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Ip=[14.136.113.162]; Helo=[exchange.superglobalmegacorp.local] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: HK2PR02MB3828 Subject: Re: [TUHS] a possible source for 4.1BSD tapes X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" ------=_Part_6683_2130286933.1552372344374 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit I would also add that 4.1 also ties into research UNIX v8. On the VAX (via SIMH) its bootstrapped from a 4.1 system. David du Colombier's guide uses the 4.1 image I found and modified with some 4.2 to get running on SIMH http://9legacy.org/9legacy/doc/simh/v8 Not having 4.1 would have made this far more involved. 4.2 is no doubt a major Internet milestone on the way to SunOS & 4.3 while 4.0/4.1 are important in a pre-tcpip focused world. Naturally I'm biased into thinking they are all important, but I know resources /time are limited. On Tue, Mar 12, 2019 at 2:22 PM +0800, "Nigel Williams" wrote: On Tue, Mar 12, 2019 at 4:39 AM Larry McVoy wrote: > Other than for history's sake, I don't see the value of 4.1 On the history side, I found having 4.1 BSD important when we were recovering the build of a programming language on this version. As we had the binary we wanted to be sure that when we re-compiled we could confirm that the result was identical to the original. This was to ensure that we had recovered the build environment as it was originally. For that reason, I would urge preservationists to always try to recover as many incremental versions as possible. ------=_Part_6683_2130286933.1552372344374 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
I would also add that 4.1 also ties into research UNIX v8.

On the VAX (via SIMH) its bootstrapped from a 4.1 system.

David du Colombier's guide uses the 4.1 image I found and modified with some 4.2 to get running on SIMH

Not having 4.1 would have made this far more involved. 4.2 is no doubt a major Internet milestone on the way to SunOS & 4.3 while 4.0/4.1 are important in a pre-tcpip focused world.

Naturally I'm biased into thinking they are all important, but I know resources /time are limited.



On Tue, Mar 12, 2019 at 2:22 PM +0800, "Nigel Williams" <nw@retrocomputingtasmania.com> wrote:

On Tue, Mar 12, 2019 at 4:39 AM Larry McVoy  wrote:
> Other than for history's sake, I don't see the value of 4.1

On the history side, I found having 4.1 BSD important when we were
recovering the build of a programming language on this version. As we
had the binary we wanted to be sure that when we re-compiled we could
confirm that the result was identical to the original. This was to
ensure that we had recovered the build environment as it was
originally. For that reason, I would urge preservationists to always
try to recover as many incremental versions as possible.
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