On 10 October 2016 at 10:21, Clem Cole <cl...@ccc.com> wrote: > > > Back to the question, the 4.1BSD release does support the 750 and > probably ran on more 750's then anything else but that may have been a > patch after the original release (I'd have to check my tapes). We did have > a lot of them at BSD and one -- thing the 750 has was a funky tape drive > that replaces the 780's floppies. I do remember work went into getting the > standalone system to deal with that tape system. Stretching my memory a > bit, the 730 may have used that same front end. But I think it was > similar, although slightly different so there were changes needed for that > also. > > I've forgotten now, Horton or Armando might remember better than I did, > but 4.1BSD >> might have later<< supported the 730 "out of the box"; but I > do not think so. Again - that would have been a much later tape and much > more likely a patch available on the BSD ftp site if it was available. > Frankly, I do not remember anyone that ran BSD on a 730 (I do not even > remember any of them at UCB but their could have been - I remember lots of > 780s and 750s). Basically, by the time DEC released 730 the 68K based > systems had already been available for about 2-3 years from the Masscomp, > Apollo, and eventually Sun. Those systems were faster and significantly > cheaper, hence the start of the UNIX migration to same. >
The 4.1BSD directory on the CSRG CD-ROM doesn't have any references to the 750 anywhere in /usr/src (or /usr for that matter). Those files are mostly dated November 1980. The /4.0.upgrade/sys directory does have support for the 750 and 730 (called "7ZZ"); those files are dated 1981 and early 1982. So it appears that the initial release of 4.1BSD did not support the 750, but a later patch did. -Henry
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