Did you have the same fun and games I had with Southwestern Bell, during the 70s-80, as each time I got a faster modem, I was the first customer with that speed, and their engineers had to come out and measure which of my 6 lines was sufficiently quiet to be used, often having to change amplifiers up the line. I think 1200 was no problem, but I remember very well the 2400, 4800, 9600, and especially the 19.2 interations that took them several days to support.
In 1984 I was using the first Compaq LunchBox ($13000) with a Barr Systems SDLC card to talk SNA. Barry -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Anne & Lynn Wheeler Sent: Monday, September 09, 2013 10:14 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Teletypewriter Model 33 ba...@mxg.com (Barry Merrill) writes: > You have not lived until you have used a Texas Instruments Silent 700 > at 300 baud to watch a SAS PROC PLOT, when you can see each and every > dot being laid down, and definitely not left to right nor top to > bottom, and not speedily. That was my TSO access from home in 1976. re: http://www.garlic.com/~lynn/2013l.html#20 Teletypewriter Model 33 other trivia about clone controller ... int early tests data transferred to 360 memory was all garbage ... turned out we overlooked that ibm controller line-scanner convention was leading bit went into low-order bit position in byte ... reversing the order of bits in each byte ... with mainframe translate tables handling the ascii<->ebcdic bit reversed byte convention (had initially transferred straight ascii rather than bit reversed ascii). i got online 2741 at home starting in Mar1970 ... which was replaced with 300 baud CDI Miniterm the summer of 1977 (very similar to TI silent 700) http://www.old-computers.com/museum/computer.asp?st=1&c=636 old picture of desktop http://www.garlic.com/~lynn/miniterm2.jpg and http://www.garlic.com/~lynn/miniterm.jpg the above also shows compact microfiche veiwer and a company business tieline. there was a microfiche printer that standard output could be routed to and get a couple hr delivery. miniterm was followed by IBM 3101 "glass teletype" (initially 1200 baud) http://www.garlic.com/~lynn/3101a.jpg and http://www.garlic.com/~lynn/3101b.jpg before getting ibm/pc http://www.garlic.com/~lynn/homepc.jpg 3101 was code-named topaz before announce ... some old posts mentioning topaz http://www.garlic.com/~lynn/2006y.html#0 Why so little parallelism? http://www.garlic.com/~lynn/2007e.html#15 The Genealogy of the IBM PC http://www.garlic.com/~lynn/2007h.html#39 sizeof() was: The Perfect Computer - 36 bits? http://www.garlic.com/~lynn/2007k.html#40 DEC and news groups http://www.garlic.com/~lynn/2007t.html#74 What do YOU call the # sign? http://www.garlic.com/~lynn/2008m.html#37 Baudot code direct to computers? http://www.garlic.com/~lynn/2008m.html#51 Baudot code direct to computers? http://www.garlic.com/~lynn/2008s.html#22 IBM PC competitors http://www.garlic.com/~lynn/2009j.html#40 My "Green Screen" IBMLink is still working http://www.garlic.com/~lynn/2009j.html#66 A Complete History Of Mainframe Computing http://www.garlic.com/~lynn/2009s.html#0 tty http://www.garlic.com/~lynn/2010b.html#27 Happy DEC-10 Day http://www.garlic.com/~lynn/2011d.html#15 I actually miss working at IBM http://www.garlic.com/~lynn/2012m.html#27 Singer Cartons of Punch Cards http://www.garlic.com/~lynn/2013k.html#16 Unbuffered glass TTYs? http://www.garlic.com/~lynn/2013k.html#24 spacewar -- 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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
