From: "George R. Gonzalez" Newsgroups: alt.folklore.computers Subject: VT terminals, CPU's? Date: Fri, 19 Jul 2002 09:33:30 -0500 Organization: University of Minnesota, Twin Cities Campus Lines: 23 Message-ID: Reply-To: "George R. Gonzalez" X-Trace: laurel.tc.umn.edu 1027089417 14326 160.94.124.25 (19 Jul 2002 14:36:57 GMT) X-Complaints-To: usenet@laurel.tc.umn.edu X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!news.imp.ch!news.imp.ch!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!logbridge.uoregon.edu!hardy.tc.umn.edu!laurel.tc.umn.edu!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:112492 Waay back in the dim past I recall looking at an official VT-52 print set, and a VT-100 print set too. Now it may just be brain-fade, it was over 15 yrs ago, but IIRC marveling that DEC built a little micro-processor out of MSI chips just for the VT-52, and a different one for the VT-100. Some recent posters have firmly stated that the VT-100 had a Intel 8080. Now I'm confused. Can't sleep nights. It could be the huge amount of coffee I ingest, or it could be this discrepancy running around my subconcious. I can't lower my coffee intake without getting headaches, so can anybody explain these discrepancies? Regards, George ###### From: "Michael N. LeVine" Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? Date: Fri, 19 Jul 2002 08:07:14 -0700 Organization: Posted via Supernews, http://www.supernews.com Message-ID: References: User-Agent: MT-NewsWatcher/3.1 (PPC) X-Complaints-To: newsabuse@supernews.com Lines: 37 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!newscore.univie.ac.at!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.stanford.edu!sn-xit-05!sn-xit-01!sn-post-02!sn-post-01!supernews.com!corp.supernews.com!mlevine Xref: chonsp.franklin.ch alt.folklore.computers:112532 In article , "George R. Gonzalez" wrote: > Waay back in the dim past I recall looking at an official VT-52 print set, > and a VT-100 print set too. Now it may just be brain-fade, it was over 15 > yrs ago, but IIRC marveling that DEC built a little micro-processor out of > MSI chips just for the VT-52, and a different one for the VT-100. > > Some recent posters have firmly stated that the VT-100 had a Intel 8080. > > Now I'm confused. Can't sleep nights. It could be the huge amount of > coffee I ingest, or it could be this discrepancy running around my > subconcious. > > I can't lower my coffee intake without getting headaches, so can anybody > explain these discrepancies? > > > Regards, > > > George > > > > IIRC the VT-78 had a CMOS-8 cpu (PDP-8) to make it an intelligent terminal. Also DEC, in one or more of its abortive attempts to get into the personal PC market, produced modified VT1xx's with LSI-11's built in. -- Michael LeVine - mlevine@redshift.com "Thirty days hath September, April, June and November. All the rest have thirty one except for Gypsy Rose Lee and every one knew what she had" - Mel Blanc ###### From: Howard S Shubs Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? Date: Fri, 19 Jul 2002 22:22:58 -0400 Organization: ='SEQUENTIAL' Lines: 12 Message-ID: References: NNTP-Posting-Host: p-379.newsdawg.com User-Agent: MT-NewsWatcher/3.2 (PPC Mac OS X) Mail-Copies-To: never X-Face: "S"r{U%bs].&Ud}Pc~~~0a]M:t5l>>EN\1Faw10M9NK1Xq59wo7-"s0S+[{etQorO /Nf-Ci"i9v'MT!R8)J]N[4|2&x1r^Iq&{SB"6dknr0=+6UFb.>+{zMn_1=rw&/V+"d@* ZS5\LoW_ Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!news.imp.ch!news.imp.ch!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!pln-e!spln!dex!extra.newsguy.com!newsp.newsguy.com!howard Xref: chonsp.franklin.ch alt.folklore.computers:112525 In article , "George R. Gonzalez" wrote: > Some recent posters have firmly stated that the VT-100 had a Intel 8080. It did, running as an embedded processor. The VT220 used an 8051 IIRC. I forget what I found in the 320 and 420. -- "Run in circles, scream and shout!" I hope you have good backups! "Is this the right place for an argument?" ###### From: Jim Thomas Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? Date: 19 Jul 2002 17:05:06 -1000 Organization: Canada France Hawai`i Telescope Lines: 14 Message-ID: References: NNTP-Posting-Host: atlas.cfht.hawaii.edu X-Trace: news.hawaii.edu 1027134306 709 128.171.80.135 (20 Jul 2002 03:05:06 GMT) X-Complaints-To: usenet@hawaii.edu NNTP-Posting-Date: 20 Jul 2002 03:05:06 GMT X-Newsreader: Gnus v5.7/Emacs 20.6 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!newscore.univie.ac.at!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!hammer.uoregon.edu!news.hawaii.edu!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:112519 >>>>> "Michael" == Michael N LeVine writes: Michael> IIRC the VT-78 had a CMOS-8 cpu (PDP-8) to make it an intelligent Michael> terminal. Rather a self-contained computer/word processor. Michael> Also DEC, in one or more of its abortive attempts to get into Michael> the personal PC market, produced modified VT1xx's with LSI-11's Michael> built in. ISTR the VT-103 well predated the "PC". Nothead ###### Message-ID: <3D3A070C.618346E8@ev1.net> From: Charles Richmond Reply-To: richmond@ev1.net Organization: Canine Computer Center X-Mailer: Mozilla 4.7C-CCK-MCD {C-UDP; EBM-APPLE} (Macintosh; I; PPC) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 16 NNTP-Posting-Host: 12.237.69.162 X-Complaints-To: abuse@attbi.com X-Trace: rwcrnsc53 1027205977 12.237.69.162 (Sat, 20 Jul 2002 22:59:37 GMT) NNTP-Posting-Date: Sat, 20 Jul 2002 22:59:37 GMT Date: Sat, 20 Jul 2002 22:59:37 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!newscore.univie.ac.at!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!wn1feed!wn3feed!worldnet.att.net!204.127.198.203!attbi_feed3!attbi.com!rwcrnsc53.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:112582 Howard S Shubs wrote: > > In article , > "George R. Gonzalez" wrote: > > > Some recent posters have firmly stated that the VT-100 had a Intel 8080. > > It did, running as an embedded processor. The VT220 used an 8051 IIRC. > I forget what I found in the 320 and 420. > The VT-420 had an 8048... -- +-------------------------------------------------------------+ | Charles and Francis Richmond | +-------------------------------------------------------------+ ###### From: Paul Williams Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? Date: Sun, 21 Jul 2002 08:40:57 -0000 Organization: http://vt100.net Message-ID: References: <3D3A070C.618346E8@ev1.net> User-Agent: Xnews/L5 X-Complaints-To: newsabuse@supernews.com Lines: 13 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!news-ge.switch.ch!newsfeed00.sul.t-online.de!t-online.de!nntp-relay.ihug.net!ihug.co.nz!logbridge.uoregon.edu!newsfeed.stanford.edu!sn-xit-05!sn-xit-06!sn-post-01!supernews.com!news.supernews.com!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:112576 Charles Richmond wrote in news:3D3A070C.618346E8@ev1.net: > Howard S Shubs wrote: > >> It did, running as an embedded processor. The VT220 used an 8051 >> IIRC. I forget what I found in the 320 and 420. >> > The VT-420 had an 8048... The VT220, VT320 and VT420 all used an 8051 (actually, the 8031, which has no internal ROM). I've just checked, and my 1992 VT420 has a Signetics part. ###### Message-ID: <3D3AC352.8D39D44E@ev1.net> From: Charles Richmond Reply-To: richmond@ev1.net Organization: Canine Computer Center X-Mailer: Mozilla 4.7C-CCK-MCD {C-UDP; EBM-APPLE} (Macintosh; I; PPC) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: alt.folklore.computers Subject: Re: VT terminals, CPU's? References: <3D3A070C.618346E8@ev1.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 24 NNTP-Posting-Host: 12.237.69.162 X-Complaints-To: abuse@attbi.com X-Trace: rwcrnsc52.ops.asp.att.net 1027254176 12.237.69.162 (Sun, 21 Jul 2002 12:22:56 GMT) NNTP-Posting-Date: Sun, 21 Jul 2002 12:22:56 GMT Date: Sun, 21 Jul 2002 12:22:56 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!news.imp.ch!news.imp.ch!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed.news2me.com!newsfeed2.earthlink.net!newsfeed.earthlink.net!wn4feed!worldnet.att.net!204.127.198.203!attbi_feed3!attbi.com!rwcrnsc52.ops.asp.att.net.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:112589 Paul Williams wrote: > > Charles Richmond wrote in > news:3D3A070C.618346E8@ev1.net: > > > Howard S Shubs wrote: > > > >> It did, running as an embedded processor. The VT220 used an 8051 > >> IIRC. I forget what I found in the 320 and 420. > >> > > The VT-420 had an 8048... > > The VT220, VT320 and VT420 all used an 8051 (actually, the 8031, which has > no internal ROM). I've just checked, and my 1992 VT420 has a Signetics > part. > The VT-420 I disassembled had an 8048...perhaps there are different revisions of the main board with different processors... -- +-------------------------------------------------------------+ | Charles and Francis Richmond | +-------------------------------------------------------------+