 1 & 2 closed 2E8 pins 2 & 3 closed pins 2 & 3 closed 3E8 pins 1 & 2 closed pins 2 & 3 closed Disabled pins 1 & 2 closed pins 1 & 2 closed SERIAL PORT 2 CONFIGURATION Setting JC JD 2F8 pins 2 & 3 closed pins 1 & 2 closed 2E8 pins 1 & 2 closed pins 2 & 3 closed 3E8 pins 2 & 3 closed pins 2 & 3 closed Disabled pins 1 & 2 closed pins 1 & 2 closed DMA CONFIGURATION DMA JW5 JW6 1 pins 1 & 2 closed pins 1 & 2 closed 3 pins 2 & 3 closed pins 2 & 3 closed IDE SPEED CONFIGURATION Speed J5 J6 1 pins 1 & 2 closed pins 2 & 3 closed 0 pins 2 & 3 closed pins 2 & 3 closed 2 pins 1 & 2 closed pins 1 & 2 closed