Page 1: ...OPTI 495SX 3 486 WB CACHE MOTHERBOARD VESA LOCAL BUS USER S MANUAL...
Page 2: ...80387 Operation 8 2 B Type CPU Assemble Cyrix 486DLC Operation I0 3 C Type CPU Assemble 386DX PQFP Up Grade To 48 6 PGA CPU 12 4 D Type CPU Assemble 486SX PQFP Operation 14 5 E Type CPU Assemble 486S...
Page 3: ...5 33 and 40MHz or 486 systems running from 25 33 and 50MHz It supports 386DX 486SX 486DX 486DX2 Cyrix 486DLC and Three 32 bit Local Bus The OPTI 495SX 3 486WB Cache motherboard also has an option to a...
Page 4: ...4MB 5MB 8MB l6MB 20MB 32MB 25 6KB l MB 4MB Module memory up to 32MB on board SRAM configuration 64KB 128 KB 256KB BIOS Subsystem Type AMI ROM BIOS Additional BIOS features Setup program resides in ROM...
Page 5: ...nerator 387 Coprocessor support for 386 mode Hidden refresh support to enhance system performance Copy back Direct mapped with size of 64KB 128KB 256KB Up to 32MB of local high speed page mode DRAM me...
Page 6: ...6SX PQFP 0 386DX J 19 PQFP D J P2BCD J P29 TB SW 0 J P3 JP9 a z 0 JPS O 0 q 8JP17 J P1 6 JP1 8 8JP25 J P33 J 1 QCl JP1 J2 BANK1 BANKO 0 i C I 55 5 C I C I C I C I G 0000 JP13 0DJP11 JP12 CJ 8 JP 15 JP...
Page 7: ...MM of assembly available for the OPTI 495SX 3 486WB Cache motherboard They are SIMM Module Used 256K IM 4MX9 of SIMM 4 Pcs BANKO 256K X 9 4 pcs 256K X 9 4 pcs IMX9 4pcs 256K X 9 4 pcs IM X 9 4 pcs 4M...
Page 8: ...le for the BANK 0 an i BANK 1 position BANK 0 INSTALL 021 022 023 024 BANK 1INSTALL 017 018 019 020 Please refer to the following figure for operating the SIM DRAM 1 30 6 1111111110 30 6 U17 ___ _ ___...
Page 9: ...s NONE 32KX8 x 128K CLOSE CLOSE CLOSE 2 3 32KX8 4 pcs 32KX8 4 pcs 8KX8 8KX8 256K CLOSE CLOSE CLOSE 2 3 32KX8 4 pcs 32KX8 4 pcs 32KX8 x 256K Please refer to the following for setting up the JP 15 JP 13...
Page 10: ...STEP I SET 386 MODE FOR PQFU PGA CPU TYPE JPS JPI 2 386 MODE 2 3 OPEN STEP 2 386 CPU CLOCK SELECT JUMPER SETTING FOR PQFP PGA CPU TYPE JUMPER 386DX 33 PQFP 386DX 40 PQFP JP25 2 3 2 3 JP33 1 2 1 2 JP28...
Page 11: ...2 JP25 JP28 JP29 JP3 3 JP3 JP5 I J20 486SX PQFP D J19 D TBISW z 0 g 0 q 8 3 JP1 6 JP25 JP33 1 JPJ JP9 J1 0CJ JP1 J D JJ n GO 8 ANK1 BANKO G OOOO m JP13 oo oaJP11 JP 12 B JP1 5 x JP10 4 86 _ D_ X_ C P...
Page 12: ...MODE CPU TYPE JPS JP12 JP6 JP7 JP18 386 MODE 2 3 OPEN CLOSE CLOSE CLOSE STEP 2 Cyrix 486DLC CPU CLOCK SELECT JUMPER SETTING JUMPER CPU TYPE 486DLC 33 486DLC 40 JP25 2 3 2 3 JP33 1 2 1 2 JP28 OPEN OPEN...
Page 13: ...8 JP29 JP33 JP6 JP7 JP18 JPS I x 0 a J P6 1 18 e JP7 g J20 486SX POFP D J 19 D JP28 JP29 TBISW J P9 z 0 0 q JP17 J P16 JP18 IJP25 JP33 G J2 D J3 n BO 8ANK1 BANKO 2 il N N N G OOOO i 00 D J P1 2 8 a JP...
Page 14: ...YPE SELECTION JUMPER SETTING JP36 JP37 JP35 USAGE CLOSE 1 2 1 2 486DX 486DX2 OPEN 2 3 OPEN 486SX CLOSE 1 2 2 3 487SX OVERDRIVE CLOSE 2 3 OPEN 486SX PQFP STEP 3 486 CPU CLOCK SELECT JUMPER SETTING FOR...
Page 15: ...JP35 JP36 JP37 JP25 JP33 JP28 JP29 386DX PGA PQFP 80486 CPU PGA position J 20 D J1 9 D JPsB JP7 JP5 I 486SX PQFP D q JP17 JP16 JP18 i I J 2s 486SX PQFP JP33 J2 D J3n GO BANK1 BANKO G 0000 I JP13 0CJP1...
Page 16: ...SELECT JUMPER SETTING FOR PQFP CPU TYPE JUMPER 486SX 25 PQFP 486SX 33 PQFP JP25 2 3 2 3 JP33 2 3 2 3 JP28 CLOSE OPEN JP29 OPEN CLOSE STEP 3 Please refer to the figure for the 80486SX PQFP CPU positio...
Page 17: ...setting up to JPS JP12 JP18 JP19 JP25 JP33 JP28 JP29 J20 D J 19 D JP6 B JP JP5 I 486SX POFe JP28 JP29 J P9 D J2 D J3 n BO BANK1 BANKO G OOi JP 3 oaJP11 JP12 B JC P15 pj JP10 486DX CPU cri B DJP21 OJP...
Page 18: ...SE STEP 2 SET 486 CPU TYPE SELECTION JUMPER SETTING FOR PGA JP36 JP37 JP35 USAGE CLOSE 1 2 1 2 486DX 486DX2 OPEN 2 3 OPEN 486SX CLOSE 1 2 2 3 487SX OVERDRIVE STEP 3 486 CPU CLOCK SELECT JUMPER SETTING...
Page 19: ...figure for setting up to JPS JP1 2 JP1 7 JP35 JP36 JP37 JP25 JP33 JP28 JP29 486SX CPU PQFP 80486 CPU PGA position JP68 JP7 J20 D J 19 D JPS I RESET TB LED TB S 486SX CPU PQFPI JP23 JP2 P19 JP22 JP26 J...
Page 20: ...JP8 JP23 JP27 JPI9 JP21 JP14 USE PAL OPEN OPEN 1 2 1 2 OPEN OPEN OPEN NO USE CLOSE CLOSE 2 3 2 3 CLOSE CLOSE CLOSE STEP 2 VL BUS SPEED JUMPER SETTING VL Bus JP26 JP22 CPU 33MHz x OPEN SPEED 33MHz x CL...
Page 21: ...JP27 JP19 JP21 JP14 JP26 JP22 JP34 JP30 J 20 D J1 9 D 0 JP3 I JPS a a JPsB JP7 486SX POFP JP28 JP29 TB SW z 0 ii I q 8 JP17 JP16 JP18 B JP25 JP33 JP9 J PS JP19 JP27 JP22 JP26 JP30 JP34 19 Jl Q CJ JP1...
Page 22: ...CONNECTOR USAGE PIN DESCRIPTION J 19 KEYLOCK POWER LED 1 LED power J20 SPEAKER CONNECTOR CONNECTOR USAGE 120 SPEAKER JP31 TURBO SW CONNECTOR CONNECTOR USAGE JP3 l TURBO SW 2 not used 3 GROUND 4 keybo...
Page 23: ...ROUND 2 Reset in JPl EXTERNAL BATTERY CONNECTOR PIN DESCRIPTION 1 2 BATTERY DISCHARGE 2 3 short is internal battery 3 6V by used JP 1 2 3 Normal Operation Default JP 1 1 2 Clear CMOS Memory 206 Setup...
Page 24: ...J3 3 12Y de J3 4 12Y de J3 s GROUND J3 6 GROUND J3 7 GROUND J3 8 GROUND J3 9 SY de J3 10 SY de J3 11 SY de J3 12 SY de c Jao i IlliJ J I vOAOM Y lj mif gJ I ti Jl qg l r W m I 0 r c D L _j l C 1 81 1...
Page 25: ...MI BIOS SETUP PROGRAM AM AMI BIOS SETUP UTILITIES C 1992 American Megatrends Inc All Rights Reserved ISTANDARD CMOS SETUP I ADBANCED CMOS SETUP ADVANCED CHIPSET SETUP AUTO CONFIGURATION WITH BIOS DE F...
Page 26: ...e AMI BIOS SETUP PROGRAM STANDARD CMOS SETUP C 1992 American Megatrends Inc All Rights Reserved Date mm date year jwed Jul 01 Time hour min sec 19 35 25 1992 IrBase memory size 640 KB Ext memory size...
Page 27: ...EXIT DO NOT WRITE TO CMOS AND EXIT jAdvanced CMOS Setup for configuring System Optionsj ESC EXIT t Sel F2 F3 Color F10 Save Exit AMI BIOS SETUP PROGRAM WARNING INFORMATION C 1992 American Megatrends...
Page 28: ...00 16K Enabled Adaptor ROM Shadow CBOO 16K Disabled Adaptor ROM Shadow CCOO 16K Disabled Adaptor ROM Shadow DOOO 16K Disabled Adaptor ROM Shadow D400 16K Disabled Adaptor ROM Shadow DBOO 16K Disabled...
Page 29: ...S SETUP PROGRAM ADVANCED CHIPS ET SETUP Cl 1992 American Megatrends Inc All Rights Reserved 17 Hidden Refresh Enabled Note If Non Cache Then Set Disabled 486 AT BUS Clock Sleection CLKl 6 I Non Cache...
Page 30: ...TEM M B AMI BIOS SETUP PROGRAM ADVANCED CHIPSET SETUP C 1992 American Megatrends Inc Al l Rights Reserved I Hidden Refresh En abled Note If Non Cache Then Set Disabled 486 AT BUS Clock Sleection CLKl...
Page 31: ...STEM AMI BIOS SETUP PROGRAM ADVANCED CHIPSET SETUP C 1992 American Megatrends Inc All Rights Reserved Hidden Refresh Enabled 1Not If Non Cache Then Set Disabled 486 AT BUS Clock Selection CLKl 3 I Non...
Page 32: ...RATION Cyrix 486DLC 33 486DLC 40MHz 386DX 33 386DX 40MHz CPU SYSTEM M B AMI BIOS SETUP PROGRAM ADVANCED CHIPS ET SETUP C 1992 American Megatrends Inc All Rights Reserved Hidden Refresh Enabled 486 AT...
Page 33: ...CONFIGURATION WITH BIOS DEFAULTS AUTO CONFIGURATION WITH POWER ON DEFAULTS CHANGE PASSWORD HARD DIS K UTILITY IWRITE TO CMOS AND EXIT I DO NOT WRITE TO CMOS AND EXIT IWrite the settings to the CMOS an...
Page 34: ...time to select low speed Press CTRL ALT at the same time to select high speed Please review the following configuration CPU SPEED KEYBOARD CPU SPEED NORMAL CTRL ALT TURBO CPU SPEED CPU SPEED TURBO CT...
Page 35: ...tly improves the performance of BIOS call intensive applications Performance improvements as high as 300 to 400 have been observed in benchmark tests on the shadow RAM The shadow RAM feature is invoke...
Page 36: ...RAM MAPPCN WITH SHADOW RAM MORE THAN lMD 0 RAM SYSTEM MAPPING 4MB ADDRESS RAM 3FFFFFFH 3MB 300000H 2FFFFFH RAM 2MB 200000H RAM 1FFFFFH ROM I I 1MB 100000H V sHAoow RAM I OFFFFFH 640KB 01 OOOOH OKB RAM...
Page 37: ...ITH BIOS DEFAULTS AUTO CONFIGURATION WITH POWER ON DEFAULTS ICHANGE PASSWORD I HARD DISK UTILITY WRITE TO CMOS AND EXIT DO NOT WRITE TO CMOS AND EXIT IChange the User Password Stored in the CMOS j ESC...
Page 38: ...Exit AMI BIOS SETUP PROGRAM CHANGE PASSWORD C 1992 American Megatrends Inc All Rights Reserved I Re Enter NEW Password J USE Maximum 6 ASCII Characters ESC Exit NEXT SCREEN OF MEANING IS YOU HAVE FINI...
Page 39: ...NOT WRITE TO CMOS AND EXIT IFormat the Hard Disk Auto interleave Detection and Media Analysis ESC EXIT i t Sel F2 F3 Color F10 Save Exit AMIBIOS SETUP PROGRAM HARD DISK UTILITY C 1992 American Megatre...
Page 40: ...All Rights Reserved Cyln Hood WPcom LZone Sect Size MB Hard Disk C Type 33 1024 6 1024 1024 17 43 Hard Dis k D Type Not Installed Hard Disk Format Disk Drive C D C Disk Drive Type 33 Interl eave 1 16...
Page 41: ...pen JP22 open close close open open close JP23 1 2 1 2 1 2 1 2 1 2 1 2 JP24 open open open open open open JP25 2 3 2 3 2 3 2 3 2 3 2 3 JP26 open open open open open open JP27 1 2 1 2 1 2 1 2 1 2 1 2 J...
Page 42: ...lose open open open open JP23 1 2 1 2 1 2 1 2 1 2 1 2 JP24 open open open open open open JP2 i 2 3 1 2 2 3 2 3 2 3 2 3 JP26 open open open open open open JP27 1 2 1 2 1 2 1 2 1 2 1 2 JP28 close close...
Page 43: ...Printed in Taiwan...
