I helped convert from a System 3 to a 4361 On Thu, Dec 27, 2018 at 10:21 PM Wayne Bickerdike <wayn...@gmail.com> wrote:
> Z80 was a processor. How could it possibly crop up in a discussion about > what constitutes a mainframe? > > The Altos 8000 was Z80 based as was the North Star Horizon and the Cromemco > System 3. I worked with these in the 70's to *escape* from the mainframe, > the demise of which was imminent. LOL. > > Anything you can carry to the boot (trunk) of your car cannot be a > mainframe:) > > On Fri, Dec 28, 2018 at 6:35 AM Seymour J Metz <sme...@gmu.edu> wrote: > > > > Well, ... the IBM 1401 was built in a substantial frame; > > > > Substantial? Look at Figure 1 in > > > http://bitsavers.org/pdf/ibm/1401/A24-1401-1_1401_System_Summary_Sep64.pdf > > . > > > > > it appears to have the only > > > > If a Z-80 had been the only computer mentioned, would you have called it > a > > mainframe? > > > > > Other members of the same general family like IBM 1410 were certainly > > regarded as a mainframe. > > > > > > The 7010 was certainly called a mainframe, and possibly the 1410, but > > never the 1440 or 1460. > > > > > With a recent MS in Comp Sci, I found myself in the U.S. Army 1969-1971 > > > (started in Infantry but ended up as head Company Clerk at HHC of "The > > > Old Guard" at Ft Myer VA). I remember reading some memo that came down > > > from above the Battalion suggesting the possibility of using a > > > punched-card-based system for maintaining and producing our Company > > > Roster. That might have involved an IBM 1401, > > > > More likely a UNIVAC 1005. > > > > -- > > Shmuel (Seymour J.) Metz > > http://mason.gmu.edu/~smetz3 > > > > ________________________________________ > > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf > > of Joel C. Ewing <jcew...@acm.org> > > Sent: Wednesday, December 26, 2018 11:56 PM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: How about a little Christmas fudge? | Computerworld Shark > tank > > > > Well, ... the IBM 1401 was built in a substantial frame; and in the > > context cited it appears to have the only (hence surely the "main") > > computer present. Other members of the same general family like IBM > > 1410 were certainly regarded as a mainframe. I'm pretty sure any > > computer large enough to require one or more dedicated frames was > > called a "mainframe" in those days. When mini-computers first came out, > > they weren't considered mainframes because they were typically only the > > size of a single rack and could even be carried. > > > > With a recent MS in Comp Sci, I found myself in the U.S. Army 1969-1971 > > (started in Infantry but ended up as head Company Clerk at HHC of "The > > Old Guard" at Ft Myer VA). I remember reading some memo that came down > > from above the Battalion suggesting the possibility of using a > > punched-card-based system for maintaining and producing our Company > > Roster. That might have involved an IBM 1401, but my impression at the > > time was that the functions they were describing could easily have been > > done with just unit-record equipment. Nothing ever came of it while I > > was there. It would have saved us the periodic tedium of one or more > > man-hours of manually typing up a new roster in which few names changed, > > but given that our time was cheap and available, there would have been > > no way to cost-justify using a process that would save our time but slow > > down the overall process by requiring outside resources. Clearly, at > > that time, punched card decks were one of the databases used for > > tracking military personnel. > > Joel C. Ewing > > > > On 12/26/18 2:42 PM, Seymour J Metz wrote: > > > What is he smoking? Since when was the 1401 a mainframe? > > > > > > > > > -- > > > Shmuel (Seymour J.) Metz > > > http://mason.gmu.edu/~smetz3 > > > > > > ________________________________________ > > > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on > > behalf of Mark Regan <marktre...@gmail.com> > > > Sent: Wednesday, December 26, 2018 8:28 AM > > > To: IBM-MAIN@LISTSERV.UA.EDU > > > Subject: How about a little Christmas fudge? | Computerworld Shark tank > > > > > > > > > https://secure-web.cisco.com/1iMlW_GZ2Scqioa5F4rqymcywO0OTBLBFOtYPuQZZF6F73Kv0x_B9nU3SOTiheXf32DsESHEBSvbzXuJ78Z2XaRKtXr7A2GITbjxnEDGjBqcDiOzF9WOIQCYJIH89nABmY7xso9DckpD3Q10YPvrxhvPVeFvR6IYMhBl0Po4k4-03fXnkJSammKYm3lrjMJyX4f-lcp9YlEt59dyzYTF_at6wT-i9VPdyfHx5DVlOyFFEzAQxZe-ifUcS7uOAE70lUB6w6ZfwDLRp9vhqQVEaCVSjXFSY0F4a2YhM92FII0XRqIAu4y7yW4Iop4TXQVM-iMQuqleDME3jgueepL3jXWQ797SaO4hRpNph47Gl9FOTKIqwIXeAe2DNqPGTQMlRexhctM6zHXZYT2EbywHPaw/https%3A%2F%2Fwww.computerworld.com%2Farticle%2F3330396%2Fapplication-development%2Fsituation-normal-all-fudged-up.html > > > > > > ... > > > > > > > -- > > Joel C. Ewing > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > > -- > Wayne V. Bickerdike > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- Scott Ford IDMWORKS z/OS Development ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
