Article 4742 of alt.sys.pdp10: Path: nntp1.ba.best.com!inwap From: inwap@best.com (Joe Smith) Newsgroups: alt.sys.pdp10 Subject: Re: typical memory and harddisk configuration Date: Sun, 6 May 2001 10:18:21 +0000 (UTC) Organization: Chez Inwap Lines: 56 Message-ID: <9d38dd$15eb$1@nntp1.ba.best.com> References: <87snilysfi.fsf@frown.here> <988998093.994714@dns2.serv.net> <87g0ekz4lb.fsf@frown.here> <3AF46A42.D9486509@mail.bcpl.net> NNTP-Posting-Host: shell3.ba.best.com X-Trace: nntp1.ba.best.com 989144301 38347 206.184.139.134 (6 May 2001 10:18:21 GMT) X-Complaints-To: abuse@best.com NNTP-Posting-Date: Sun, 6 May 2001 10:18:21 +0000 (UTC) Xref: nntp1.ba.best.com alt.sys.pdp10:4742 In article <3AF46A42.D9486509@mail.bcpl.net>, Ken McMonigal wrote: >Friedrich Dominicus wrote: >> >> What were the memory and hardisk configurations options for a PDP-10 >> at the beginnnng (1967-1970). How many users were to be served with >> it? >> >> Regards >> Friedrich > >Perhaps I can supply one data point (one machine) & you can gather others >to determine ranges to get info you want. The KA at the Colorado School of Mines was similar to what Ken reported. This is from memory. >Configuration: > >KA processor >128K word core memory (MA-10 & MD-10) CSM had 192 K words of core (128 + 64). The TOPS-10 Monitor took up about 92 K, leaving 100 K for user jobs. Except for when accounting ran at night, CORMAX was 40 K (enough for 2 big jobs and some smaller ones in core at the same time). >storage devices - > >DF-10 memory channel (to RC-10 & RP-10) >RC-10 controller to RD-10 fixed head disk CSM did not have an RD; we had swap space on DSKA. >RP-10 disk pack controller (8 diskpacks) If I remember correctly, DSKA was a single RP02 and DSKB was two RP03s. >TD-10 Dectape controller (8 Dectape units) We had two: DTA0-DTA7 and DTB0-DTB7 >terminals - > >DA-10 interface/ PDP-8 >DC-10 dataline scanner We had a 680I emulating a DC68 for current-loop ASR33 teletypes >BA-10 printer controller / printer Our BA-10 also had a card reader, a card punch, and a Calcomp 3-pen plotter. Tape controller and tape drives (TU10 and TU20?, 7-track and 9-track). -Joe -- See http://www.inwap.com/ for PDP-10 and "ReBoot" pages. Article 4755 of alt.sys.pdp10: Path: nntp1.ba.best.com!inwap From: inwap@best.com (Joe Smith) Newsgroups: alt.sys.pdp10 Subject: Re: comm front ends, terminals (was Re: typical memory and harddisk configuration) Date: Tue, 8 May 2001 06:01:30 +0000 (UTC) Organization: Chez Inwap Lines: 52 Message-ID: <9d823q$1r2o$1@nntp1.ba.best.com> References: <87snilysfi.fsf@frown.here> <3AF46A42.D9486509@mail.bcpl.net> <9d38dd$15eb$1@nntp1.ba.best.com> NNTP-Posting-Host: shell3.ba.best.com X-Trace: nntp1.ba.best.com 989301690 60504 206.184.139.134 (8 May 2001 06:01:30 GMT) X-Complaints-To: abuse@best.com NNTP-Posting-Date: Tue, 8 May 2001 06:01:30 +0000 (UTC) Xref: nntp1.ba.best.com alt.sys.pdp10:4755 In article , Eric Smith wrote: >inwap@best.com (Joe Smith) writes: >> We had a 680I emulating a DC68 for current-loop ASR33 teletypes > >I'm curious about this, since I've heard of both but don't know the >features or the differences between them. Is the 680I the one that is >PDP-8/I based? What's in a DC68? They're both PDP-8 based. The 680I was manufactured by a third party company, the DC68 was nearly the same thing with DEC's badge on it >Did CSM have a lot of current-loop ASR33s? The KA-10 had current-loop almost exclusively driving ASR33s. 6 in top floor of the Green Center (Computing Center) 2 in Hill Hall (Math) 3 in Alderson Hall (Petroleum Engineering); 1 on each floor 3 in Meyer Hall (Physics); 1 on each floor 1 in Chauvenet Hall (Mining) 1 in Stratton Hall (Earth Sciences) 3 in Hill Hall (Metallurgy); 1 on each floor some number in Guggenheim (Administration). I forget now how the high-speed graphics terminals (1 each of ARDS and Tektronix 4010) were connected to the KA. They may have had current-loop to RS232 converters, running at 1200 baud. All the ASR33's got replaced with LA36 hardcopy terminals one year. (Wow, 300 baud! Three times faster than than 110!!) The ADM3's arrived around 1977. The "glass teletype" had the cursor fixed on the bottom line; like a teletype the text could only scroll up. > When I used their system >it seemed like most of the printing terminals were LA36 DECwriters; I'm >not sure if they were RS-232 or current loop. I don't recall what VDTs >were there early on, but I remember when they started getting Visual 200s >(or Visual somethings). Some of the ADM3's were upgraded to ADM3A (direct cursor addressing and lower case). New carrels were installed in the Computing Center with Visual-200 terminals. The guy who ran the Green Center had a Concept-100 in the basement. I had a VT100. The departements were able to choose their own terminals. The terminals were connected to a terminal multiplexor from DCA, which allowed connecting to either CRUNCH (the KL-1091) or MUNCH (the KS-2020). -Joe -- See http://www.inwap.com/ for PDP-10 and "ReBoot" pages.