john.archie.mck...@gmail.com (John McKown) writes: > I used keypunches in college. I then graduated to a hardcopy terminal, but > not a KSR-33 or ASR-33. The school had some really nice DECWriters for the > non-IBM DEC System 20. And 2741s for the IBM. I adored the 2741s, which > were basically an IBM Selectric typewriter with a serial interface. In > college, we didn't use TSO. We used Wylber. It as actually a very nice > system. Especially compared to punching cards (which often required > punching out some other student who was keying in their program as they > were developing it) and looking a paper output. > > I actually did use an ASR-33 (KSR-33 with paper tape attachment) at TCU > (Texas Christian University in Ft. Worth, TX) connected to some other > computer in my senior high school year. Now that was a literal pain to key > with. Talk about "hitting" the keys. That monster had very stiff keys and a > long stroke to activate them.
lots of univ. were convinced to order 360/67 for running tss/360 ... but with tss/360 having horrible performance and not quite coming to production level ... many were just used as 360/65 for running os/360. However, a couple places wrote their own virtual memory operating systems, stanford did Orvyl ... as well as Wylber (later ported to os/360) and univ. of michigan did MTS ... which was later ported to 370 and saw some use at a number of univ. science center had assumed they would get virtual memory effort ... but lost out to the new tss/360 group. however, the science center did get 360/40 and did their own hardware modifications and producing (virtual machine) cp40/cms ... which morphed into cp67/cms when 360/67 became available. past posts mentioning science center http://www.garlic.com/~lynn/subtopic.html#545tech IBM recently shared this on Facebook ... which gets into tracing cloud computing back to the virtualization work at the science center blog.softlayer.com/2013/virtual-magic-the-cloud/ ... I reshared and also posted to (linkedin) "Old Geeks" that got some more comments http://lnkd.in/MbiakK Mike then reshared on facebook and generated a lot more comments ... some of mine archived here http://www.garlic.com/~lynn/2013l.html#18 http://www.garlic.com/~lynn/2013l.html#19 the science center installed cp67/cms at the univ last week jan1968 ... and I got to play with it on weekends. cp67/cms had support for 2741 and 1052 terminals ... including dynamic terminal type identification. the univ. had some number of tty/33 terminals and I added tty/ascii support ... including extending dynamic terminal type identification to include tty. I had wanted to extend this to have a single dialup phone number with common pool of number/ports for all terminals ("hunt group") ... however, there was a deficiency in the ibm terminal controller ... while it was possible to dynamically associate the type of line-scanner with any port ... it wasn't possible to change a ports line-speed (2741 & 1052 operated at same line-speed, but tty/33 was different line-speed). this somewhat was behind the univ. deciding to start clone controller effort ... starting with interdata/3 minicomputer ... reverse engineer the 360 channel interface and build a board for the interdata/3 and program the interdate/3 to emulate ibm terminal controller ... but supporting both changing line-scanner on each port as well as dynamic line speed identification. four of us get written up as responsible for (some part of) clone controller business. some past posts http://www.garlic.com/~lynn/subtopic.html#360pcm it morphed into an interdata/4 handling the channel interface with cluster of interdata/3 for line scanner function ... which interdata marketed as product. It continued to be marketed after interdata was bought under the Perkin-Elmer logo. I ran into one about a decade ago in large financial transaction datacenter handling much of the retail point-of-sale card swipe dial-up terminals on the east coast. I also hacked HASP and added 2741 & TTY terminal support ... and implemented an editor with the CMS editor syntax (completely different code since the programming environments are so different) ... which I considered much better than TSO (circa os/360 MVT 18). for other drift ... the rise of clone controllers is credited as the major motification behind the (failed) future system effort ... some past posts http://www.garlic.com/~lynn/submain.html#futuresys -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
