FIRST INTERNATIONAL COMPUTER, INC. LEO 486-VIP Processor 80486SX/80486SL/80487SX/CX486DX/80486DX/80486DX2 80486DX4/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 219mm x 271mm I/O Options 32-bit VESA local bus slots (2), 32-bit PCI slots (3), PS/2 mouse port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location PS/2 mouse port CN2 Green status LED J5 3.3V daughter board CN5 32-bit VESA Local S1 (80486DX4 only) bus slot Turbo switch CN6 32-bit VESA Local S2 bus slot Turbo LED CN7 32-bit PCI slot PCI1 Reset switch CN8 32-bit PCI slot PCI2 Speaker CN9 32-bit PCI slot PCI3 Power LED & keylock CN10 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color J2 Closed Monitor type select J2 Open monochrome/EGA/VGA » CMOS memory normal operation J3 Open CMOS memory clear J3 Closed » Normal operation J7 Open Password clear J7 Closed » CPU select Cyrix DX JT1 pins 1 & 2 closed CPU select Cyrix DX2 JT1 pins 2 & 3 closed » 80486DX4 3X mode JT2 pins 1 & 2 closed 80486DX4 2X mode JT2 pins 2 & 3 closed » Pentium Overdrive internal JT3 pins 1 & 2 write-back cache closed Pentium Overdrive internal JT3 pins 2 & 3 write-through cache closed » Pentium Overdrive disabled JT4 pins 1 & 2 closed Pentium Overdrive enabled JT4 pins 2 & 3 closed » Normal operation JT5 pins 1 & 2 closed For card that uses A31 JT5 pins 2 & 3 closed » Address area is proogrammed in JT6 pins 1 & 2 VT82C505 closed Supports IRQ15 when SMI# is used JT6 pins 2 & 3 closed » Factory configured - do not alter JT7 pins 1 & 2 closed » Factory configured - do not alter JT8 pins 1 & 2 closed » Factory configured - do not alter JT9 pins 1 & 2 closed » Normal operation JT10 pins 2 & 3 closed PCI IDE card is installed JT10 pins 1 & 2 closed » Factory configured - do not alter JT11 pins 1 & 2 closed » Factory configured - do not alter JX2 pins 2 & 3 closed NoteJumper JT5 and JT6 cannot be closed at the same time. 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) 1M x 36 NONE 5MB (4) 1M x 9 NONE (1) 1M x 36 5MB NONE (1) 256K x 36 (1) 1M x 36 5MB NONE (1) 1M x 36 (1) 256K x 36 DRAM CONFIGURATION (CONTINUED) Size Bank 0 Bank 1 Bank 2 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) 256K x 9 (1) 256K x 36 (1) 256K x 36 8MB (4) 256K x 9 (1) 1M x 36 NONE 8MB (4) 256K 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) 256K x 9 (1) 256K x 36 (1) 1M x 36 9MB (4) 256K x 9 (1) 1M x 36 (1) 256K x 36 12MB (4) 256K x 9 (1) 1M x 36 (1) 1M 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) 1M x 36 (1) 4M x 36 17MB NONE (1) 4M x 36 (1) 256K x 36 17MB (4) 4M x 9 (1) 1M 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 (1) 256K x 36 (1) 4M x 36 NONE 20MB (4) 1M x 9 NONE (1) 4M x 36 20MB (4) 4M x 9 (1) 4M x 36 NONE 20MB (4) 4M x 9 NONE (1) 4M x 36 20MB NONE (1) 4M x 36 (1) 4M x 36 20MB NONE (1) 4M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 21MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 21MB (4) 1M x 9 (1) 1M x 36 (1) 4M x 36 21MB (4) 1M x 9 (1) 4M x 36 (1) 1M x 36 21MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 21MB (4) 4M x 9 (1) 4M x 36 (1) 1M x 36 24MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 24MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 24MB (4) 4M x 9 (1) 4M x 36 (1) 4M 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 32MB NONE (1) 4M x 36 NONE 32MB NONE NONE (1) 16M x 36 33MB (4) 256K x 9 (1) 4M x 36 (1) 4M x 36 33MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 33MB (4) 4M x 9 (1) 4M x 36 (1) 1M x 36 DRAM CONFIGURATION (CONTINUED) Size Bank 0 Bank 1 Bank 2 36MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 36MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 36MB (4) 4M x 9 (1) 4M x 36 (1) 1M 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) 256K x 36 NONE 65MB (4) 16M x 9 NONE (1) 1M x 36 66MB (4) 16M x 9 (1) 256K x 36 (1) 256K 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) 256K x 36 (1) 1M x 36 69MB (4) 16M x 9 (1) 1M x 36 (1) 256K 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) 256K x 36 (1) 4M x 36 81MB (4) 16M x 9 (1) 16M x 36 (1) 1M x 36 84MB (4) 16M x 9 (1) 4M x 36 (1) 4M x 36 84MB (4) 16M x 9 (1) 4M x 36 (1) 4M x 36 96MB (4) 16M x 9 (1) 4M x 36 (1) 4M x 36 KEYBOARD CONFIGURATION Select JRN4 JRN5 JRN6 JRN7 Internal Installed Not Installed Not installed installed External Not Installed Not Installed installed installed 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 JC2 JC3 JC4 JP1 JT12 JX1 80486SX pins 2 pins 2 Open pins 1 pins 1 pins 1 & 3 & 3 & 2 & 2 & 2 80487SX pins 1 pins 1 pins 2 pins 1 pins 1 pins 1 & 2 & 2 & 3 & 2 & 2 & 2 CX486S pins 2 pins 2 Open pins 2 pins 2 pins 2 & 3 & 3 & 3 & 3 & 3 Intel SL N/A N/A N/A pins 2 pins 1 pins 2 enhanced & 3 & 2 & 3 AM486DXL N/A N/A N/A pins 1 pins 1 pins 1 & 2 & 2 & 2 80486DX pins 1 pins 1 pins 1 pins 1 pins 1 pins 1 & 2 & 2 & 2 & 2 & 2 & 2 CX486DX pins 1 pins 1 pins 1 pins 2 pins 2 pins 2 & 2 & 2 & 2 & 3 & 3 & 3 80486DX2 pins 1 pins 1 pins 1 pins 1 pins 1 pins 1 & 2 & 2 & 2 & 2 & 2 & 2 80486DX4 pins 1 pins 1 pins 1 pins 1 pins 1 pins 1 & 2 & 2 & 2 & 2 & 2 & 2 Pentium pins 1 pins 1 pins 2 pins 1 pins 1 pins 1 Overdrive & 2 & 2 & 3 & 2 & 2 & 2 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CONTINUED) Type JN1 JN2 JRN1 JRN2 JRN3 80486SX Open Open N/A N/A N/A 80487SX Open Open N/A N/A N/A CX486S Open Open Not Not Installed installed installed Intel SL Open Open Not Installed Not enhanced installed installed AM486DXL Open Open Installed Not Not installed installed 80486DX Open Open Not Not Not installed installed installed CX486DX Open Open Not Not Installed installed installed 80486DX2 Open Open Not Not Not installed installed installed 80486DX4 Open Open Not Installed Not installed installed Pentium Closed Closed Not Installed Not Overdrive installed installed CPU SPEED CONFIGURATION Speed JCK0 JCK1 JCK2 JCK3 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 VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION CPU speed Wait states JV1 JV2 < 33MHz 0 wait states pins 1 & 2 pins 1 & 2 closed closed > 33MHz 1 wait state pins 2 & 3 pins 2 & 3 closed closed