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G486VPC rev. ba0+ system board user?s manual - 30061018 -
fcc statement on class b this equipment has been tested and found to comply with the limits for a class b digital device, pursuant to part 15 of the fcc rules. these limits are designed to provide reasonable protection against harmful in- terference when the equipment is operated in a residential installation. this equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. however, there is no guarantee that interference will not occur in a particular in- stallation. if this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ? reorient or relocate the receiving antenna. ? increase the separation between the equipment and the receiver. ? connect the equipment into an outlet on a circuit different from that to which the receiver is connected. ? consult the dealer or an experienced radio tv technician for help. notice: 1. the changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to oper- ate the equipment. 2. shielded interface cables must be used in order to comply with the emission limits. the manufacturer makes no warranties with respect to this documenta- tion and disclaims any implied warranties of merchantability, quality, or fitness for any particular purpose. the information in this document is subject to change without notice. the manufacturer reserves the right to make revisions to this publication and to make changes to any and/or all parts of its content, at any time, without obligation to notify any per- son or entity of such changes. further, the manufacturer assumes no responsibility for any errors that may appear in this document.
table of contents chapter 1: introduction ........................................................................... 5 features and specifications ............................................................... 6 package checklist .............................................................................. 8 chapter 2: hardware installation ............................................................ 9 preparing the area ............................................................................. 9 handling the system board ................................................................ 9 static electricity precautions ..................................................... 10 installing the system board .............................................................. 10 board layout .................................................................................... 12 system memory ............................................................................... 13 installing a sim module ............................................................. 13 memory configuration ...................................................................... 14 cache memory ................................................................................. 16 jumper settings for cache memory .......................................... 16 cpu installation ................................................................................ 16 jumper settings for cpu ........................................................... 17 installing upgrade cpus ............................................................ 21 jumper settings for pci slots ........................................................... 24 jumper settings for cmos clean .................................................... 25 jumper settings for eprom type .................................................... 25 factory testing jumpers ................................................................... 26 built-in ports ..................................................................................... 27 serial ports ................................................................................ 27 ps/2 mouse port ........................................................................ 27 parallel port ............................................................................... 28 floppy disk drive controller ...................................................... 28 ide hard disk interface ............................................................. 28 installing expansion cards. ....................................................... 31 chapter 3: software installation ........................................................... 32 award bios cmos setup utility ...................................................... 32 standard cmos setup .............................................................. 33 bios features setup ................................................................. 35 chipset features setup ............................................................. 36 power management setup ......................................................... 37 pci configuration setup ............................................................ 38 load bios defaults ................................................................... 38
4 load setup defaults .................................................................. 38 supervisor password ................................................................. 39 user password ........................................................................... 40 ide hdd auto detection ............................................................ 40 save & exit setup ...................................................................... 43 exit without saving .................................................................... 43 system error report ......................................................................... 44 chapter 4: troubleshooting checklist ................................................. 47 appendix a: types of modules ............................................................ 48 appendix b: memory and i/o maps ..................................................... 49 appendix c: pci i/o pin assignments ................................................ 51 appendix d: isa i/o pin assignments ................................................ 52 appendix e: system overview ............................................................ 53 appendix f: connector pin assignments .......................................... 55 appendix g: award bios hard disk table .......................................... 60
5 the G486VPC system board is an energy star compliant system board that reduces energy consumption by automatically turning off peripher- als when not in use. the G486VPC system board is equipped with a 237-pin zero insertion force (zif) cpu socket that allows users to easily upgrade their pro- cessor with intel, amd, cyrix or sgs-thomson cpus. the G486VPC system board uses award bios (windows 95 plug and play compatible) that supports enhanced ide hdds larger than 528mb. the G486VPC can support 1mb to 64mb of system memory using x32 or x36 dram. it also supports 128kb or 256kb level 1 and level 2 write-back/write-through cache. equipped with one built-in vl-bus ide connector and one isa ide con- nector, the G486VPC system board can control four drives and sup- ports fast mode 3 and mode 4 hdds. this system board is also equipped with two ns16c550a-compatible serial ports, an ecp/epp parallel port, a floppy disk drive controller, one ps/2 mouse port and one at or optional ps/2 keyboard connector. the G486VPC design is based on the peripheral component intercon- nect (pci) local bus and industry standard architecture (isa) stan- dards. it is equipped with 6 dedicated isa slots, and 1 shared pci/8-bit isa slot. chapter 1 introduction
6 features and specifications processor ? 5v cpus - intel, cyrix and sgs-thomson ? 3.3v cpus - intel, amd, cyrix and sgs-thomson chipset ? via vt82c496 - system and cache controller ? via vt82c505 - pci bridge ? via vt82c416 - peripheral chip cache memory ? 128kb or 256kb ? supports level 1 and level 2 write-back/write-through cache system memory ? 1mb to 128mb ? three 72-pin simm sockets ? supports memory parity-check function ? 256kbx36/x32, 1mbx36/x32, 4mbx36/x32, and 16mbx36/x32 (sm1- sm3) ? 512kbx36/x32, 2mbx36/x32, and 8mbx36/x32 (sm1 or sm3) bios ? award bios, windows 95 plug and play compatible (flash eprom or eprom) ? supports enhanced ide hdds larger than 528mb ? system and ega/vga bios shadow energy efficient design ? supports smm mode and cpu stopped clock ? hardware supports flexible event-driven power management scheme and easy cpu state transition: ready, doze and suspend ? microsoft apm 1.1 compliant ? epa energy star compliant design
7 integrated i/o ? uses umc super i/o controller ? two ns16c550a-compatible enhanced serial ports ? one ecp/epp parallel port ? supports 360kb, 720kb, 1.2mb, 1.44mb, and 2.88mb floppy drives ? two fast ide connectors: - primary ide is a vl-bus ide to support mode 3 and mode 4 hdds - secondary ide is an isa ide to support one tape drive and one atapi cd-rom drive zif socket ? 237-pin zif socket (intel socket 3) connectors ? 2 serial ports ? 1 parallel port ? 2 ide connectors ? 1 floppy connector ? 1 ps/2 mouse port ? 1 at keyboard connector or optional mini-din-6 ps/2 keyboard port expansion slots ? 6 dedicated 16-bit isa slots ? 1 shared pci/8-bit isa slot pcb ? four layers, baby at form factor ? 25cm (9.84") x 22cm (8.66")
8 package checklist the G486VPC package contains the following items: ? the G486VPC system board ? the G486VPC user?s manual ? one 40-pin ide hard disk cable ? one 34-pin floppy disk drive cable ? serial, mouse and printer port cables option 1: - one card-edge bracket with a 9-pin and 25-pin serial port cables - one card-edge bracket with a 25-pin printer port cable and a ps/ 2 mouse port cable option 2: - one card-edge bracket with two 9-pin serial port cables and a ps/2 mouse port cable - one 25-pin printer port cable for chassis mounting option 3: - one 25-pin printer port cable for chassis mounting - two 9-pin serial port cables for chassis mountign - one ps/2 mouse port cable for chassis mounting ? five jumper caps if any of these items are missing or damaged, please contact your dealer or sales representative for assistance.
9 chapter 2 hardware installation this chapter summarizes the steps to install the G486VPC system board into your system unit. it also includes a description of the area in which you must work and directions for memory installation. before in- stalling the system board, obtain the memory you plan to install. please refer to the memory chart on pages 14 and 15 for the number and type of sim modules needed for the amount of memory you require. preparing the area before unpacking the system board, make sure the location you have selected is relatively free of dust and static electricity. excessive expo- sure to dust, static electricity, direct sunlight, excessive humidity, ex- treme cold, and water can damage the operational capabilities of your system board. avoid placing the unit on surfaces such as carpeted floors. these areas also attract static electricity which can damage some circuits on your system board. make sure the power source has a properly grounded, three-pronged socket. it is essential that the power connection be properly grounded for correct functioning of your system board. for further protection, we recommend that you use a surge suppressor. this will protect the sys- tem board from damage that may result from a power surge on the electrical line. move items that generate magnetic fields away from your system board since magnetic fields can also damage your system board. once you have selected the ideal location, unpack the G486VPC system board carefully. handling the system board it is quite easy to inadvertently damage your system board even before installing it in your system unit. static electrical discharge can damage computer components without causing any signs of physical damage. you must take extra care in handling the system board to ensure against electrostatic build-up.
10 static electricity precautions 1. to prevent electrostatic build-up, leave the board in its anti-static bag until you are ready to install it. 2. wear an antistatic wrist strap. 3. do all preparation work on a static-free surface with system board components facing up. 4. hold the system board only by its edges. be careful not to touch any of the components, contacts or connections, especially gold contacts, on the board. 5. avoid touching the pins or contacts on all modules and connectors. hold modules and connectors by their ends. warning: electrostatic discharge (esd) can damage your processor, disk drives, add-in boards, and other components. perform the upgrade instruction procedures described at an esd workstation only. if such a station is not available, you can provide some esd protection by wearing an anti- static wrist strap and attaching it to a metal part of the system chassis. if a wrist strap is unavailable, establish and maintain contact with the system chassis throughout any procedures requiring esd protection. installing the system board if you are installing the G486VPC system board, the following outlines the basic installation steps. before installing the system board into your system unit, you should prepare the tools you will need. you will need: ? one medium size, flat-bladed screwdriver ? one medium phillips screwdriver ? one needle-nosed pliers 1. unlock your system unit. turn off the power and disconnect all power cords and cables.
11 2. remove the system unit cover. refer to the manufacturer?s instruc- tions if necessary. 3. remove expansion cards seated in any of the expansion slots and detach all connectors from the old system board. 4. loosen the screws holding the original system board and remove the board from the system. save the screws. 5. remove the G486VPC from its original packing box. be careful to avoid touching all connectors and pins on the board. please refer to the handling instructions on pages 9-10 for proper handling tech- niques. 6. insert the simms into the simm sockets on the G486VPC. the quantity and location of the simms depends on the memory con- figuration and type of modules you intend to use. 7. install the cpu. be sure pin 1 of the cpu is aligned with pin 1 of the socket. 8. set the corresponding jumpers. 9. install the prepared G486VPC system board into the case and re- place the screws. 10. reinstall all cards and connectors and replace the system unit cover. reconnect all power cords and cables.
12 board layout 8-bit isa slot pci slot j10: printer j11: fdc j9: secondary ide j8: primary ide c om a com b jp21 jp11 jp14 jp12 jp13 jp17 eprom battery power connector cn2 cn1 jp22 jp16 jp18 jrn1 jp15 jp9 jp8 jp7 jp6 jp5 jp3 jp4 jp1 j6 j5 j4 j3 j2 j1 j7 umc um8669 via vt82c496 via vt82c505 via vt82c416 jp24 jp23 sm1 sm2 sm3 pin 1 jp25 jp20 jp10 jrn2 pin 1 jp19 jc2 jc1 u17 u7 u2 u8 u1 u9 j12 j13
13 system memory the G486VPC system board can support 1mb to 128mb of memory using 72-pin simms (single in-line memory module). the G486VPC system board uses 256kbx36/x32, 1mbx36/x32, 4mbx36/x32, and 16mbx36/x32 hsim modules installed in sm1-sm3 simm sockets or 512kbx36/x32, 2mbx36/x32, and 8mbx36/x32 in- stalled in sm1 or sm3 simm sockets. you will need 1 to 3 pieces of sim modules, depending on the amount of memory you intend to install. refer to page 12 for the locations of the simm sockets. note: the G486VPC system board supports fast page mode dram only. installing a sim module a sim module simply snaps into a socket on the system board. pin 1 of the sim module must correspond with pin 1 of the socket. 1. position the simm above the socket with the ?notch? in the module aligned with the ?key? on the socket. 2. seat the module at a 45 angle into the bank. make sure it is com- pletely seated. tilt the module upright until it locks in place in the socket. notch key
14 memory configuration the table below summarizes the bank locations and modules needed for the corresponding memory sizes. memory size 1mb 2mb 3mb 4mb 5mb 6mb 8mb 9mb 12mb 16mb 17mb 18mb 20mb 21mb 24mb 32mb 33mb 36mb 48mb 64mb 2mb 3mb 4mb 6mb 18mb 8mb 9mb sm1 1m 1m 1m 4m 4m 4m 4m 4m 4m 16m 16m 16m 16m 16m 16m 16m 16m 16m 16m 64m 2m(d) 2m(d) 2m(d) 2m(d) 2m(d) 8m(d) 8m(d) sm2 ? 1m 1m ? 1m 1m 4m 4m 4m ? 1m 1m 4m 4m 4m 16m 16m 16m 16m ? ? ? ? ? ? ? ? sm3 ? ? 1m ? ? 1m ? 1m 4m ? ? 1m ? 1m 4m ? 1m 4m 16m ? ? 1m 2m(d) 4m 16m ? 1m
15 memory size 12mb 16mb 24mb 32mb 32mb 33mb 34mb 36mb 40mb 48mb 64mb 65mb 68mb 69mb 72mb 80mb 81mb 84mb 128mb 128mb 72mb 96mb sm1 8m(d) 8m(d) 8m(d) 16m(d) 32m(d) 32m(d) 32m(d) 32m(d) 32m(d) 32m(d) 32m(d) 64m 64m 64m 64m 64m 64m 64m 64m 64m 8m(d) 32m(d) sm2 ? ? ? ? ? ? ? ? ? ? ? 1m 4m 4m 4m 16m 16m 16m 64m ? ? ? sm3 4m 8m(d) 16m 16m(d) ? 1m 2m(d) 4m 8m(d) 16m 32m(d) ? ? 1m 4m ? 1m 4m ? 64m 64m 64m (d) - double density
16 cpu installation the G486VPC allows for easy installation of cpus. make sure all jump- ers are set correctly before applying power or you may damage the cpu or system board. please see the jumper settings on the following pages. cache memory the G486VPC system board can be configured to two different cache sizes: 128kb and 256kb. regardless of the amount of cache memory installed, one 32kx8 is needed for tag ram (u7) to store the cacheable addresses. refer to page 12 for the locations of the sram sockets. jumper settings for cache memory cache size 256kb 128kb jumpers jp6-jp8 cache memory selection data sram (u1, u2, u8, & u9) tag sram (u7) 2-3 on 1-2 on 1-2 on 2-3 on 2-3 on 1-2 on 64kx8x4 32kx8x4 32kx8 32kx8 jp6 jp7 jp8 1 2 3 2-3 on 1 2 3 1-2 on
17 jumper settings for cpu jumpers jrn1, jrn2, jp16, jp18, jp20, jp22, and jp23 cpu type jumpers jrn1 and jrn2 1-2, 3-4, 5-6, 7-8, 9-10 off 1-2, 3-4, 5-6, 7-8, 9-10 on 1-2, 3-4, 5-6, 7-8, 9-10 off 1-2, 3-4, 5-6, 7-8, 9-10 on jrn2 jrn1 1-2, 3-4, 5-6, 7-8, 9-10 on 1-2, 3-4, 5-6, 7-8, 9-10 off 1-2, 3-4, 5-6, 7-8, 9-10 on 1-2, 3-4, 5-6, 7-8, 9-10 off pin-out intel pin-out cyrix pin-out cpus intel dx2, dx4, dx4 overdrive, pentium overdrive amd standard, enhanced, 5x86 cyrix 5x86 sgs thomson 5x86 cyrix dx2 sgs thomson dx2 cyrix dx4 sgs thomson dx4 cyrix dx4 sgs thomson dx4 note: please check your cpu dealer or sales representative whether your cyrix dx4 or sgs thomson dx4 cpu is designed in accordance to the intel pin-out or cyrix pin-out. 1 10 1-2, 3-4, 5-6, 7-8, 9-10 on 1 10 1-2, 3-4, 5-6, 7-8, 9-10 off
18 intel dx2, dx4, dx4 overdrive, pentium overdrive amd standard, dx4 sv8b, 5x86-150 cyrix dx2, dx4, 5x86 sgs thomson dx2, dx4, 5x86 amd dx2 sv8b, 5x86-133/166 cpus jumper jp16 jp16 off on on off jumper jp18 intel dx2, dx4, dx4 overdrive, pentium overdrive amd enhanced, dx4 nv8t, 5x86 cyrix dx2, dx4, 5x86 sgs thomson dx2, dx4, 5x86 amd dx2 nv8t cpus jp18 off on on off
19 jumpers jp20 and jp23 jp23 jp20 1-2 on 1-2 on 1-2 on off 2-3 on 1-2 on intel dx2 intel dx4, dx4 overdrive, pentium overdrive amd standard, enhanced, 5x86 cyrix dx2, dx4, 5x86 sgs thomson dx2, dx4, 5x86 cpus 1 2 3 1-2 on 1 2 3 2-3 on 1 2 3 off jumper jp22 jp22 1-2 on 2-3 on intel dx2, dx4 amd standard, enhanced, 5x86 cyrix dx2, dx4, 5x86 sgs thomson dx2, dx4, 5x86 intel dx4 overdrive, pentium overdrive cpus 1 2 3 1-2 on 1 2 3 2-3 on note: amd standard refers to 486dx2 nv8t and 486dx4 nv8t. amd enhanced refers to 486dx2 sv8b and 486dx4 sv8b.
20 cpu voltage jp9 jp10 1-2 on 2-3 on 2-3 on 2-3 on 5v 3.45v 3.6v 4v 1-2 on 1-2 on 3-4 on 5-6 on jumpers jp9, jp10 and jp15 cpu voltage selection jp15 1-2 on 2-3 on 2-3 on 2-3 on 1 2 3 jp9, jp15 1-2 on 1 2 3 jp9, jp15 2-3 on jumpers jp3-jp5 cpu external clock selection jp3 jp4 jp5 2-3 on 1-2 on 2-3 on 1-2 on 2-3 on 1-2 on 2-3 on 2-3 on 1-2 on 25mhz 33mhz 40mhz 1 2 3 1-2 on 1 2 3 2-3 on 1 3 5 4 6 2 jp10 1-2 on 1 3 5 4 6 2 jp10 3-4 on 1 3 5 4 6 2 jp10 5-6 on
21 installing upgrade cpus the G486VPC is equipped with a 237-pin zero insertion force (zif) socket at location u17 of the system board. refer to page 12 for the location of the zif socket. this socket is designed for easy removal of an old cpu and easy insertion of an upgrade cpu. the socket allows you to carefully place the new cpu into its position. if you need to apply excessive force to insert the cpu, you are not installing the cpu correctly. warning: open the socket only if you are actually installing a cpu. the warranty on the original cpu will be voided if the s/n seal is broken. before proceeding with the upgrade, take note of the following. the mi- croprocessor and heat sink may be hot if the system has been running. to avoid the possibility of a burn, power the system off and let the processor and heat sink cool for 10 minutes. the 237-pin zif socket consists of four rows of pin holes on each side. to prevent improper installation, the zif socket has a plug/keying mechanism. several holes in the socket are plugged so that the cpu will go in only one way. if you cannot easily insert the cpu, verify that pin 1 of the cpu is aligned with pin 1 of the socket. warning: be extremely careful to match pin 1 of the cpu with pin 1 of the socket. usually pin 1 of the cpu is marked by a dot or a cut corner. zero insertion force (zif) socket pin 1
22 to install an upgrade cpu, do the following. 1. make sure the handle on the side of the zif socket is up. to raise the handle, push it down, slightly pull it out to the side, then raise it as far as it will go. it may be necessary to initially apply a small amount of sideways force to free the handle from its retaining ?tab.? once clear of the ?tab,? the handle will open relatively easily. the top plate will slide back. do not use screwdrivers or other tools to open the socket, or you may damage the system or socket. lifting the handle 2. once the lever is completely up, remove the old cpu carefully by lifting it straight out of the socket. you are now ready to insert the new cpu. pin 1
23 3. position the cpu above the zif socket. make sure pin 1 of the cpu is aligned with pin 1 of the socket. lower the chip until the pins are inserted properly in their corresponding holes. remember that very little force is needed to install the cpu. if the cpu is not easily inserted, verify whether or not pin 1 of the cpu is aligned with pin 1 of the socket. applying too much pressure can damage the cpu or the socket. positioning the cpu above the zif socket 4. push the handle down until the handle locks into place. the top plate will slide forward. you will feel some resistance as the pres- sure starts to secure the cpu in the socket. this is normal and will not damage the cpu. however, if the handle is not completely closed, damage to the cpu and/or system board may result. clearance requirements your cpu comes with a heat sink mounted on top. to maintain proper airflow once the cpu is installed on the system board, the cpu and heatsink require certain space clearances. the clearance above the cpu?s fan/heat sink must be at least 0.4 inches. the clearance on at least 3 of 4 sides of the cpu must be at least 0.2 inches. the cables (for floppy drive, hard drive, cd-rom, etc.) must be routed clear of the cpu and its airspace. pin 1
24 fan exhaust the cpu must be kept cool by using a fan with heatsink. the tempera- ture of the air entering the fan/heatsink cannot exceed 45c (113f). the ambient or room temperature must be below 37c (99f). in order to provide proper airflow to the cpu, all movable obstructions (power supply cables, cards, floppy disk cables) must be clear of the cpu fan/heatsink component in accordance with the space clearance discussed in the clearance requirements section of this manual. jumper settings for the pci slot jumpers jp13 and jp21 cpu external clock speed for the pci slot set jumpers jp13 and jp21 according to the type of cpu installed on the system board. 1 2 3 3 2 1 jp21: 1-2 on jp13: 1-2 on cpu external clock speed <= 33mhz (default) 1 2 3 3 2 1 jp21: 2-3 on jp13: 2-3 on cpu external clock speed = 40mhz
25 jumper settings for cmos clean jumper jc2 cmos clean select if, for some reason, the cmos becomes corrupted, the system can be reconfigured with the default values stored in the rom bios. to load the default values, switch off your computer and remove the cover. touch the power supply box to discharge any static electric buildup in your body. set jc2 pins 2 and 3 to on for approximately 5 seconds, then return to the default position (pins 1 and 2 to on). put the cover back and power up your system. 1-2 on: normal (default) jumper settings for eprom type jumper jp19 eprom type select jumper jp19 should be set to match the type of eprom installed on the system board. refer to page 12 for the location of the eprom installed on your system board. 1 2 3 1 2 3 1-2 on: 12v flash eprom 28f010 2-3 on: 5v flash eprom 29f010, flash eprom 29ee010 or eprom 27c010 3 2 1 2-3 on: cmos clean 3 2 1
26 factory testing jumpers the following jumpers are for factory testing only and should always be set to their default configurations. reconfiguring these jumpers will cause problems with your system board. jp1: off jp17: 1-2 on jp11: 1-2 on jp24: off jp12: 1-2 on jp25: 1-2 on jp14: 1-2 on jumper settings for lithium battery jumper jc1 lithium battery the G486VPC system board comes with a lithium battery. the default setting of jc1 is 1-2 on for battery conservation during shipment of the board. before installing the system board onto your system unit, set jc1 to 2-3 on to use the lithium battery. 1-2 on: default 3 2 1 2-3 on: lithium battery 3 2 1
27 built-in ports the G486VPC system board is equipped with two serial ports, one par- allel printer port, one fdd connector, two ide hard disk shrouded head- ers and one ps/2 mouse connector. refer to page 12 for the locations of the built-in connectors and pin 1 of those connectors. serial ports the built-in serial ports are rs-232c asynchronous communication ports with 16c550a-compatible uarts that can be used with modems, serial printers, remote display terminals, and other serial devices. they use the following system i/o addresses: port configuration com a com b i/o address 3f8h 2f8h connecting the serial ports two db-9p serial port cables are provided with the system board. at- tach one serial port cable to connector j12 for the com a primary se- rial port and the other serial port cable to connector j13 for the com b secondary serial port. make sure the colored stripes on the ribbon cables are aligned with pin 1 of connectors j12 and j13. use a small nutdriver to mount the cable into a db-9 cutout in the system chassis. ps/2 mouse port the ps/2 mouse port is a 6-pin connector on the system board. attach the 6-pin mouse port cable, which came with the G486VPC, to connec- tor cn1. make sure the red wire on the ps/2 mouse connector is aligned with pin 1 of connector cn1.
28 parallel port the G486VPC system board has a standard connector for interfacing your pc to a parallel printer. the parallel port on your system board can be set to any of the following system i/o addresses: i/o address: 3bc-3be hex 378-37a hex (default) 278-27a hex connecting the parallel printer port attach the db-25s printer port cable, which came with the system board, to connector j10 on the G486VPC system board. make sure the colored stripe on the ribbon cable aligns with pin 1 of connector j10. use a small nutdriver to mount the cable into a db-25 cutout in the system chassis. floppy disk drive controller the G486VPC system board has a built-in floppy disk controller that supports two standard floppy disk drives. you can install any 360kb, 720kb, 1.2mb, 1.44mb, or 2.88mb floppy disk drives. connecting the floppy disk cable 1. install the 34-pin header connector into the floppy disk connector (j11) on the system board. the colored edge of the ribbon should be aligned with pin 1 of connector j11. 2. install the other 34-pin header connector(s) into the disk drive(s). align the colored edge of the daisy chained ribbon cable with pin 1 of the drive edge connector(s). the end-most connector should be attached to the drive you want to designate as drive a. ide hard disk interface the G486VPC system board is equipped with two vlb ide shrouded
29 headers that will interface four enhanced ide (integrated drive elec- tronics) hard disk drives. note: only ide hard drives or atapi cd-roms can be connected to the ide interface. connecting the ide hard disk interface to prevent improper ide cable installation, each pci ide shrouded header has a keying mechanism. the 40-pin connector on the ide cable can be placed into the header only if pin 1 of the connector is aligned with pin 1 of the header. header note: the ide cable with a standard 40-pin connector (without the keying mechanism) can be installed in the pci ide shrouded header. be ex- tremely careful to match the colored edge of the ribbon with pin 1 of the header. keying mechanism connecting the hard disk cable 1. if you are connecting two hard drives, install the 40-pin connector of the ide cable into the primary ide shrouded header (connector j8). if you are adding a third or fourth ide device, install the 40-pin connector of the other ide cable into the secondary ide shrouded header (connector j9).
30 2. install the other 40-pin header connector(s) into the device with the colored edge of the ribbon cable aligned with pin 1 of the drive edge connector(s). note: refer to your disk drive user?s manual for information about selecting proper drive switch settings. adding a second ide hard drive when using two ide drives, one must be set as the master and the other as the slave. follow the instructions provided by the drive manu- facturer for setting the jumpers and/or switches on the drives. no changes are needed on the G486VPC system board when adding a second hard drive. we recommend that the ide hard drives be from the same manufac- turer. in a few cases, drives from two different manufacturers will not function properly when used together. the problem lies in the hard drives, not the G486VPC system board. preparing an ide drive for use ide disk drives are already low-level formatted, with any bad-track er- rors entered, when shipped by the drive manufacturer. do not attempt to do a low-level format or you may cause serious damage to the drive. to use an ide drive, you need to enter the drive type (this information is provided by the drive manufacturer) into the system?s cmos setup table. then run fdisk and format provided with dos. warning: do not run fdisk and format programs on a drive that has already been formatted or you will lose all programs and data stored on the drive.
31 installing expansion cards the G486VPC system board is equipped with 6 dedicated 16-bit isa slots and 1 shared pci/8-bit isa slot. you can only install one card in one or the other of the shared slots at a time; you cannot install devices in both slots at the same time. refer to page 12 for the locations of the expansion slots. note: the bios needs to be configured for the pci add-in card installed in the pci slot. refer to the ?pci configuration setup? presented in the ?software installation? section of the manual.
32 chapter 3 software installation after you power up your system, the bios message appears on your screen and the memory count begins. after the memory test, the following message will appear on the screen: press del to enter setup if the message disappears before you respond, restart your system or press the ?reset? button on the front of your computer. you may also restart the system by pressing the and keys simulta- neously. if you do not press these keys at the correct time and the system does not boot, the following error message will appear: press del to enter setup if you have set a password and selected ?system? in the security op- tion of the bios features setup menu, you will be prompted for the password every time the system is rebooted or any time you try to enter setup. type in the correct password and press . if you selected ?setup? in the security option, you will be prompted for the password only when you try to enter setup. refer to the ?bios features setup? section for more information. award bios cmos setup utility press simultaneously or to enter the setup utility. a screen similar to the one on the next page will appear.
33 use the arrow keys to highlight the option you want and press . the following describes each of these options. standard cmos setup use the arrow keys to highlight ?standard cmos setup? and press . a screen similar to the one below will appear. date and time this selection sets the time and date for the system. press for the calendar. hard drive type this allows you to enter the appropriate specifications for the type of hard disk drive(s) installed in your system. under the ?type? category,
34 you can select auto, user, one of 46 predefined drive specifications or none. auto: this option indicates that the parameters for your hard disk drive(s) will be automatically detected and displayed when you boot your system. by default, the lba mode is selected for a hard disk drive larger than 528 megabytes. if you decide not to accept the lba mode, you can either specify your selection in the ?ide hdd auto detection? menu, or use the user option described below. user: this type is user definable and allows you to enter the specifica- tions yourself directly from the keyboard. six categories of information are required: size, cylinders, heads, precomp, landzone, sectors and mode. this information should be provided by your hard disk vendor or system manufacturer. however, we recommend you use the ?ide hdd auto detection? which provides a more efficient way to setup your hard drive. 46 predefined drive specifications: the tables on pages 60 to 62 give complete listings of the available drive types. any given hard drive must be set to one specific drive type number. please refer to your hard disk documentation for the appropriate type number. none: if a hard drive is not installed, select and press . drive a and drive b these options are used to select the type of floppy disk drives installed in your system. if neither drive is present, select ?none?. make sure you choose the correct drive type; otherwise, your system might format the device improperly. video this is used to select the type of video adapter installed in your system. halt on this category controls whether the system will halt in case an error is detected during power up.
35 no errors: the system boot will not stop for any detected errors. all errors: the system will stop whenever the bios detects a non-fatal error. all, but keyboard: the system will stop for any error except a keyboard error. all, but diskette: the system will stop for any error except a disk error. all, but disk/key: the system will stop for any error except a keyboard or disk error. memory the lower right hand corner shows the base memory size, extended memory size, and the other memory size of your system. you cannot alter these items; your computer automatically detects and displays them. the other memory size refers to the memory located in the 640k to 1024k address space. this is the memory used for different applica- tions. dos uses this area to load device drivers to free base memory for application programs. when you are through making changes in the standard cmos setup, press to return to the main menu. bios features setup use the arrow keys to highlight ?bios features setup? and press , a screen similar to the one on the next page will appear.
36 the virus warning option may be set to ?enabled? or ?disabled?. if en- abled, the bios issues a warning when any program or virus sends a disk format command or attempts to write to the boot sector of the hard disk drive. note: if you are installing or running certain operating systems such as win- dows 95, please disable the virus warning or the operating system may not install nor work. if you choose ?system? in the security option, you will be prompted for a password every time you cold boot your system or access setup. if you choose ?setup?, you will be prompted for a password only when trying to access setup. use the arrow keys to move the highlight bar to the option you wish to change or modify. use the , , <+> or <-> keys to make the corresponding changes. press after making the changes to return to the main menu. chipset features setup the G486VPC uses the via chipset. the chipset features setup al- lows you to modify some functions to optimize system performance. if you press , a screen similar to the one on the next page will appear.
37 use the arrow keys to move the highlight bar to the option you wish to change or modify. use the , , <+> or <-> keys to make the corresponding changes. if the changes you made are incorrect or you change your mind, press or to return to the default settings. press after mak- ing the changes to return to the main menu. power management setup use the arrow keys to highlight ?power management setup? and press . a screen similar to the one below will appear. choosing ?enabled? in the power management option will allow you to set sleep timer, sleep mode, hdd power management and vga activ- ity wakeup. choose ?disabled? if you do not want your system to enter the power saving mode.
38 pci configuration setup use the arrow keys to highlight ?pci configuration setup? and press ; a screen similar to the one below will appear. the G486VPC system board supports one pci slot. this slot may be assigned an int value if the card installed in the slot requires an inter- rupt. the int may then be assigned an irq value. load bios defaults the ?load bios defaults? option loads the troubleshooting default val- ues permanently stored in the rom chips. these settings are not opti- mal and turn off all high performance features. you should use these values only if you have hardware problems. highlight this option on the main menu and press . the message below will appear. load bios defaults (y/n)? n if you want to proceed, press and the default settings will be loaded. load setup defaults the ?load setup defaults? option loads optimized settings from the bios rom. use the setup default values as standard values for your system.
39 highlight this option on the main menu and press . the mes- sage below will appear. load setup defaults (y/n)? n type and press to load the setup default values. supervisor password if you want to protect your system and setup from unauthorized entry, set a supervisor?s password with the ?system? option selected in the bios features setup. if you want to protect access to setup only, but not your system, set a supervisor?s password with the ?setup? option selected in the bios fea- tures setup. you will not be prompted for a password when you cold boot the system. use the arrow keys to highlight the ?supervisor password? option and press . the message below will appear. enter password: type in the password. you are limited to eight characters. when done, the message below will appear: confirm password: you are asked to verify the password. type in exactly the same pass- word. if you type in a wrong password, you will be prompted to enter the correct password again. to delete or disable the password function, highlight ?supervisor pass- word? and press , instead of typing in a new password. press the key to return to the main menu.
40 user password if you want another user to have access only to your system but not to setup, set a user?s password with the ?system? option selected in the bios features setup. if you want a user to enter a password when trying to access setup, set a user?s password with the ?setup? option selected in the bios fea- tures setup. using user?s password to enter setup allows a user to access only the ?user password? option that appears on the main screen. access to all other options is denied. to set, confirm, verify, disable or delete a user?s password, follow the procedures described in the section ?supervisor password?. if you for- get your password, refer to the procedure described in the same sec- tion. ide hdd auto detection this option detects the hard disk parameters for the hard disk drives installed in your system. highlight this option and press . a screen similar to the one below will appear.
41 enter your choice, and press to accept the parameters or press to abort. the parameters of the hard disk will be displayed in the standard cmos setup. hard drive mode the G486VPC supports three hdd modes: normal, lba and large. if your hard disk drive does not support lba mode, the ?lba? option will not be displayed. if your hdd has 1024 or fewer cylinders, the ?large? option will not be displayed. normal mode the normal mode is the generic access mode in which neither the bios nor the ide controller will make any transformations during hard- drive access. the maximum number of cylinders, heads and sectors for normal mode are 1024, 16 and 63, respectively. no. cylinders (1024) x no. heads ( 16) x no. sectors ( 63) x bytes per sector ( 512) 528 megabytes if you set your hdd to normal mode, the maximum accessible hdd space will be 528 megabytes even though the physical size of the hdd may be greater than that. lba (logical block addressing) mode the lba mode is a hdd accessing method to overcome the 528 mega- bytes limitation. the number of cylinders, heads and sectors shown on the screen may not be the actual number for the hdd. during the hdd accessing, the ide controller will transform the logical address described by the sector, head and cylinder number into its own physical address inside the hdd.
42 the maximum hdd size supported by the lba mode is 8.4 gigabytes. it is obtained by the following formula. no. cylinders (1024) x no. heads ( 225) x no. sectors ( 63) x bytes per sector ( 512) 8.4 gigabytes large mode the large mode is the extended hdd access mode supported by the G486VPC system board. some ide hdds have more than 1024 cylin- ders without lba support (in some cases, you may not want the lba mode). this system board provides another alternative to support these kinds of hdds. the bios tells the operating system that the number of cylinders is half of the actual number and that the number of heads is double the actual number. during disk access, the reverse conversion is done by the int13h routine. example of large mode: cyls. heads sectors mode 1120 16 59 normal 560 32 59 large maximum hdd size: no. cylinders (1024) x no. heads ( 32) x no. sectors ( 63) x bytes per sector ( 512) 1 gigabyte
43 note: to support lba or large mode, address translation software is included in the award bios hdd sevice routine (int13h). if you are running an operating system that bypasses the bios int13 service routine, lba and large mode may fail. save & exit setup when all the changes have been made, highlight ?save & exit setup? and press . the message below will appear: save to cmos and exit (y/n)? n type ?y? and press . the following message will appear: reboot system (y/n)? n type ?y? and press . the modifications you have made will be written into the cmos memory, and the system will reboot. you will once again see the initial diagnostics on the screen. if you wish to make additional changes to the setup, press simul- taneously or after memory testing is done. exit without saving when you do not want to save the changes you have made, highlight the ?exit without saving? option and press . the message be- low will appear: quit without saving (y/n)? n type ?y? and press . the system will reboot and you will once again see the initial diagnostics on the screen. if you wish to make any changes to the setup, press simultaneously or after memory testing is done.
44 system error report when the bios encounters an error that requires the user to correct something, either a beep code will sound or a message will be dis- played in a box in the middle of the screen and the message press f1 to continue, ctrl-alt-esc or del to enter setup, will be shown in the information box at the bottom. enter setup to correct the error. post beep there is one beep code in the bios. this code indicates that a video error has occurred and the bios cannot initialize the video screen to display any additional information. this beep code consists of a single long beep followed by two short beeps. if you get this error, contact your system vendor. error messages one or more of the following messages may be displayed if the bios detects an error during the post. disk boot failure, insert system disk and press enter no boot device was found. insert a system disk into drive a and press . if the system normally boots from the hard drive, make sure the controller is inserted correctly and all cables are properly attached. also be sure the disk is formatted as a boot device. reboot the system. diskette drives or types mismatch error - run setup the type of diskette drive installed in the system is different from the cmos definition. run setup to reconfigure the drive type correctly. display switch is set incorrectly the display switch on the system board can be set to either mono- chrome or color. this error indicates the switch is set to a different setting than indicated in setup. determine which setting is correct and either turn off the system and change the jumper or enter setup and change the video selection.
45 display type has changed since last boot since last powering off the system, the display adapter has been changed. you must configure the system for the new display type. error encountered initializing hard drive the hard drive cannot be initialized. be sure the adapter is installed correctly and all cables are correctly and firmly attached. also, be sure the correct hard drive type is selected in setup. error initializing hard disk controller the system cannot initialize the controller. make sure the card is cor- rectly and firmly installed in the bus. be sure the correct hard drive type is selected in setup. also, check to see if any jumper needs to be set correctly on the hard drive. floppy disk cntrlr error or no cntrlr present the system cannot find or initialize the floppy drive controller. make sure the controller is installed correctly and firmly. if no floppy drive is installed, be sure the diskette drive selection in setup is set to none. keyboard error or no keyboard present cannot initialize the keyboard. make sure the keyboard is attached cor- rectly and no keys are being pressed during the boot. if you are purposely configuring the system without a keyboard, set the error halt condition in setup to halt on all, but keyboard. this will cause the bios to ignore the missing keyboard and continue the boot. memory address error at... indicates a memory address error at a specific location. you can use this location along with the memory map for your system to find and replace the bad memory chips. memory size has changed since last boot memory has been added or removed since the last boot. enter setup and enter the new memory size in the memory fields. memory verify error at... indicates an error verifying a value already written to memory. use the location along with your system?s memory map to locate the bad chip.
46 offending address not found this message is used in conjunction with the i/o channel check and ram parity error messages when the segment that has caused the problem cannot be isolated. offending segment this message is used in conjunction with the i/o channel check and ram parity error messages when the segment that has caused the problem has been isolated. press a key to reboot this will be displayed at the bottom screen when an error occurs that requires a reboot. press any key and the system will reboot. press f1 to disable nmi, f2 to reboot when bios detects a non-maskable interrupt condition during boot, this will allow nmi to be disabled and continue to boot. you can also reboot the system with the nmi enabled. system halted, (ctrl-alt-del) to reboot... indicates the present boot attempt has been aborted and the system must be rebooted. press and hold down the ctrl, alt and del keys simultaneously.
47 chapter 4 troubleshooting checklist if you experience difficulty with the G486VPC system board, please re- fer to the checklist below. if you still cannot identify the problem, please contact your dealer. 1. check the jumper settings to ensure that the jumpers are properly set. if in doubt, refer to the ?hardware installation? section. 2. verify that all simms are seated securely into the simm sockets. 3. make sure the simms are in the correct locations. 4. check that all populated memory banks are filled with correctly sized simms. 5. if your board fails to function, place the board on a flat surface and seat all socketed components (gently press each component into the socket). 6. if you made changes to the bios settings, re-enter setup and load the bios defaults.
48 appendix a types of modules the G486VPC system board supports 1mb to 64mb of memory using 72-pin simms. the following modules have been tested with this board. most untested brands will work but a few may fail to do so. simm 256kbx36 512kbx36 1mbx36 2mbx36 4mbx36 brand oki oki fujitsu toshiba oki mitsubishi fujitsu mitsubishi oki chip number m514256b-70j m514256b-70j 814400a-70 tc514400asjl-70 m514400a-70 m5m44400bj-7s 814100a-70 m5m417400bj-7 m514100b-70s
49 memory address map address name function 0000000 to 640kb system system board memory 009ffff board ram 00a0000 to 128kb video reserved for graphics 00bffff display memory display memory 00c0000 to 160kb i/o reserved for rom on 00e7fff expansion rom i/o adapter card 00e8000 to 96kb rom on system board bios 00fffff the system board 0100000 to maximum system board memory 3ffffff memory 64mb appendix b memory and i/o maps
50 note: the i/o address hex 000 to 0ff are reserved for the system board i/o. hex 100 to 3ff are available on the i/o channels. i/o address map i/o address function 000-01f dma controller 1, 8237a-5 020-03f interrupt controller 1, 8259a, master 040-05f timer, 8254-2 060-06f 8742 (keyboard controller) 070-07f real-time clock, nmi (non-maskable interrupt) mask 080-09f dma page memory, 74ls612 0a0-08f interrupt controller 2, 8259a 0c0-0df dma controller 2, 8237a-5 0e8 shadow ram and cache control bit 0f0 clear numeric processor extension busy 0f1 reset numeric processor extension 0f8-0ff numeric processor extension 1f0-1f8 fixed disk 200-207 game i/o 278-27f parallel printer port 2 2f8-2ff serial port 2 300-31f prototype card 360-36f reserved 378-37f parallel printer port 1 380-38f sdlc, bisynchronous 2 3a0-3af bisynchronous 1 3b0-3bf monochrome display and printer adapter 3c0-3cf reserved 3d0-3df color/graphics monitor adapter 3f0-3f7 diskette controller 3f8-3ff serial port 1
51 appendix c pci i/o pin assignments - 01 - - 02 - - 03 - - 04 - - 05 - - 06 - - 07 - - 08 - - 09 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 - - 16 - - 17 - - 18 - - 19 - - 20 - - 21 - - 22 - - 23 - - 24 - - 25 - - 26 - - 27 - - 28 - - 29 - - 30 - - 31 - - 32 - - 33 - - 34 - - 35 - - 36 - - 37 - - 38 - - 39 - - 40 - - 41 - - 42 - - 43 - - 44 - - 45 - - 46 - - 47 - - 48 - - 49 - - 52 - - 53 - - 54 - - 55 - - 56 - - 57 - - 58 - - 59 - - 60 - - 61 - - 62 - a trst# +12v tms tdi +5v inta# intc# +5v reserved +5v (i/o) reserved ground ground reserved rst# +5v (i/o) gnt# ground reserved ad[30] n. c. ad[28] ad[26] ground ad[24] idsel n. c. ad[22] ad[20] ground ad[18] ad[16] n. c. frame# ground trdy# ground stop# n. c. sdone sbo# ground par ad[15] n. c. ad[13] ad[11] ground ad[09] c/be[0]# n. c. ad[06] ad[04] ground ad[02] ad[00] +5v (i/o) req64# +5v +5v b -12v tck ground tdo +5v +5v intb# intd# prsnt1# reserved prsnt2# ground ground reserved ground clk ground req# +5v (i/o) ad[31] ad[29] ground ad[27] ad[25] n. c. c/be[3]# ad[23] ground ad[21] ad[19] n. c. ad[17] c/be[2]# ground irdy# n. c. devsel# ground lock# perr# n. c. serr# n. c. c/be[1]# ad[14] ground ad[12] ad[10] ground ad[08] ad[07] n. c. ad[05] ad[03] ground ad[01] +5v (i/o) ack64# +5v +5v component side solder side
52 appendix d isa i/o pin assignments - 01 - - 02 - - 03 - - 04 - - 05 - - 06 - - 07 - - 08 - - 09 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 - - 16 - - 17 - - 18 - - 19 - - 20 - - 21 - - 22 - - 23 - - 24 - - 25 - - 26 - - 27 - - 28 - - 29 - - 30 - - 31 - d -mem cs16 -i/o cs16 irq10 irq11 irq12 irq13 irq14 -dack0 drq0 -dack5 drq5 -dack6 drq6 -dack7 drq7 +5v dc -master gnd - 01 - - 02 - - 03 - - 04 - - 05 - - 06 - - 07 - - 08 - - 09 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 - - 16 - - 17 - - 18 - c sbhe la23 la22 la21 la20 la19 la18 la17 -memr -memw sd08 sd09 sd10 sd11 sd12 sd13 sd14 sd15 b gnd reset drv +5v dc irq9 -5v dc drq2 -12v dc ows +12v dc gnd -sememw -sememr -iow -ior -dack3 -drq3 -dack1 drq1 -refresh clk irq7 irq6 irq5 irq4 irq3 -dack2 t/c bale +5v dc osc gnd a -i/o chck sd7 sd6 sd5 sd4 sd3 sd2 sd1 sd0 -i/o chrdy aen sa19 sa18 sa17 sa16 sa15 sa14 sa13 sa12 sa11 sa10 sa9 sa8 sa7 sa6 sa5 sa4 sa3 sa2 sa1 sa0
53 appendix e system overview dma controller 1 ch0-reserved for user ch1-reserved for user ch2-diskette ch3-reserved for user dma controller 2 ch4-cascade for ctrl 1 ch5-reserved for user ch6-reserved for user ch7-reserved for user note: dma controller 1 supports 8-bit data transfer. dma controller 2 supports 16-bit data transfer. address generation for dma channels 3 to 0 source dma page memory dma controller 1 address a23 ? a16 a15 ? a0 address generation for dma channels 7 to 5 source dma page memory dma controller 2 address a23 ? a17 a16 ? a1 page memory address i/o port address 0081h 0082h 0083h 0087h 0089h 008ah 008bh page memory dma channel 2 dma channel 3 dma channel 1 dma channel 0 dma channel 6 dma channel 7 dma channel 5
54 system interrupts interrupt controller 1 irq0-timer output (out 0) irq1-keyboard (output buffer full) irq2-interrupt from intr2 irq3-serial port 2 irq4-serial port 1 irq5-parallel port 2 or 3 * irq6-diskette controller irq7-parallel port 1 or 2 * irq8-realtime clock int interrupt controller 2 irq9-software redirected to int 0ah (irq2) irq10-reserved irq11-reserved irq12-ps/2 mouse irq13-coprocessor irq14-primary fixed disk controller (1f0) irq15-secondary fixed disk controller (170) * the one on-board parallel port can be configured to either parallel port 1, 2 or 3. parallel port 1 uses i/o address 3bch, parallel port 2 uses i/o address 378h, and parallel port 3 uses i/o address 278h. note: the 16 levels of system interrupts have the following priority: irq0> irq1> irq8> irq9> irq10> irq11> irq12> irq13> irq14> irq15> irq3> irq4> irq5> irq6> irq7. system timers channel 0 system timer (irq0) channel 1 refresh request generator (15 m s rate generator period signal) channel 2 tone generation for speaker real-time clock address 00 01 02 03 04 05 06 function seconds second alarm minutes minute alarm hours hour alarm day of week address 07 08 09 0a 0b 0c 0d function date of month month year register a register b register c register d
55 appendix f connector pin assignments connector j1 turbo led connector pin 1 2 function signal led power connector j2 green led connector pin 1 2 function signal led power connector j3 speaker connector pin 1 2 3 4 function signal reserved ground +5v connector j4 reset switch connector pin 1 2 function ground reset
56 connector j5 keylock connector pin 1 2 3 4 5 function led signal reserved ground keylock signal ground connector j6 hd led connector pin 1 2 function signal led power connector j7 turbo switch connector pin 1 2 function turbo gnd connectors j8 and j9 primary and secondary ide hard disk drive connectors pin 1 2 3 4 5 6 7 8 9 10 11 12 function -reset ground d7 d8 d6 d9 d5 d10 d4 d11 d3 d12 pin 13 14 15 16 17 18 19 20 21 22 23 24 function d2 d13 d1 d14 d0 d15 ground reserved reserved ground -iow ground
57 pin 25 26 27 28 29 30 31 32 function -ior ground reserved bale reserved ground irq iocs16 pin 33 34 35 36 37 38 39 40 function sa1 reserved sa0 sa2 hcs0 hcs1 led ground pin 1 2 3 4 5 6 7 8 9 10 11 12 13 function -strobe data 0 data 1 data 2 data 3 data 4 data 5 data 6 data 7 -ack busy paper empty select pin 14 15 16 17 18 19 20 21 22 23 24 25 function -autofd -error -init -slctin ground ground ground ground ground ground ground ground connector j10 parallel printer port connector j11 floppy disk drive connector pin 1 2 3 4 5 6 7 8 9 10 function ground densel ground reserved ground drate0 ground index ground mtr0 pin 11 12 13 14 15 16 17 18 19 20 function ground dr1 ground dr0 ground mtr1 drate1 dir ground step
58 pin 21 22 23 24 25 26 27 function ground write data ground write gate ground track 0 msen pin 28 29 30 31 32 33 34 function wr protect ground read data ground head select ground disk change connector j12 and j13 com a and com b serial ports pin 1 2 3 4 5 6 7 8 9 dcd (data carrier detect) rx (receive data) tx (transmit data) dtr (data terminal ready) ground (signal ground) dsr (data set ready) rts (request to send) cts (clear to send) ri (ring indicator) function connector cn1 ps/2 mouse connector pin 1 2 3 4 5 6 function mouse data reserved ground +5v mouse clock reserved
59 connector pl1 power connector pin function 1 2 3 4 5 6 7 8 9 10 11 12 power good +5v +12v -12v ground ground ground ground -5v +5v +5v +5v connector cn2 at keyboard connector function pin 1 2 3 4 5 keyboard clock keyboard data reserved ground +5v
60 10 20 30 62 46 20 30 30 112 20 35 49 20 42 20 40 56 59 30 appendix g award bios hard disk table type 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 teac sd510, mmi 112, 5412 seagate st225, st4026 seagate st125, tandon tm262 tandon tm 703 disctron 526, mmi m125 microscience hh725, syquest 3250, 3425 land zone 305 615 615 940 940 615 511 733 901 820 855 855 319 733 663 977 977 1023 732 size (mb) write precomp 128 300 300 512 512 none 256 none none none none none 128 none 0 300 none 512 300 sectors 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 heads 4 4 6 8 6 4 8 5 15 3 5 7 8 7 4 5 7 7 5 cylinders 306 615 615 940 940 615 462 733 900 820 855 855 306 733 612 977 977 1024 733 (reserved) example model
61 type write precomp sectors 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 heads 7 5 4 5 9 7 11 15 8 11 11 9 10 12 13 14 2 16 15 6 5 cylinders size (mb) 42 30 10 40 76 71 111 152 68 93 83 69 85 102 110 119 17 136 114 40 42 example model 732 733 336 976 1023 1223 1223 1223 1023 1023 1023 926 1023 1023 1023 1023 1023 1023 1023 820 1023 300 300 0 none none none none none none none none none none none none none none none none none none 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 seagate st4038 seagate st4051 seagate st4096 maxtor 2085 maxtor 2140, priam s14 maxtor 2190, priam s19 maxtor 1085, micropolis 1325 maxtor 1105 1120, 4780 maxtor 1170 cdc 9415 maxtor 1140, 4380 seagate st251 seagate 4053 miniscribe 3053/ 6053 733 306 977 1024 1224 1224 1224 1024 1024 918 925 1024 1024 1024 1024 1024 1024 1024 918 820 1024 land zone
62 type cylinders 42 43 44 45 46 47 1024 809 809 776 684 (user defined) heads 5 6 6 8 16 sectors 26 17 26 33 38 65 40 61 100 203 size (mb) write precomp none none none none none land zone 1023 852 852 775 685 example model miniscribe 3053/ 6053 rll miniscribe 3650 miniscribe 3675 rll conner cp3104 conner cp3204

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