Groups > alt.folklore.computers > #215458

Re: An Xmyth stack overflow ?

From	Dan Espen <dan1espen@gmail.com>
Newsgroups	alt.folklore.computers
Subject	Re: An Xmyth stack overflow ?
Date	2020-12-12 10:31 -0500
Organization	A noiseless patient Spider
Message-ID	<rr2npd$uod$1@dont-email.me> (permalink)
References	(5 earlier) <55f722ff-9411-45f6-8bc3-13d44c911fb3n@googlegroups.com> <rr16t31si7@news4.newsguy.com> <rr1jdg$u9i$1@dont-email.me> <2114942093.629474161.586458.peter_flass-yahoo.com@news.eternal-september.org> <kml9tf12mr3t9il8hvb4ieiqa6b2bksnmf@4ax.com>

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J. Clarke <jclarke.873638@gmail.com> writes:

> On Sat, 12 Dec 2020 06:58:19 -0700, Peter Flass
> <peter_flass@yahoo.com> wrote:
>
>>Dave Garland <dave.garland@wizinfo.com> wrote:
>>> On 12/11/2020 7:37 PM, Charlie Gibbs wrote:
>>>> On 2020-12-11, Gerard Schildberger <gerard46@rrt.net> wrote:
>>>> 
>>>>> On Friday, December 11, 2020 at 12:13:39 PM UTC-6, John Levine wrote:
>>>>> 
>>>>>> Mike Spencer  wrote:
>>>>>> 
>>>>>>> I think my Osborne I was more powerful than the IBM 1620. (Serious
>>>>>>> tecnology wonks may correct me.)
>>>>>> 
>>>>>> No doubt. The IBM 1620 was known as CADET for Can't Add, Doesn't Even
>>>>>> Try. It was a decimal serial machine and did all arithmetic by table
>>>>>> lookup. Each instruction took 100us or more. Nonetheless, it was
>>>>>> reliable and fast enough that it was used as part of the IBM 1710
>>>>>> which was the first real time process control system.
>>>>> 
>>>>> The above reply applies to the  IBM 1620 Model I  (one).
>>>>> The word  "CADET"  was the code name before the first delivery,  it was
>>>>> just a code word;  almost all IBM hardware had a code name assigned to it
>>>>> during design/production before the first delivery.   They were just names.
>>>>> The  model II  (two)  didn't use lookup tables except for multiplication.
>>>>> Model III was about to go into production,  but was cancelled because of
>>>>> the upcoming IBM 360,  and IBM didn't want anything to compete with the
>>>>> 360,  even other IBM computers.
>>>> 
>>>> Sounds familiar, like the way the original IBM Personal Computer
>>>> was crippled so as not to compete with the Displaywriter.
>>>> 
>>> It's a different market. While you could get CP/M-86 and UCSD p-System 
>>> for the D'wr (pre-IBM PC), I think it had a 1MHz CPU and CP/M-86 at 
>>> least was very sluggish compared to a 4MHz Osborne O-1. But our D'wrs 
>>> had more RAM and could run a bigger SuperCalc spreadsheet 
>>> (sluggishly).  When we did that, the challenge was making the printer 
>>> work. IBM did its classic routine, being unfailingly polite and 
>>> switching me from one person who couldn't tell me what the control 
>>> codes were to another until I gave up and did it by trial and error.
>>> 
>>> IBM later sold "Displaywrite" softwere for the PC that emulated a lot 
>>> of the software features.
>>> 
>>
>>The display on the Displaywriter was high-quality. Going from a real
>>Displaywriter to Displaywrite on a PC was a big step backwards for anyone
>>who did a lot of word processing.
>
> What was "high quality" about the monitor?  I did hear a lot of
> kvetching about the PC display back then but generally the people
> kvetching got the color display instead of the green screen.

Bitsavers says there were 2 displays available, 80x25 and 64x100,
both monochrome.

I don't see the resolution, but the screen shots on the 80x25 look
pretty clear, at least as good as the PC/3270.  I think 64x100 would
out-do most PCs for a while.  By the time I saw my first PC/3270 it was
full color, better than the DisplayWriter.

I remember the first PC displays were pretty poor resolution wise.
If you wanted to really see things you went with the monochrome
Hercules.  (Never saw one of those.)

-- 
Dan Espen

Thread

An Xmyth stack overflow ? gareth evans <headstone255@yahoo.com> - 2020-12-07 11:38 +0000
  Re: An Xmyth stack overflow ? gareth evans <headstone255@yahoo.com> - 2020-12-07 11:41 +0000
    Re: An Xmyth stack overflow ? maus <maus@dmaus.org> - 2020-12-08 15:08 +0000
      Re: An Xmyth stack overflow ? maus <maus@dmaus.org> - 2020-12-10 17:52 +0000
        Re: An Xmyth stack overflow ? Dave Garland <dave.garland@wizinfo.com> - 2020-12-10 22:46 -0600
          Re: An Xmyth stack overflow ? Mike Spencer <mds@bogus.nodomain.nowhere> - 2020-12-11 01:47 -0400
            Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-11 06:54 +0000
              Re: An Xmyth stack overflow ? Bob Eager <news0073@eager.cx> - 2020-12-11 09:46 +0000
            Re: An Xmyth stack overflow ? John Levine <johnl@taugh.com> - 2020-12-11 18:13 +0000
              Re: An Xmyth stack overflow ? Gerard Schildberger <gerard46@rrt.net> - 2020-12-11 11:29 -0800
                Re: An Xmyth stack overflow ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-12-12 01:37 +0000
                Re: IBM 1620 and its successors, not An Xmyth stack overflow ? John Levine <johnl@taugh.com> - 2020-12-12 02:22 +0000
                Re: IBM 1620 and its successors, not An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 06:58 -0700
                Re: 360/44, was IBM 1620 and its successors, not An Xmyth stack overflow ? John Levine <johnl@taugh.com> - 2020-12-12 19:16 +0000
                Re: 360/44, was IBM 1620 and its successors, not An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 19:57 -0700
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-11 21:44 -0500
                Re: An Xmyth stack overflow ? Dave Garland <dave.garland@wizinfo.com> - 2020-12-11 23:11 -0600
                Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 06:58 -0700
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 09:43 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 10:31 -0500
                Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-12 17:40 +0000
                Re: An Xmyth stack overflow ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-12-12 19:28 +0000
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 13:12 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 13:28 -0500
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 17:35 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 17:49 -0500
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 19:31 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 19:54 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 20:08 -0500
                Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 19:58 -0700
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 22:13 -0500
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 23:07 -0500
                Re: An Xmyth stack overflow ? Dan Espen <dan1espen@gmail.com> - 2020-12-12 23:28 -0500
                Re: An Xmyth stack overflow ? maus <maus@dmaus.org> - 2020-12-14 19:13 +0000
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-12 23:04 -0500
                Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 19:57 -0700
                Re: An Xmyth stack overflow ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-12-13 16:23 +0000
                Re: An Xmyth stack overflow ? J. Clarke <jclarke.873638@gmail.com> - 2020-12-13 11:47 -0500
                Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-13 19:18 +0000
                Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-13 15:11 -0700
                Re: An Xmyth stack overflow ? cb@elaine.df.lth.se (Christian Brunschen) - 2020-12-13 23:28 +0000
                Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-13 23:23 +0000
                Re: An Xmyth stack overflow ? Niklas Karlsson <anksil@yahoo.se> - 2020-12-13 09:05 +0000
                Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-12 19:57 -0700
                Re: An Xmyth stack overflow ? Dave Garland <dave.garland@wizinfo.com> - 2020-12-13 11:22 -0600
                Re: An Xmyth stack overflow ? Mike Spencer <mds@bogus.nodomain.nowhere> - 2020-12-12 01:55 -0400
          Re: An Xmyth stack overflow ? gareth evans <headstone255@yahoo.com> - 2020-12-11 11:46 +0000
            Re: An Xmyth stack overflow ? Peter Flass <peter_flass@yahoo.com> - 2020-12-11 17:22 -0700
              Re: An Xmyth stack overflow ? John Levine <johnl@taugh.com> - 2020-12-12 02:24 +0000
              Re: An Xmyth stack overflow ? Bob Eager <news0073@eager.cx> - 2020-12-12 10:16 +0000
      Re: An Xmyth stack overflow ? Mike Spencer <mds@bogus.nodomain.nowhere> - 2020-12-10 16:28 -0400
  Re: An Xmyth stack overflow ? usenet@only.tnx (Questor) - 2020-12-08 18:08 +0000
    Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-08 18:53 +0000
      Re: An Xmyth stack overflow ? gareth evans <headstone255@yahoo.com> - 2020-12-08 21:01 +0000
        Re: An Xmyth stack overflow ? Ahem A Rivet's Shot <steveo@eircom.net> - 2020-12-08 22:28 +0000
          Re: An Xmyth stack overflow ? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-12-09 01:12 +0000
            Re: An Xmyth stack overflow ? gareth evans <headstone255@yahoo.com> - 2020-12-09 11:43 +0000
        Re: An Xmyth stack overflow ? drb@ihatespam.msu.edu (Dennis Boone) - 2020-12-08 20:57 -0600

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