waashk/20ng huggingface dataset:
DXB132@psuvm.psu.edu writes: >In article <1qlbrlINN7rk@dns1.NMSU.Edu>, bgrubb@dante.nmsu.edu (GRUBB) says: >>In PC Magazine April 27, 1993:29 "Although SCSI is twice as fasst as ESDI, >>20% faster than IDE, and support up to 7 devices its acceptance ...has    >>long been stalled by incompatability problems and installation headaches."                                                                        >I love it when magazine writers make stupid statements like that re:       >performance. Where do they get those numbers? I'll list the actual >performance ranges, which should convince anyone that such a                >statement is absurd:                                                      >SCSI-I ranges from 0-5MB/s.                                                 >SCSI-II ranges from 0-40MB/s.             >IDE ranges from 0-8.3MB/s.                           >ESDI is always 1.25MB/s (although there are some non-standard versions) ALL this shows is that YOU don't know much about SCSI.  SCSI-1 {with a SCSI-1 controler chip} range is indeed 0-5MB/s and that is ALL you have right about SCSI SCSI-1 {With a SCSI-2 controller chip}: 4-6MB/s with 10MB/s burst {8-bit}  Note the INCREASE in SPEED, the Mac Quadra uses this version of SCSI-1  so it DOES exist. Some PC use this set up too. SCSI-2 {8-bit/SCSI-1 mode}:          4-6MB/s with 10MB/s burst SCSI-2 {16-bit/wide or fast mode}:  8-12MB/s with 20MB/s burst SCSI-2 {32-bit/wide AND fast}:     15-20MB/s with 40MB/s burst   By your OWN data the "Although SCSI is twice as fast as ESDI" is correct With a SCSI-2 controller chip SCSI-1 can reach 10MB/s which is indeed "20% faster than IDE" {120% of 8.3 is 9.96}. ALL these SCSI facts have been posted to this newsgroup in my Mac & IBM info sheet {available by FTP on  sumex-aim.stanford.edu (36.44.0.6) in the info-mac/report as  mac-ibm-compare[version #].txt (It should be 173 but 161 may still be there)}  Part of this problem is both Mac and IBM PC are inconsiant about what SCSI is which.  Though it is WELL documented that the Quadra has a SCSI-2 chip an Apple salesperson said "it uses a fast SCSI-1 chip" {Not at a 6MB/s, 10MB/s burst it does not. SCSI-1 is 5MB/s maximum synchronous and Quadra uses ANsynchronous SCSI which is SLOWER}  It seems that Mac and IBM see SCSI-1 interface and think 'SCSI-1' when it maybe a SCSI-1 interface driven in the machine by a SCSi-2 controller chip in 8-bit mode {Which is MUCH FASTER then true SCSI-1 can go}.
Hi, all. This is my first posting, so be gentle...  I have a Zenith external floppy which has a DB25 connector, and I'd like to use it with my Sharp and Toshiba laptops, which also take a DB25 for their ext floppy, but it doesn't work.  I have the pinouts for the Zenith, and would like to make adapters so I can use it.  Does anyone have pinouts for these or other manufacturers' DB25 ext floppy connectors?  I would greatly appreciate this info, either by e-mail or fax.  Thanks very much,                   Jeff, aka flyboy@coyote.trw.com                         fax (310) 882-8800
I have a 286 with a Western Digital WD-93044A hard drive. This drive is  782 cylinders with 4 read write heads PHYSICALLY, but LOGICALLY it is 977 cylinders with 5 read write heads (??!!).  In the CMOS setting I am instructed to set it to type 17 (IBM 977 cyl. 5 read/write heads),  THE PROBLEM:  I was sent Western Digitals ISPFMT low level program from the manufacturer, and was instructed to run it on the hard drive with the CMOS setting set to type 17.  This worked "o.k." and I verified the disk using the same program.  I then reloaded DOS which did a high level format, again no errors, no bad sectors, etc.  BUT.... when I run Norton Speedisk 6.01 (or any other disk optimizer) with the verify option set ON, I get ERROR verifying sector NNNN, where NNNN can be any number (not the same all the time).  ANY IDEAS AS TO WHAT IS GOING ON HERE WOULD BE APPRECIATED!  Thank you!
Hi! I was wondering if anyone out there could point me to where I can get the VESA specifications or any relevant books on this subject.  Regards Jimmy
I have a DEC NT 486DX33 that has an Adaptec SCSI controller, hard disk and cd-rom drive. When I add a 3COMM Ethernet card (3C503) and reboot the system I receive an error message that a boot device cannot be found. Pull the 3COMM card and reboot, everything is fine. I've moved the controller and 3COMM card to various slots, different positions (slot before the controller, slot after the controller) with the same result. DEC hasn't responded to the problem yet. Any help would be appreciated.
tdbear@dvorak.amd.com (Thomas D. Barrett) writes:  >In article <im14u2c.735176900@camelot> im14u2c@camelot.bradley.edu (Joe Zbiciak) writes: >>What's the word on the chipset?  Is this a ROM bug specific  >>to a specific brand using the Rockwell, or is it the Rockwell >>chipset itself?  >There were an assortment of firmware problems, but that is pretty much >expected with any FAX/modem talking with a different FAX or modem >which may have also been revised or is new.  I'm pretty much >oblivious to any current firmware problems, so you'll have to get it >from someone else.  Someone Else, could you please comment on that. I have just bought a Twincom 14.4DFi, which has a Rockwell chipset. It wasn't cheap so I would like to hear of problems I'm likely to run into.  >However, I can tell you to stay clear of any board which uses the >Rockwell MPU (as opposed to the DPU) for an internal implementation. >This is because the MPU used "speed buffering" instead of having a >16550 interface.  Without the 550 interface, the number of interrupts >are still the same and thus may get dropped under multitasking >conditions (like in windows).  As far as I know, the "speed buffering" >works OK for external modems if a 550 is used on the internal serial >port board.  Phew, I was lucky! The Twincom internal version has a 550A and one of the Rockwell chips is marked RC144DP.  But still I would like to hear more of the above mentioned firmware problems.
Hi...I need some info on video card.  I am looking a video card that can deliver a high quality picture.  I need the card to display images (well for advertising company btw), so it must be rich with colors and the speed must be fast too.  I am just wondering if somebody can advise me what to buy for such application, and possible the address of the vendor.
This may be the dumbest question of the year, but is there a way to 'piggyback' or expand a 6-slot motherboard (all 16-bit) to get the usual 8?  My case has slots for 8, and I'd like to get a scanner, but with all my other cards I'm already max'd out! I'm hoping that a simple solution exists, e.g. an adapter that turns one slot into three.  I don't mind if it turns it into 8-bit slots, as I can put my I/O card, MIDI card, and Soundblaster card there. My other cards are 16 bit (IDE/Floppy, SVGA, modem).  If there is such an expander, does that screw up performance of everything else?  I'd hate to buy a new motherboard! :-(
A friend of mine called me on the phone and told me he was wathcing CNN and saw a report that the ruling prohibiting AMD from selling their i486 clones has been thrown out, making it legal for AMD to ship in the US. Can anyone out there verify this?
INABU@ibm.rz.tu-clausthal.de (Arnd Burghardt) writes:  >Hi folks, >  >Yesterday i visited the CEBIT (hannover, germany), where Intel was presenting >the Pentium (586) processor. They had four (in words 4) machines with this >beast running. So they presented it nicely (unly by running picture shows), >this i could do on a 80286 ;-)). The presentor promised it to be binary >compatible to the i486, and I said I don't believe. I showed him a ONE_DISK_ >Linux-System (Emergency disk, with patched lilo to boot from disk), and said >him : Convice me, boot this :  No guts, no glory ! A he decided no glory. >He won't let anybody touch his holy cows, and not even boot a suspect OS. >  >I thought by myself 'This is the coward of the day' and went back to earth. >  >What cn we learn : this technology is far from industrial-standarts, so you >can expect this beast in your local computer-shop at least in spring next >year.... >  >only my 2cents....  Yes only your $00.02.  Here's mine.  If I were running at a new chip at a Trade show, and had little to no real technical knowledge,  I wouldn't let some stranger with a diskette boot my demo machine.  If the demo machine is down too long people will not see my nice demos, and if this purposted LINUX diskette is really something that will wipe the disk, or is loaded with a VIRUS!, I'm in deep trouble.  No marketer in their right mind would let you do this, unless they had specifically invited people to do so, and provided machines to do it with.  We can we learn : This technology will be shipping from PC vendors in May 1993, and will be i486 compatible.
MG>joohwee students (neural@iss.nus.sg) wrote: MG>> 	I went buying SIMMs recently, and the sales person told me that  the MG>> are 9-chip SIMMs and 3-chip SIMMs, and one cannot use them interchan MG>> If you use one, you have to use all of the same type.  don't believe everything you are told.  I can tell you that mixing them  between 'banks' ok, and I can't see why mixing in one bank is not unless  they are of different speeds ( e.g. mixing of 60ns and 100ns SIMMs in one  bank ).  The two only differ in the type of chips it uses.  Assuming that  the SIMMS are 1Mx9 ( 9 bit wide ), here is the two equivalent  configuration.  The 3-chip SIMM uses two 4-bit wide 4Mbit (1M of 4-bit  nibbles ) and one 1-bit wide 1Mbit chip ( for a total of 9-bit wide 1Mbyte  ).  The 9-bit SIMM uses nine 1-bit wide 1Mbit chips.  These are equivalent  because of the way that it is 'pinned' on the SIMM board.  At the SIMM  interface, they both act as 9-bit wide 1MByte SIMMS ( 2*4+1=9*1 ).  [sorry  if too techie for ya].   MG>> 	Similarly, one cannot plug in two 1MB SIMMs and one 4MB SIMMs to  gi MG>> the system a total of 6 MEG. Why is that so ?? If my system supports MG>> of 8 MEG (it has 8 SIMM slots), can I plug in 4 4MB SIMMs to give my MG>> 16MB ??  That sounds correct.  the problem is that if your computer takes 9-bit  wide SIMMs, you can not mix different sizes in one bank.  Why you ask?   Simple,  if you understand why there is banks.  Assuming you have a 32-bit  CPU ( 386DX or 486 ), the data bus (e.g. the mechanism to retrieve data  from memory ) is 32-bits wide, so the computer expects to see 32 bits when  it asks for data.  To get that bandwidth ( 32-bit wide ), the motherboard  links 4 1Mx9 ( one bit is not data, but parity, so I will ignore that in  this simple explaination ) to get 32bits [ (9-1)*4=32 bits ].  That means  that a SIMM in a bank stores only 1/4 of the 32 bit wide data.  If you  have a 16-bit bus, two 1Mx9 SIMMs are linked together to get 16-bit wide  data, which is the reason why 286 banks are 2 SIMMs wide, and 32-bit banks  are 4 SIMMs wide.  If your computer required 1Mx36 ( e.g. 32-bit wide data  with 4 parity bits, used in some PS/2s and ASTs ), you could upgrade by  one SIMM at a time.  Hope that this message is not over your head, but the answer to your  question was not simple.  I could of just said, 'because I said so.'  -rdd      ---  . WinQwk 2.0b#0 . Unregistered Evaluation Copy  * KMail 2.95d W-NET HQ, hal9k.ann-arbor.mi.us, +1 313 663 4173 or 3959
I'm using Norton Cache 5.0, which is really nice but horrible incompatible. Some games won't work it, my streamer software won't work with it and Windows doesn't like it at all. But when copying or deleting lots of small files, only NCACHE is really fast. You see, to write a file the FAT must be changed. But to write 1000 files the FAT must be changed only once. Is there any cache program out there which is smart enough to do the same and good enough to run with all my applications? Any help is really appreciated.
------------------------------------------------------------------------- Netters!  I need a cdrom drive as my order was cancelled and thought 'Why not ask the net.community'? I was ordering a Nec CDR-74 but saw so much cheaper ones that I want to know more. The drive will be used to install software and (if available) for listening to CD's. Perhaps some day I'll want to use it to read the other CD's, but that's not really relevant at the moment.  I've been offered the following CD-ROM players, for the prices stated. They all claim to have SCSI-I, and operate under OS/2. The drives are not listed in the cdrom-faq and therefor, please give your opinions on the drives, i've got the impression that they're not all SCSI. Actually the Nec was listed as non-scsi in the cdrom-faq and as a compatible SCSI product in the os2faq.  I've calculated the prices as having dutch guilders times 2. It's actually about times 1.8.  Mitsumi CRMC     $240 Philips LMS-I    $300 Philips 205      $350 Toshiba ?        $370 Nec CDR-74       $650  Who bought that Trantor that is in the faq? It's extremely cheap and SCSI, so what's the trick or where can I order it (Holland using MasterCard).  Trantor T128     $200
Hello,  	I have the following list of books about ISA/EISA buses:  1. ISA System Architecture    by Tom Shanley/Don Anderson    MindShare Press, 1993 $34.95  2. EISA System Architecture    by Tom Shanley/Don Anderson    MindShare Press, 1993 $24.95  3. ISA, EISA: PC,XT,AT,E-ISA,ISA, and EISA I/O timing and specs.    by Edward Solari, Copyright 1992    ISBN: 0-929392-15-9  4. AT Bus Design    by Edward Solari, Copyright 1990    ISBN: 0-929392-08-6  5. Interfacing to the IBM PC/XT    by Eggebrecht, Lewis C. Copyright 1990  	Do you have any comments on any of them?  	Please reply by e-mail,
In article <pdb059-210493145738@kilimanjaro.jpl.nasa.gov>, pdb059@ipl.jpl.nasa.gov (Paul Bartholomew) writes:  |> > When two or more devices in an ISA bus PC share an interrupt, it's |> > because they're implemented by a single card. |>  |> Interesting.  Would you care to explain to me then, how my SoundBlaster |> Pro card and my printer card are sharing IRQ 7 successfully?  I assure |> you that they are both set to IRQ 7 and that I have no problem.  My |> computer is a DTK 286-12 IBM clone. |>  |> Paul Bartholomew |> pdb059@ipl.jpl.nasa.gov |>  You can configure devices for the same IRQ as long as you don't use them *simultaneously*, under Dos at least. Both LPT1: and SB just sit there until you tell them to do something. You can't configure a SoundBlaster for IRQ7 if you got an Ethernet Card which hits that IRQ a thousand times or so per  second.
Greetings,  	I am looking to upgrade my hard drive to a much bigger one since I find myself kinda cramped on space, althuogh I have never filled it I would like the extra comfort of 30 megs or so.  If anyone would like to sell/trade a newish 80 meg or bigger hard drive for 125 straight and 75 with a trade please e-mail me back at johng2matt.ksu.ksu.edu with an offer.  I would also sell my hard drive for about 60$ if you really want it.  it's a 42MB western digital IDE.  Other than that I am not sure what the transfer rate is, but it is pretty fast. faster than my roommates teac drive.  I have addstor running on it now and have had it for about 5 months.  I have *never* had a problem with it and would guarantee it works upon deliveree.  Thanks    			John
Maybe I should have been clearer.  I have a Intel 386DX/25 that I would like to use to put together a system however all the motherboards that the local vendors are now selling are running either at 33 or 40 MHz.  I guess I can cross my fingers and hope the CPU runs at that speed. ;^)  I think I'll take Mark's advice and see if any of the boards have a socketed oscillator and head down to the local electronics store...  Thanks for the info...
arosborn@oregon.uoregon.edu (Alan Osborn) writes:  > In article <1993Apr19.090707.3686@tdb.uu.se>, m88max@tdb.uu.se (Max Brante) w > >Have anybody succeded in converting a atari monomchrome monitor into a > >mono VGA monitor. If so please let me know exactly how you did and what > >graphics card you used.  > I wish I could help!  I posted a similar question about two weeks ago; > I got no response at all.  I've asked locally at my friendly Atari store. > I was told that it should be possible, but that they had no idea how > it might be done.  Nor did they particularly care to investigate.  OK, here's my results so far....  1: You have to define the monitor as LCD - it doesn't really support    Analogue video input (It works, but isn't very linear...)  2: The incoming sync pulses need inverting. This is best achieved    with either a cmos XOR package or a transistor inverter.    If you don't know how to do it, don't even contemplate it.. :-)  3: It'll only work in standard VGA mode.  OK, having said that, I'm trying to either find a circuit or IC which will act as a universal sync decoder.  I want somethikng which basically only detects the leading sync pulse edge, and doesn't care about the polarity, outputting the -ve going pulses that the atari monitor requires.  There are 2 reasons for doing this  1: VGA cards change their sync polarity depending which mode they're    in - herc emulation is +,- while MVGA is +,+ for example.  2: It means I don't have to put a toggle switch on the back of the    monitor in order to be able to run it off both the atari and my    IBM. Currently I have 3 (Yes, 3!) monitors sitting on my desk,    and I want to get that number down as much as possible.    Being able to use the atari monitor as a paper-white VGA    will cut things down to 2. If I forget about Atari colour,    I can get down to 1.  Ultimately, the best course of action is to get a multisync monitor, but I'm as pressed for cash as anyone else, so it'll have to wait...
AY>  In many recent advertisements I have seen both "486DX-50" and "486DX AY>based systems. Does the first really exists and does it imply that all AY>circuitry on the motherboard with it works at that speed, as opposite  AY>latter, where only the internals of the CPU are working at 50MHz? AY> AY> Many thanx in advance! AY> AY>Andrew.  Andrew, yes there is a DX and DX2 version of the 50MHz 486.  If you are  considering buying one or the other, definitely go for the DX with a nice  size external cache!  The performance is far greater.  The DX2 only has the internal 8k cache to work with at 50MHz, while the DX  has a potentially much larger cache to work at 50MHz with.  Neither  systems could actually run a program out of main memory, since DRAM is  still too slow for that high of bus speed ( 60ns = 16.66MHz < 50MHz ).  -rdd  ---  . WinQwk 2.0b#0 . Unregistered Evaluation Copy  * KMail 2.95d W-NET HQ, hal9k.ann-arbor.mi.us, +1 313 663 4173 or 3959
I'm in need of a videotaped copy of a pc (pd) program.  Please let me know if you can do this.
In article <1qjfa0INN6g5@titan.ucs.umass.edu> dtodd@titan.ucs.umass.edu (David M. Todd) writes: >From: dtodd@titan.ucs.umass.edu (David M. Todd) >Subject: Re: Shopping for a new [NEC?] monitor >Date: 15 Apr 1993 07:01:20 -0400 >In article <1qhppp$gha@darwin.sura.net> wbarnes@sura.net (Bill Barnes) writes: >>Basically I'm looking for a 15" SVGA (1024x768) non-interlaced >>monitor.  The NEC 4FG is the one most of the computer mags use as >>their standard, and from what I've seen and heard it looks pretty >>good, but it's a bit expensive (700 bucks is the best deal I've seen). >>So I thought perhaps I might find something as good for less.  Any >>recommendations?  I also thought about the NEC 3FGx, which has the >>same specs as the 4FG except for the scan frequency, which is more >>limited; anybody have any comments on this one?  Would it work with > >I believe that NEC is replacing the 4FG and 3FGx with 4FGe and 3FGe >models, reportedly being released at the end of this month.  I'm >waiting for a 4FGe, the main difference being a 3 year warranty and >higher refresh rates at the higher resolutions.  It sounded from a PC >Magazine note that the 3FGe was being boosted in a number of ways. >Call the NEC 800 number and have them send you info. > > >|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ David M. Todd ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| >|Department of Psychology, University of Massachusetts, Amherst, MA 01003 USA| >|Phone: 413/545-0158 ___ <David.Todd@Psych.UMass.EDU> ____  Fax: 413/545-0996| > > > > I have been using a NEC 3FGx for several months now.  Several others here  also have this monitor.  We have had no problems.  Personally I would spend  extra money for this monitor and sacrifice other features on a PC such as 33  MHz viz 50 Mhz.  Based on the comments of others you might want to view the  3FGX vs the 4 series on a PC running windows at 1024x768.  The refresh rate  appears ok for me, but you might feel differently.  Finally speaking of  spending money, with the size of today's files, etc, a tape backup is  certainly worth $200-$300.  Recently I set up a friend's PC 50Mhz and VESA  local bus.  The redraw time for a graphics program was only a factor of 2  faster which I doubt warrants the extra cost.
In article <1r25nt$oa5@ratatosk.uninett.no> hktth@nho.hydro.com writes: >In article <1993Apr20.191255.10115@news.columbia.edu>, imj1@cunixa.cc.columbia.edu (Imad M Jureidini) writes: >|> Hi! >|> 	I recently purchased the Toshiba 3401 CDROM.  I own an Adaptec 1542B >|> SCSI card, and I have so far failed to get the CDROM to work under DOS.  It > >One of the ASPI-drivers (I think it's the ASPICD) supports a /NORST >paramter, which means to not reset the SCSI bus when it loads. This >fixed the problem a friend of mine was having with his adaptec+tosh  >3401. > >Regards, > >  -Terje It worked!!! Thank you very much!
In article <1993Apr14.132300.27816@kosman.uucp>, kevin@kosman.uucp (Kevin O'Gorman) writes: > Anybody seen the date get stuck? >  > I'm running MS-DOS 5.0 with a menu system alive all the time.  The machine > is left running all the time. >  > Suddenly, the date no longer rolls over.  The time is (reasonably) accurate > allways, but we have to change the date by hand every morning.  This involves > exiting the menu system to get to DOS. >  > Anyone have the slightest idea why this should be?  Even a clue as to whether > the hardware (battery? CMOS?) or DOS is broken?  I bet it suddenly started sticking when you  started leaving the PC running the menu all night.  There is a limitation/bug in the date roll-over software in PC's that means you have to be doing something like waiting for keyboard input via a DOS call rather than a BIOS call (as menus often use) otherwise the code to update the date after midnight never gets called.   Somebody might be able to correct the details in case I've mis-rememberred them, but I think you have to change the menu program (if you have the sources) or add a TSR or system patch or something.  As far as I know the CMOS clock keeps the right time (in fact about 7 seconds/day better than DOS's clock).
Hello,  	I have a 486sx25 ISA machine with Pheonix BIOS.  Currently I have   8 megabytes of RAM installed via eight 1 MG SIMMS on the motherboard: ie.   both banks are full, and there is no space for more SIMMS.  I am thinking   of running OS2 on my machine and Possibly Linux with X windows, and I know   that more RAM would be helpful.  However with SIMMS, the only solution I   can see is to sell my 8 Megs for about $180, and by 4 4mg SIMMS for about   $400 used. Apart from the fact that I can't afford the price right now,   the entire process of selling RAM and buying it used probably means that   the machine might be down for a number of days which I would rather   avoid...  So my question is, do the AT RAM boards that plug into a free slot work   well with a 486 ISA machine. I have seen some being sold used for about   $90 with 4 Mg with space for another 4Mg's.  If these boards do work, how   do they do it?  Is a device driver needed, or will the BIOS pickup the   extra RAM as it does with the SIMMS on the mother board? I know that the   ISA expansions slots are 16-bits and 486 SIMM memory is 32 bits, so   probably all of this is just wishful thinking... However any help is truly   appreciated.  -Eric