Date: Sun, 2 Jun 1996 10:30:08 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: pechter@shell.monmouth.com (Bill/Carolyn Pechter) Cc: terry@lambert.org, freebsd-chat@freefall.FreeBSD.org Subject: Re: vt131 Message-ID: <199606021730.KAA23495@phaeton.artisoft.com> In-Reply-To: <199606020309.XAA28108@shell.monmouth.com> from "Bill/Carolyn Pechter" at Jun 1, 96 11:09:28 pm
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> > > Bill > > > ex-DEC Field Circus > > > Vax and VT100 board shuffler... > > > > uh... 12 lines. > > Terry -- are you sure it wasn't 14... 14x132 under EDT is burned in my > brain... the docs are in the Crawl Space -- should I take a look or isn't > it worth the bother? probably not worth the bother. I remember that it was half the number of lines (24/2). I guess 80 x 24 / 132 = 14.54, so they had enough memory for 14. I can dig out my manual (which isn't in a crawlspace 8-)) if you want. For some reason, I think they didn't do 14 because of the bank break-down. It could be I'm remembering the VT102 boards they put in the DEC Rainbow 100's... > The VT131 was a VT102 with block mode... The VT102 was a VT100 with > Printer Port and AVO -- but the VT101/VT102 used a different board set and > microcode and had a major number of very UGLY bugs in cursor speed until > the later rom revisions (and I think some VMS EDT workarounds to avoid > hitting some of these). The Real VT101/102 was a cost reduced > one board item instead of the VT100+AVO). The VT101/102 had a smaller power > supply and couldn't handle the Q-BUS backplane or VT180 Z80 CPU > which made them VT103(Q-BUS) or VT180 (CP/M). I've got both of them here. 8-). Feels like "old home week"... > There was also the PDT11/110 and 11/130 which fitted an LSI-11 chipset > in a VT100 making for a kind of workstation running RT11. The 11/130 used > TU58 DECtape. The 110 was downloaded over the serial line. We had one of those donated to WSU -- we ran RSX on it (my memory is now fuzzy 8-)). > There may have been a VT130 -- but I don't remember. Could it have been > one of those wierd Newspaper Composition/Editing Tubes like the VT78 > based stuff. The difference was 131 did block mode. 8-). > Actually, if you want WIERD -- there was the multidrop DDCMP VT62 (a 52 > with wierd DECnet support and a Reverse Video command and BLOCK MODE > designed for a transaction processing system called TRAX (which died or > mutated and became RSX-11M+). Ah, DDCMP. 8-). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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