test-drb

test-drb@ccmp.vtda.org

101090 discussions

by hhacker＠gte.net

>Jim Strickland >jim(a)DIESPAMMERSCUMcalico.litterbox.com > >Does being designed around XT class hardware count? > Certainly is a laudable argument. How many XT systems are manufactured today? I can't imagine any myself, save for embedded systems. So, i'll vote for the term classic as applied to the presence of an XT foundation. William R. Buckley

27 years, 8 months

LSI-11 Processor Status Word

by healyzh＠aracnet.com

Stupid question: I'm trying to install TCP/IP on my PDP-11/73 running RT-11 V5.4 and am trying to choose the proper driver. Does the PDP-11/73 CPU have a Processor Status Word? Also, if you've got a driver for TSX-11 do you have to have corresponding driver for RT-11 installed? Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.dragonfire.net/~healyzh/ |

27 years, 8 months

WooHoo!! PC/XT Unix anyone?

by cube＠msn.fullfeed.com

Actually, there was a thingy called PC/IX which ran on those non memory-managed systems. I actually managed to snag a copy a few years ago. Jay At 04:28 PM 1/22/99 -0500, cswiger wrote: >Spotted this in a Linuxtoday.com article on the latest >linux kernel: > >"On somewhat of a tangent, there is continuing work to >support a subset of the Linux kernel on 8086, 8088, >80186, and 80286 machines. This project will never >integrate itself with Linux-proper but will provide >an alternative Linux-subset operating system for >these machines. " > >Hmmm, I do have *a* 'C' compiler running on one of those >Compaq luggables... > > Chuck > cswiger(a)widomaker.com >

27 years, 8 months

DELQA Switch Settings

by healyzh＠aracnet.com

OK, I'm almost ready to downgrade my PDP-11/73 to a DEQNA since I've got plenty of Doc's for it :^) Does anyone have the switch settings for DELQA ethernet card such as they are? BTW, for a PDP-11 is there any real difference in the two cards? Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.dragonfire.net/~healyzh/ |

27 years, 8 months

Reiability of wrong media (was: is out of 5-1/4" diskettes

by roblwill＠usaor.net

Well, every computer I have that has 1 MB or more or RAM. Which is a total of Hmm.. 4. All my others only have 640k. two are IBM's, one's a toshiba, and the other's my P200. -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Tony Duell <ard(a)p850ug1.demon.co.uk> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, January 22, 1999 4:27 PM Subject: Re: Reiability of wrong media (was: is out of 5-1/4" diskettes >> >> Every computer that I've ever owned, When it does a memory test of "1 >> megabyte", the listing is always >> >> 1024KB......OK. > >I can't work out if you're agreeing with me or not. > >However, 1024KB _is_ 1 Megabyte. It's 1024 * 1024 (=1048576) bytes. >Unless 'every computer that you've ever owned' defines 1KB as 1000 bytes >(hint : none of mine do that). > >-tony > >

27 years, 8 months

Reiability of wrong media (was: is out of 5-1/4" diskettes

by mbg＠world.std.com

>If so, how does 1474560 become 1.44M, not 1.47M? >The only way is to mix the terms, and use 1024000 as a meg! That is >NEITHER the power of ten, NOR the power of two. In addition, it is NOT >what they then use to measure memory! Heck, I don't know about PCs... they do strange things. In pdp-11 land, we all talked about powers-of-two for memory and disk space, and knew full well that the actual count of bytes was going to be different. 1 Kb is 1024 bytes. 64 Kb is 65536 bytes. 128 Kb was 131072 bytes. and so on... Worked the same way for disks... RT-11 architectural limit for a disk volume is 32 Mbytes. That's 65536 (blocks) * 512 (bytes) ---------------------------- = 32 Mb 1024 * 1024 It all just seemed to work properly *in the ole days*, PCs screwed things up... :-) Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

27 years, 8 months

UCSD P-System info

by sieler＠allegro.com

Hi, If you're interested in the UCSD P-system, the pages at: http://www.ics.uci.edu/~archive/documentation/p-system/p-system.html provide some info on it. The "owner" of the pages is Dr. Alfred Bork, one of the implementors of UCSD Pascal. -- Stan Sieler sieler(a)allegro.com http://www.allegro.com/sieler.html

27 years, 8 months

PC's Limited

by sinasohn＠ricochet.net

At 01:01 AM 1/22/99 -0600, you wrote: >I wonder if it could marquee "I wish I were an Alpha."? Just a thought. I wish I were an Alpha brand computer, and not a cheap taiwanese pc. cuz if I were an Alpha powered server, I would not be stuck with WinNT. Sorry, couldn't resist. --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/

27 years, 8 months

Reiability of wrong media (was: is out of 5-1/4" diskettes

by pete＠dunnington.u-net.com

On Jan 21, 15:15, Don Maslin wrote: > Subject: Re: Reiability of wrong media (was: is out of 5-1/4" diskettes > On Thu, 21 Jan 1999, Tony Duell wrote: > > Don't forget that '720K' 5.25" disks also exist, although they're not > > common on IBM PCs. By that I mean 80 track, double density, double sided, > > 300 oersted coercivity. Most of those do not have the reinforcing ring IIRC. And they're pretty common on non-MSDOS systems. I far more 80-track DS drives than 40-track of any flavour. > > > 720K 5.25" v 360K 5.25": again, an issue of testing/certification, > > > similar to SS v DS. At least for a while, they were manufactured the same, > > > but were tested/certified for 48tpi or 96 tpi. > > > > I have had very little success in formatting 48tpi disks in 96tpi drives. > > As I mentioned earlier, this includes name-brands like 3M.. > > Interesting! I have never had a problem using even generic 48tpi disks > at 96tpi. > - don Nor have I, usually. I tend to treat all double-density 5.25" disks the same. Some of the old ones I have were converted to be "flippy" 40-track, and some time ago I found one such without a label. Not knowing whether it really had been formatted flipped, I tried it out, using the by-now-standard 80-track DS drive and a two-step circuit, and found it had. "OK, so that's a flippy", I said to myself. A little later, I re-read the catalogue -- and got a different listing! I had inadvertantly catalogued side two, with the disk right-side-up -- and realised that the tracks must not line up, so side two had two sets of data, going in opposite rotations, with the tracks interleaved! So I have a three-sided 40 track disk :-) > > > 3", 3.25": Many newbies will get sloppy in reference to 3.5" diskettes, > > > without realizing that there actually were 3" and 3.25" diskettes. 3" > > > were used by Amstradt, some non-US Canon?, and Amdek add-on drives for Coco There are also 2.5" disks, though the only ones I've seen were made by TDK for an early digital camera. Anyone remember the make? Canon? -- Pete Peter Turnbull Dept. of Computer Science University of York

27 years, 8 months

Reiability of wrong media (was: is out of 5-1/4" diskettes

by roblwill＠usaor.net

Every computer that I've ever owned, When it does a memory test of "1 megabyte", the listing is always 1024KB......OK. -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Tony Duell <ard(a)p850ug1.demon.co.uk> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, January 22, 1999 2:58 PM Subject: Re: Reiability of wrong media (was: is out of 5-1/4" diskettes >> Find me an authoritative reference that defines a megabyte as 1024 * 1024 >> bytes and I'll eat a pancake. > >I don't know how 'authoritative' you need, but will an IBM TechRef do? > >The PC/AT one that I've just picked up says : > > >M (1) Prefix mega; 1,000,000. (2) When refering to computer storage >capacity, 1,048,576 (1,048,576= 2 to the 20th power) > >Also >Mb 1,048,576 bytes. > >Incidentaly, it also defines > >Gb 1,073,741,824 bytes (=2^30 ARD) > >Can you find a reference (other than an advert :-)) that defines it any >other way? > >Anyway, I might accept that 1Mbyte = 10^6 bytes, particularly if you >happen to have a decimal or BCD machine :-) (this is classiccmp). But I >don't see any justification for making it 1024000 bytes. And that's the >only way you can have '1.44Mbytes' on a HD 3.5" disk > >-tony > >

27 years, 8 months

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