Back in the late sixties when I had a small engineering company we were
running a DEC pdp-8 computer for producing programs on paper tape for NC
machine tools. It had an ASR-33 teletype as its I/O (10cps paper tape punch
and reader made assembling code a somewhat tedious adventure). When we
upgraded to our first hard disk in 1971 it was one and a half MB, measured
19" wide and took two of us to lift it!
That HDD had a DOS (OS-8) which I believe was the template for CP/M. The
two were certainly very similar in syntax etc.
Regards,
John.
-----Original Message-----
From: Nick Taylor [SMTP:ntaylor@xxxxxxxxx]
Sent: Thursday, March 08, 2001 3:47 AM
To: olympus@xxxxxxxxxxxxxxx
Subject: Re: [OM] Re: [OT] DOS history
Cromemco's OS was far superior to CP/M. I worked for a Cromemco
dealer in '79-'81 and we had several customers that were running
five or six users on a single 4MHz Z-80 system while MP/M would
only reliably support two to three users on the same hardware.
These systems had a 10MB hard drive that cost about $5,000 ...
HD only, not the entire system.
-Nick T.
"Brian P. Huber" wrote:
>
> If I remember right, Gary Kildall(DR pres.) blew off the IBM people when
> they came to talk about CP/M and IBM. He was out flying his plane.
>
> This is WAY off the track, but at the time Apple was getting going, the
> company I worked for was one of the original Apple OEM's. We used them as
an
> early data acquisition device. First product was Apple, then we added a
> Cromemco Z-80-based system.
> The Z-80 (2MHz) was twice the speed of the Apple!
>
> Brian P. Huber
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