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From: Clem Cole <clemc@ccc.com>
To: Arthur Krewat <krewat@kilonet.net>
Cc: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] 68k prototypes & microcode
Date: Wed, 3 Feb 2021 20:35:59 -0500	[thread overview]
Message-ID: <CAC20D2OoT4LAuAc4-WJFzqvC4AE1D7GXNBH=eQt3GruSVZVXNg@mail.gmail.com> (raw)
In-Reply-To: <bce2c77e-dd8d-a0f2-5b27-0f9239c76738@kilonet.net>

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No, that was the 16032 from nat semi.

I believe at least Nick and Les had been building oil drilling controll
systems using pdp11s and custom TTL For Schulmerger before they came to
Moto.  They were definitely pdp11 fans.   But they had used 360 systems at
UT in college.  So they idea of a 24 bit pointer stored in a 32 bit word
they took from it.

Remember the chip was a 16 chip inside.  It has 16 bit Barallel shifter and
All 32 bit operations took 2 ticks.    And int was naturally 16 bits which
is what it was in my compiler.

I think it was Jack Test's compiler from MIT that was the first one ILP32
one for the 68k.

I used to commute to work at Stellar with Les and he told me many of the
stories btw.  One of them I remember was they were worried about the
Barallel shifter because it was one of the pieces that was different
between the TTL prototype and the MOS implementation and it was the largest
pattern on the die.  It was one of the few parts of the chip that had full
spice simulation.

Clem

On Wed, Feb 3, 2021 at 8:18 PM Arthur Krewat <krewat@kilonet.net> wrote:

> On 2/3/2021 7:41 PM, John Gilmore wrote:
> > When the 68000 was announced, it was obviously head-and-shoulders better
> > than the other clunky 8-bit and 16-bit systems, with a clean 32-bit
> > architecture and a large address space.
> The 68K always reminded me of the VAX.
>
> art k.
>
> --
Sent from a handheld expect more typos than usual

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  parent reply	other threads:[~2021-02-04  1:36 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-29 10:49 [TUHS] AT&T 3B1 - Emulation available Arnold Robbins
2021-01-29 13:49 ` Ronald Natalie
2021-01-29 14:37   ` Clem Cole
2021-01-31  7:57   ` arnold
2021-01-31  8:41     ` Rich Morin
2021-02-03  7:53 ` emanuel stiebler
2021-02-03  7:59   ` arnold
2021-02-03  8:53     ` Ed Bradford
2021-02-03  8:58       ` arnold
2021-02-03 10:13         ` Ed Bradford
2021-02-03 14:58           ` Clem Cole
2021-02-03 15:33             ` Henry Bent
2021-02-03 16:53               ` Clem Cole
2021-02-04  0:41             ` [TUHS] 68k prototypes & microcode John Gilmore
2021-02-04  0:52               ` Al Kossow
2021-02-04  1:10               ` Arthur Krewat
2021-02-04  1:33                 ` Larry McVoy
2021-02-04  1:47                   ` Al Kossow
2021-02-04  1:57                     ` Al Kossow
2021-02-04  7:23                   ` Arno Griffioen
2021-02-04 11:28                     ` Toby Thain
2021-02-04 15:47                   ` Arthur Krewat
2021-02-04 16:03                     ` emanuel stiebler
2021-02-04 21:55                   ` Dave Horsfall
2021-02-04 22:11                     ` Steve Nickolas
2021-02-04 22:39                       ` Adam Thornton
2021-02-04 22:47                         ` Henry Bent
2021-02-05 14:42                           ` Michael Parson
2021-02-04 22:56                       ` Richard Salz
2021-02-04 23:14                         ` Steve Nickolas
2021-02-04  1:35                 ` Clem Cole [this message]
2021-02-04  2:18                 ` Dave Horsfall
2021-02-04 15:53                   ` Arthur Krewat
2021-02-05  2:16                     ` Dave Horsfall
2021-02-05  2:53                       ` Larry McVoy
2021-02-04  1:14               ` Clem Cole
2021-02-04  1:20                 ` Clem Cole
2021-02-04 14:56               ` John Cowan
2021-02-03 15:20           ` [TUHS] AT&T 3B1 - Emulation available emanuel stiebler
2021-02-03 16:48         ` Doug McIntyre
2021-02-03 10:46     ` emanuel stiebler
2021-02-03 11:13       ` arnold
2021-02-05 12:44 ` Sergio Pedraja
2021-02-07  7:32   ` arnold
2021-02-17 16:07     ` emanuel stiebler
2021-02-17 22:00 ` Ed Carp
2021-02-17 22:14   ` Larry McVoy
2021-02-18  1:30     ` Ed Carp
2021-02-18  7:59   ` arnold
2021-02-18 18:07     ` Brad Spencer
2021-02-13  1:06 [TUHS] 68k prototypes & microcode Jason Stevens
2021-02-13  2:30 ` Gregg Levine
2021-02-13  4:34 Jason Stevens
2021-02-13  6:05 ` Toby Thain

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