-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Ian S. King
Sent: Tuesday, October 04, 2016 8:28 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: mc68010+mc68451 Unix source?
On Tue, Oct 4, 2016 at 3:14 PM, Al Kossow <a...@bitsavers.
On Oct 4, 2016, at 1:44 PM, Ethan Dicks wrote:
>
> So... short form - I'd love to read over some 68K UNIX code to see
> what it would take to make it run on orphan hardware from 30 years
> ago.
If that’s your goal, I think NetBSD will run on 68000 & 68010 hardware with an
On Wed, Oct 05, 2016 at 02:22:53AM -0600, Eric Smith wrote:
> I once wrote an address error handler for the MC68020 so that I could
> execute misaligned code. Very very slowly.
This cannot possibly be sufficiently funny except to anyone who was in
the industry at the time.
mcl
On Tue, Oct 4, 2016 at 4:02 PM, Ken Seefried wrote:
> Dumb question...did the '451 have a mechanism to work around the
> instruction restart issue in the 68000? Or was there some other way
> that was handled?
The MC68451 was just an MMU. The bus fault problem of the MC68000
On Tue, Oct 4, 2016 at 3:14 PM, Al Kossow wrote:
> no. the 68451 is a segmented mmu, so you wouldn't use it for demand
> paging. the normal way you use it in unix is setting up segents for
> text, data, and bss
On Tue, Oct 4, 2016 at 9:28 PM, Ian S. King
On Tue, Oct 4, 2016 at 3:14 PM, Al Kossow wrote:
>
>
> On 10/4/16 3:02 PM, Ken Seefried wrote:
>
> > Dumb question...did the '451 have a mechanism to work around the
> > instruction restart issue in the 68000?
>
> no. the 68451 is a segmented mmu, so you wouldn't use it for
On 10/4/16 3:02 PM, Ken Seefried wrote:
> Dumb question...did the '451 have a mechanism to work around the
> instruction restart issue in the 68000?
no. the 68451 is a segmented mmu, so you wouldn't use it for demand
paging. the normal way you use it in unix is setting up segents for
text,
From: Phil Budne
>
>A quick google search found:
>
No source trees. But...thanks?
KJ
From: "Mike Stein"
>
>Did Unisoft distribution tapes normally include sources?
>
Good question. I don't recall that they did, but it's been a
frighteningly lot of years since I've culled through a Unisoft distro
tape.
KJ
From: Al Kossow
>
> the will probably be 68000
>
> unisoft kernels i've used weren't 010 with the 451
>
Dumb question...did the '451 have a mechanism to work around the
instruction restart issue in the 68000? Or was there some other way
that was handled?
> i'll have to dig
On Mon, Oct 3, 2016 at 10:21 PM, Al Kossow wrote:
> the will probably be 68000
>
> unisoft kernels i've used weren't 010 with the 451
>
> i'll have to dig around for what bits of the 451 kernel i still
> have around. unisoft kept the mmu parts pretty well isolated since
> the
Motorola System V/68 Release 2 versions have been distributed as obj and
source. They will run on MVME115 and MVME121. Both are using 68010 and
68451 MMU
On Tue, Oct 4, 2016 at 6:34 AM, Lyndon Nerenberg wrote:
>
> > On Oct 3, 2016, at 8:19 PM, Phil Budne
> On Oct 3, 2016, at 8:19 PM, Phil Budne wrote:
>
> I have an ancient Unix system made by ProComp in Switzerland that has a
> 68000 CPU, 4 MB RAM and that 68451 MMU. Unfortunately, I didn't get a hard
> disk
> or system media for this oldtimer :( It ran a port of 7th
A quick google search found:
https://groups.google.com/d/msg/comp.os.linux.m68k/-8iweTkxPNI/L2-hPrW_ryAJ
mentions:
I have an ancient Unix system made by ProComp in Switzerland that has a
68000 CPU, 4 MB RAM and that 68451 MMU. Unfortunately, I didn't get a hard disk
or system media for this
Did Unisoft distribution tapes normally include sources?
m
- Original Message -
From: "Al Kossow" <a...@bitsavers.org>
To: <cctalk@classiccmp.org>
Sent: Monday, October 03, 2016 10:21 PM
Subject: Re: mc68010+mc68451 Unix source?
> the will probably be 68000
the will probably be 68000
unisoft kernels i've used weren't 010 with the 451
i'll have to dig around for what bits of the 451 kernel i still
have around. unisoft kept the mmu parts pretty well isolated since
the did so many hw ports
On 10/3/16 5:53 PM, Ken Seefried wrote:
> I've got a half
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