Article: 145 of comp.sys.cdc Reply-To: "Jim Stockard" From: "Jim Stockard" Newsgroups: comp.sys.cdc Subject: 7700 in Site Defense Program Lines: 39 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Message-ID: <17837.6840$446.9943186@ratbert.tds.net> Date: Thu, 12 Jul 2001 02:41:01 GMT NNTP-Posting-Host: 209.32.170.123 X-Complaints-To: abuse@uslink.net X-Trace: ratbert.tds.net 994905661 209.32.170.123 (Wed, 11 Jul 2001 21:41:01 CDT) NNTP-Posting-Date: Wed, 11 Jul 2001 21:41:01 CDT Organization: TDS.NET Internet Services www.tds.net Path: news.meer.net!sea-read.news.verio.net!dfw-artgen.news.verio.net!dfw-peer.news.verio.net!news.verio.net!newsfeed.mathworks.com!news.maxwell.syr.edu!jfk3-feed1.news.digex.net!ord2-feed1.news.digex.net!intermedia!newspeer2.tds.net!ratbert.tds.net!not-for-mail Xref: archive.mv.meer.net comp.sys.cdc:145 The original 7700 was delivered to the US Army in July 1974. It was for the Site Defense Program "SD" for short. This program IIRC was the follow-up to the Site Defense of Minuteman, as this program went out of vogue, or some such. We started the 7700 development for the Site Defense of Minuteman program, but it was completed at CDC for the Site Defense Program - for the same Army agency, and prime contractor. What the 7700 was used for later in life, I do not know. 7600's were built for a number of years. The development programs I was associated with at CDC were, IIRC the following: 1. The 7400 - designed in 1969, it was never built 2. Transfer of production of 7600's from Chippewa to ARHOPS in 1970, 71. 3. Design of a BDP functional unit for the 7600 - it was never built 4. 7700 Development - 1972-1974- shipped to US Army 7/74 5. SSM 7600 (replacing small core memory with bi-polar RAMS) released to manufacturing 11/74. 6. LCME 7600 (replacing Large Core Memory with a larger core memory) Shipped to NSA 3/76 7. Development of the Cyber 176, which was a 7600 with Cyber 170 PPS including SSM and LCME - first shipment 10/77. The 7600 or derivatives were replaced with the CYBER 990, which we shipped to Combustion Engineering in August 1985. IIRC, 7600 or CYBER 176 shipments had all but dried up by then. Not sure what this adds to the discussion, but may be interesting for any historians. Jim Stockard jrs@spamcop.net Control Data Engineer/Engineering Manger from 1965 to 1992 -- Jim Stockard jrs@spamcop.net Article: 147 of comp.sys.cdc From: "Peter L. Montgomery" Newsgroups: comp.sys.cdc Subject: Re: 7700 in Site Defense Program Message-ID: Sender: pmontgom@cwi.nl Nntp-Posting-Host: medusa.cwi.nl Organization: CWI, Amsterdam References: <17837.6840$446.9943186@ratbert.tds.net> <9ijbt9$1jc$1@lewis.ucs.indiana.edu> Date: Thu, 12 Jul 2001 11:25:09 GMT Lines: 55 Path: news.meer.net!sea-read.news.verio.net!dfw-artgen.news.verio.net!dfw-peer.news.verio.net!news.verio.net!newsfeed.mathworks.com!news.maxwell.syr.edu!surfnet.nl!cwi.nl!not-for-mail Xref: archive.mv.meer.net comp.sys.cdc:147 In article <9ijbt9$1jc$1@lewis.ucs.indiana.edu> greg@lewis.ucs.indiana.edu (Gregory Travis) writes: >One thing I've never understood is why the 7600 had only 64K of >small core memory. Am I missing something, or was SCM in the >7600 like SCM in the 6600 - i.e. it was the only memory out of which >one could execute a program directly. > >I had some programs on the 6600 that used more than 64K. I wouldn't have >been able to run them on a 7600 without using overlays and copying in datasets >to/from ECS, right? > >greg >-- >Gregory Travis >Advanced Network Management Lab (ANML) >812-855-5091 >gtravis@indiana.edu The 7600 at the ARC in Huntsville, Alabama had 200000 octal = 2^16 words of SCM, each 60 bits. The operating system (including the job supervisor) occupied the upper 20000 = 2^13 words (and some low memory was dedicated to PP (peripheral processor) buffers). Yes, programs could execute only out of SCM, and overlays were common. [The loader also supported segmentation, which is similar to today's virtual memory except that you needed to partition your program at load time, but most ARC users preferred the explicit loads overlays give.] LCM (large core memory) was 1750000 octal = 512000 decimal words at the ARC. About 30% of this was used for copies of frequently-used operating system overlays, such as record manager codes for common file types. A big difference between LCM on the 7600 and ECS on 6000 series machines is that the 7600 included RXi Xj and WXi Xj instructions to read and write single words of LCM, not just the block transfer instructions. NOS/BE had a deadstart option to boot without ECS, but SCOPE 2 required LCM, The LCM block copies were limited to 1023 words at a time, if I recall correctly, whereas ECS block copies could be as long as your field length (i.e., memory size) allowed. Most system routines (e.g., FORTRAN library routines) supported SCM or LCM arguments. Third-party libraries (e.g., IMSL routines, Calcomp plot routines) rarely supported LCM arguments. The sign bit of the 60-bit address distinguished the type of the actual argument. Our 7600 did not have a CMU (Compare Move Unit). When I heard around 1974 that the new Cray I supported 1 million 64-bit words, I thought that was huge. How wrong I was :-) -- The 21st century is starting after 20 centuries complete, but we say someone is age 21 after 21 years (plus fetus-hood) complete. Peter-Lawrence.Montgomery@cwi.nl Home: San Rafael, California Microsoft Research and CWI Article: 150 of comp.sys.cdc Reply-To: "Jim Stockard" From: "Jim Stockard" Newsgroups: comp.sys.cdc References: <17837.6840$446.9943186@ratbert.tds.net> <3b4dc971_2@news.iglou.com> Subject: Re: 7700 in Site Defense Program Lines: 61 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Message-ID: Date: Thu, 12 Jul 2001 17:34:01 GMT NNTP-Posting-Host: 209.32.170.163 X-Complaints-To: abuse@uslink.net X-Trace: ratbert.tds.net 994959241 209.32.170.163 (Thu, 12 Jul 2001 12:34:01 CDT) NNTP-Posting-Date: Thu, 12 Jul 2001 12:34:01 CDT Organization: TDS.NET Internet Services www.tds.net Path: news.meer.net!sea-read.news.verio.net!dfw-artgen.news.verio.net!dfw-peer.news.verio.net!news.verio.net!stl-feed.news.verio.net!news.cc.ukans.edu!newsxfer.eecs.umich.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!jfk3-feed1.news.digex.net!dca6-feed2.news.digex.net!intermedia!newsfeed1.cidera.com!newspeer2.tds.net!ratbert.tds.net!not-for-mail Xref: archive.mv.meer.net comp.sys.cdc:150 "Douglas H. Quebbeman" wrote in message news:3b4dc971_2@news.iglou.com... > "Jim Stockard" wrote in message > news:17837.6840$446.9943186@ratbert.tds.net... > > 7600's were built for a number of years. The development programs I was > > associated with at CDC were, IIRC the following: > > 1. The 7400 - designed in 1969, it was never built > > 2. Transfer of production of 7600's from Chippewa to ARHOPS in 1970, 71. > > 3. Design of a BDP functional unit for the 7600 - it was never built > > Ok, I give- what was a BDP functional unit? Boolean Data Processing? No, BDP was Business Data Processing. It would have been similar to the 6000 Compare Move Unit (CMU), but it had a few more instructions. I don't recall them at this time. > > > 4. 7700 Development - 1972-1974- shipped to US Army 7/74 > > 5. SSM 7600 (replacing small core memory with bi-polar RAMS) released to > > manufacturing 11/74. > > 6. LCME 7600 (replacing Large Core Memory with a larger core memory) > Shipped > > to NSA 3/76 > > 7. Development of the Cyber 176, which was a 7600 with Cyber 170 PPS > > including SSM and LCME - first shipment 10/77. > > Did the 7600 PPs execute the same instruction set as those in the > 6000, 70, and 170 series machines? And do I understand correctly > that the 7600 PPs were true processors, in other words, no barrel- > and-slot? The 7600 had seperate PP's, they were standalone processors. A system could have from 1 to 12 of them. The MCU was a dedicated PP, which controlled the system. There was room for PP 13, which was supposed to be a Real Time PP. I do not recall ever hearing of a system which had one in. With the Cyber 176, we added a 170PPS, which was 2x 6000 PP's in a seperate box, and come in thru the I/O Mux. So a C176 had both 170PPs and 7600 PPs. On these systems, the 7600 PPs were usually dedicated to the disks. 2 PPs would ping-pong reading the 2 head parrallel hydra disk. > > Regards, > -doug q > > -- > Excise the Pig-Latin from my e-mail address in order to reply... > > No Tourbots > > > > -- As I am at an internet connection only sporadically, and the news feed I use has only the last 5 days, If you have any hardware Q's you want to ask, send an email also. Jim Stockard jrs@spamcop.net