Appearance: Used, weatheredFunctionality: NotTestedDescription:============As pictured, a WesternDigital 30MB XT-IDE Hard Drive Logic Board for model WD93038-X. This is aspecial XT-type IDE drive, not the same as regular IDE or AT-IDE. Used by someTandy, Commodore Amiga A2091 A590, and other systems. Unable to test – soldas-is. See below for full specs.Warranty andReturns:=====================This product isbeing sold AS-IS without any warranty. Returns are not accepted. To ensure thatthis is the right product for your needs, we’re happy to answer any questions. Shipping:=========- Local pickup isalso available at no cost.- Most orders placedbefore 9am will ship the same day.Stock#:15372W D 9 3 0 3 8X WESTERN DIGITALNO MOREPRODUCEDNative| Translation------+-----+-----+-----Form 3.5"/HH Cylinders 782|615| |Capacityform/unform 30/ MBHeads 3| 6||Seek time / track70.0/ ms Sector/track 27|| |Controller IDE / XT Precompensation 784Cache/Buffer KB Landing Zone 781Data transferrate 0.938 MB/S int Bytes/Sector 512 MB/S extRecordingmethod RLL 2/7 operating | non-operating -------------+--------------Supply voltage 5/12 V Temperature *C 4 50| -40 60Power: sleep W Humidity %8 80 | 5 95 standby WAltitude km-0.458 3.040| -0.458 12.192 idle W Shock g10 | 40 seek W RotationRPM 3567 read/write WAcoustic dBA 40 spin-up WECC Bit 56 MTBF h40000 Warranty MonthLift/Lock/Park NO Certificates FCC ********************************************************************** L AY O U T**********************************************************************WESTERN WD93028/-38/-48-X/95028/-38-48-X INSTALL. GUIDE 79-000-352 +---------------------------------------------------------+ ||XX I ||XX N ||XX T | |XX E ||XX R ||*X F J2 ||XX A ||XX C ||XX E ||XX ||XX1 ||6-5 J8 ||| | ++LED|2-1 ++|XX J1 ||XX Power+---------------------------------------------------------+ J2 J8 J1 +39------------------------------------1++5-3-1++-------+ |o o o o o o o o o o o o o o o o o o o o||oo o||O O O O| |o o o o o o o o o o o o o o o o o o o||o o o||1 2 3 4|--+40------------------------------------2++6-4-2+++-+-+-++----| | | +5V (Pin 20 keyed) | | +- GND| +--- GND+----- +12V********************************************************************** J UM P ER S**********************************************************************WESTERN WD93028/38/48-X/WD95028/38/48-X INSTALLATIONGUIDE 79-000-35Jumper Setting==============Jumper Option-------------The following option can be selected on the6-pin header J8. Pins 1,3, and 5 are connected to the port pins on the8052 microcomputer ICwhile pins 2, 4, and 6 are tied to ground.Disable Translation-------------------You drive may be configured for thetranslation mode or the non-translation mode. The translation mode allowsyou to your WesternDigital drive with an older S#system BIOSand/or operating systemswhich only support MFM drives with 17 sectorsper track. The non-translation mode accommodates an RLL drivewith 27 sectors per track.When pins 1 and 2 are shorted together, thetranslate option isdisabled. If pin 1 is open, the translateoption is enabled, and thedrive can be used with any BIOS that has adrive table listing lessthan total sectors than your Western Digitaldrive (less than 42,228sectors for the two-head drive assembly; and84,456 for the four-headdrive assembly). For example, a WesternDigital drive in translationmode may replace a drive which has 615cylinders, four heads and 17sectors.Dual Drive Operation--------------------If you are installing two physical drives inyour XT system, thefirst drive must be selected at port address320H. Its BIOS residesat address C800H. Select the second drive atport address 324H. ItsBIOS resides at CA00H. Both drives musttherefore have seperatecables connectinmg them to the motherboard.You will require WesternDigital's XT140 adapter card which has two40-pin connectors. Plugdrive 0 into J1 connector and Drive 1 into J2connector on theadapter card.********************************************************************** I NS T AL L**********************************************************************WESTERN WD93028/38/48-X/WD95028/38/48-X INSTALL. GUIDE 79-000-352Notes on installation=====================System Requirements-------------------You can use your drive in an IMB PC/XT orcompatible system that hasthese operating systems: MS-DOS version 2.0and higher or NovellNetWare. Contact your Western Digital dealerif you need informationsabout other operating systems.Gather Supplies---------------If your computer's motherboard has a 40-pinconnector for installa-tion of a hard disk drive, you will need thefollowing items: +----------+-------------+------------+ |Capacity| 3.5 Inch | 5.25 Inch| || Form Factor | Frame | || | | |20 MBytes | WD93028-X| WD95028-X | |30 MBytes | WD93038-X| WD95038-X | |40 MBytes | WD93048-W| WD95048-X | +----------+-------------+------------+- Your Western Digital drive:- One 40-pin interface cable (Maximum lengthof 18 inches)- Optional mounting frame, bezel and LED- IDE SUPERBIOS program for low-levelformattingIf there is not a 40-pin connector on themotherboard or you intendto place two hard disk drives in your system,your drive willadditionally require:- Western Digital's XT140R adapter card withIDE SUPERBIOS or XT150R adapter card with IDE SUPERBIOS and powerconnector.- Additional 40-pin interface cable, ifinstalling a second drive.Mount the disk drive to the host using four6-32 screws.After securely mounting the drive, verify thatnothing interfereswith the free movement of the drive's shockmounts.WARNINGThe only electrical ground contact should befrom universal mountingbracket to the frame on the host system. Donot ground to the harddrive assembly (HDA) casting. Screws which aretoo long will cause aground loop to the HDA and defeat the shockmounting or possiblydamage board components. The screw should engageno more than sixthreads (3/16 inch).Connectors----------Interface Connector: 2 x 20 pin right angle.1" Berg stick (pin 20 keyed)Cable type: 40-conductor mass terminated flatribbonCable length: 18 inches maximum********************************************************************** F EA T UR E S**********************************************************************WESTERN WD93028/38/48-X/WD95028/38/48-X INSTALL. GUIDE 79-000-352Product Description-------------------Western Digital's WD93028-X, WD93038-X, andWD93048-X are intelligentdrive products for the IBM PC/XT andcompatibles. Their architecturesintegrate an ST-412/ST-506 compatible hard driveassembly with acontroller on a single printed circuit boardthat is mounted on thedisk drive's chassis. The integration of diskdrive and controllerincreases reliability and performance byeliminating redundantcircuitry. Models WD93028-X, WD93038-X, andWD93048-X offer 20, 30,and 40 MB of storage, respectively, in a 3.5inch form factor. Thesedrives are also available in 5.25-inch frame(WD95028-X, WD95038-X,and WD95048-X).Formatting Your Drive---------------------Use the IDE SUPERBIOS program to perform alow-level format of yourdrive. The WDXT140R or WDXT150R adapter cardcontains the IDE SUPER-BIOS program. If you have an XT compatiblewith a drive interfaceconnector on the motherboard, it must providea SUPERBIOS program. Dono use the IBM Advanced Diagnostic FormatOption.The low-level format is performed just oncefor each physical drive.When you dynamically configure a drive as twovirtual drives(partions), perform the low-level format onlyon drive C and the runthe DOS FDISK and FORMAT utilities on bothlogical drives (C and D).MFM Drive Tables (Translation Mode)----------------------------------- +--------+--------+--------+--------+ |TABLE 1 |TABLE 2 |TABLE 3 |TABLE 0 | +--------+--------+--------+--------+ |20 MB|30 MB |40 MB |20 MB| +--------+--------+--------+--------+ |615 Cyl.|615 Cyl.|977 Cyl.|612 Cyl.| |4 Heads |6 Heads |5 Heads |4 Heads | |616 RWC |616 RWC |978 RWC |450 RWC | |616 WPC |616 WPC |978 WPC |450 WPC | |11 EBL|11 EBL |11 EBL |11 EBL| |5 CCB|5 CCB |5 CCB |5 CCB| +--------+--------+--------+--------+RLL Drive Tables (Non-translation Mode)--------------------------------------- +--------+--------+--------+--------+ |TABLE 4 |TABLE 5 |TABLE 6 |TABLE 0 | +--------+--------+--------+--------+ |20 MB|30 MB |40 MB |20 MB| +--------+--------+--------+--------+ |782 Cyl.|782 Cyl.|782 Cyl.|615 Cyl.| CCB =Command control block |2 Heads |3 Heads |4 Heads |4 HEads | option byte |784 RWC |784 RWC |784 RWC |616 RWC | Cyl. = Cylinders |784 WPC |784 WPC |784 WPC |616 WPC | RWC =Reduced write current |11 EBL|11 EBL |11 EBL |11 EBL| WPC = Write precompensation |7 CCB|7 CCB |7 CCB |7 CCB| EBL = Maximum correctable +--------+--------+--------+--------+ error burst rateInterleave----------5:1 interleave for optimum data throughput(3:1 interleave when inburst mode)g63,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Feog4d71f%2B%3Eg63-14e9654ce16-0x105-->
