[email protected] (Anne & Lynn Wheeler) writes: > With regard to ACS (IBM's advance computing effort) by Amdahl ... this > has account of many of the features ... but was killed off by IBM > management because they were worried it would advance computing > state-of-the-art too fast and they would loose control of the market. > http://people.cs.clemson.edu/~mark/acs_end.html > > Amdahl leaves sorthly after ACS was killed to start his own clone > computer computing. The ACS "end" article lists several ACS features > that don't show up in IBM processors until es/9000 over 20yrs later.
re: http://www.garlic.com/~lynn/2014d.html#21 Write Inhibit "The rise and fall of IBM" references that a major motivation for Future System effort was countermeasure for clone controlleres http://www.ecole.org/en/seances/CM07 past posts mentioning Future System effort ... including 370 efforts being killed off and/or suspended http://www.garlic.com/~lynn/submain.html#futuresys other references to Future System http://www.jfsowa.com/computer/ http://people.cs.clemson.edu/~mark/fs.html http://en.wikipedia.org/wiki/IBM_Future_Systems_project >From Ferguson/Morris Computer Wars (effect of Future System failure): ... and perhaps most damaging, the old culture under Watson Snr and Jr of free and vigorous debate was replaced with sycophancy and make no waves under Opel and Akers. It's claimed that thereafter, IBM lived in the shadow of defeat ... and: But because of the heavy investment of face by the top management, F/S took years to kill, although its wrongheadedness was obvious from the very outset. "For the first time, during F/S, outspoken criticism became politically dangerous," recalls a former top executive. ... snip ... discusses in the failure of FS, there was Q&D efforts to create 3033 & 3081 ... even though they weren't very competitive with clone processors http://www.jfsowa.com/computer/memo125.htm also the lack of 370 products during the FS period was credited with giving clone processors market foothold. one of the things I worked on as undergraduate in the 60s was clone controller. CP67 was delivered to the univ. in Jan1968 with 1052 and 2741 terminal support ... including support for doing dynamic terminal identification and dynamically switching the terminal controller line-scanner type. the univ. had some number of tty/ascii support, so I added tty/ascii support in a way that was consistant with doing dynamic terminal identification (and dynamic line-scanner switching). what I really wanted to do was have a dialup "hunt group" with a single number for all incoming terminal types ... using a common pool of controller ports. the problem was that while it was possible to dynamically change line-scanner type for each port, the IBM controller took a short cut and hard-wired each port's line-speed. The univ. then kicked off a clone controller project, with objectives including being able to do both dynamic terminal type and dynamic line speed. The channel interface was reverse engineered and a channel board built for an Interdata/3 programmed to emulate IBM controller. Later this was enhanced to be an Interdata/4 handling the channel interface, and cluster of multiple Interdata/3s handling port interfaces ... and Interdata is selling it ... after Perkin/Elmer buys Interdata it continues to be sold under the P/E logo. Four of us get written up for (some part of) clone controller business. some past posts http://www.garlic.com/~lynn/subtopic.html#360pcm other recent posts http://www.garlic.com/~lynn/2014c.html#97 IBM ACS http://www.garlic.com/~lynn/2014c.html#104 IBM ACS http://www.garlic.com/~lynn/2014d.html#16 [OT ] Mainframe memories http://www.garlic.com/~lynn/2014d.html#17 Write Inhibit http://www.garlic.com/~lynn/2014d.html#18 IBM ACS http://www.garlic.com/~lynn/2014d.html#19 Write Inhibit http://www.garlic.com/~lynn/2014d.html#20 Write Inhibit http://www.garlic.com/~lynn/2014d.html#22 [OT ] Mainframe memories http://www.garlic.com/~lynn/2014d.html#23 [OT ] Mainframe memories http://www.garlic.com/~lynn/2014d.html#24 IBM ACS http://www.garlic.com/~lynn/2014d.html#25 [OT ] Mainframe memories http://www.garlic.com/~lynn/2014d.html#26 [OT ] Mainframe memories http://www.garlic.com/~lynn/2014d.html#27 [OT ] Mainframe memories -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
