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| From | koehler@eisner.nospam.encompasserve.org (Bob Koehler) |
|---|---|
| Newsgroups | alt.sys.pdp11, comp.sys.dec, comp.os.vms |
| Subject | Re: QBUS Prototyping |
| Message-ID | <A$4TJa9Ngfq2@eisner.encompasserve.org> (permalink) |
| Date | 2011-04-18 08:00 -0500 |
| References | <8265dgFs33U3@mid.individual.net> <hps7i9$htt$1@naig.caltech.edu> <hr2d9r$lv$1@Iltempo.Update.UU.SE> <FgC+HafqKJY6@eisner.encompasserve.org> |
| Organization | Encompasserve |
Cross-posted to 3 groups.
In article <FgC+HafqKJY6@eisner.encompasserve.org>, koehler@eisner.nospam.encompasserve.org (Bob Koehler) writes: > > I never had a PDP-11 with less than 18 bit address space. > Instructions could only access 16 bits of it at a time, but the > hardware was there to make use of the rest of it. Maybe you didn't, but many of us did. And on PDP-11 with 18 bit UNIBUS, we had some systems which were limitted to 16 bit RAM. (By design, not by purchase). No APRs, no need for them.
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Re: QBUS Prototyping koehler@eisner.nospam.encompasserve.org (Bob Koehler) - 2011-04-18 08:00 -0500 Re: QBUS Prototyping Johnny Billquist <bqt@softjar.se> - 2011-04-18 08:06 -0700
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