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'[OT]: Ancient computers (was Re: [PIC]: MPASM woes'
2001\03\07@212857 by Wayne Hortensius

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At 06:44 PM 3/7/01 -0500, Olin Lathrop <spam_OUTolin_piclistTakeThisOuTspamEMBEDINC.COM> wrote:
>>   486 33 running Windows 95 rebooted in DOS mode:  no errors
>>   386 33 running DOS 6.22: no errors
>>   386 20 running DOS 6.20  1 error, (105), saying that mpasm can't find
>> the include file.
>
>I don't know what is wrong, but have you contacted a local museum about your
>computers?  They might be interested.

I see your 386/20 running DOS 6.20 and raise you (lower you?) a Cromemco
Z-2H running Cromix (a multi user Unix system running on a 4MHz Z80 -
shudder). And oh yes, it still works.

And if that doesn't do it, how about a Xerox 820? ;-)

Wayne

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2001\03\08@024110 by spam

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Oh Sweet Memories.

Mommy knitting core memory in front of the fireplace.
Daddy mixing cement for the 10 Meg Harddrive foundation.
Computers where you could smell an infinite loop.
The heat from the vacuum tubes that kept you warm in winter.
The delicate set of small brass hammers for debugging.
The hum of the watercooling system.

That was christmas...
Kent


On 7 Mar 01, at 19:22, Wayne Hortensius wrote:

{Quote hidden}

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2001\03\08@044434 by Alan B. Pearce

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> I see your 386/20 running DOS 6.20 and raise you (lower you?) a Cromemco
> Z-2H running Cromix (a multi user Unix system running on a 4MHz Z80 -
> shudder). And oh yes, it still works.
>
> And if that doesn't do it, how about a Xerox 820? ;-)

How about having a 386SX/33 running UnixWare, and in a DOS Box running a CP/M
simulator that reckoned the Z80 simulation was running at Z80 clock speeds
between 4 and 13 MHz depending what UnixWare was doing in the background.

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2001\03\08@062332 by Russell McMahon

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Here we go again ....

Uphill (both ways) , in the snow, barefoot, without feet, in a cardboard box
at the bottom of a frozen lake - and that was in Summer.
For translation see other ancient days threads :-)

I have a friend who still has a Litton drum computer that AFAIK still worked
last time he turned it on.
ALL memory AFAIR is on the drum including the accumulator which is I think
written and read multiple times around the drum to speed up access.

Best I can probably manage these days is a ZX81 (ZX80?), a D2 kit an old
desktop calculator that uses core for storage and another that uses a wire
spiral and ultrasonics for its 10 or so memories.

No mercury tank memories or CRT RAM memories I'm afraid. No CRT character
generators.
(CRT memory stores data on the phosphor allowing visual inspection of memory
contents. Variation of beam current when writing to on or off phosphor
allows memory contents to be read (destructively?) and then written back if
required.

Once upon a time for main long term data storage computers used spinning
metallic disks with data written and read by pulsing mechanically moved
electro-magnets. Then people discovered CCDs and bubble memories and it was
clear that before long the mechanical memory would have had its day.
Nowadays people use ...... :-)




     Russell McMahon



{Quote hidden}

wrote:
> > >>   486 33 running Windows 95 rebooted in DOS mode:  no errors
> > >>   386 33 running DOS 6.22: no errors
> > >>   386 20 running DOS 6.20  1 error, (105), saying that mpasm can't
find
> > >> the include file.
> > >
> > >I don't know what is wrong, but have you contacted a local museum about
your
{Quote hidden}

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2001\03\08@102327 by David VanHorn

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>Best I can probably manage these days is a ZX81 (ZX80?), a D2 kit an old
>desktop calculator that uses core for storage and another that uses a wire
>spiral and ultrasonics for its 10 or so memories.

I had a couple of those! CRT display, all discrete transistors.
Pretty amazing really.

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2001\03\09@235812 by Steve Smith

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I see your Cromex and raise you a ZX80 (still with orignal packaging) there's
one in the sience museum....
Steve

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2001\03\10@004457 by Steve Bergerson

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I will see your ZX80 and raise you an old 6502.  Or a 1802


From Steve
Not all heroes wear tights and a cape.

@spam@dbergerKILLspamspamoptonline.com
{Original Message removed}

2001\03\10@075239 by Walter Banks

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I raise you ADAM serial number 2

Steve Smith wrote:
>
> I see your Cromex and raise you a ZX80 (still with orignal packaging) there's
> one in the sience museum....
> Steve
>
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2001\03\10@080245 by Rich Clemens

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How about a set of chips to build your own 4004 complete with Intel Box and
instruction manual...

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{Original Message removed}

2001\03\10@090734 by Alan B. Pearce

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>How about a set of chips to build your own 4004 complete with Intel Box and
>instruction manual...

does it come with a set of microcode for the calculator it was originally
designed for?

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2001\03\10@103147 by Richard Clemens

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In four jumbo ROM chips...

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----- Original Message -----
From: "Alan B. Pearce" <spamBeGoneA.B.PearcespamBeGonespamRL.AC.UK>
To: <TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU>
Sent: Saturday, March 10, 2001 9:08 AM
Subject: Re: [OT]: Ancient computers (was Re: [PIC]: MPASM woes)


> >How about a set of chips to build your own 4004 complete with Intel Box
and
{Quote hidden}

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