Apr 30, 2008
Yeah, I remember those. (Nov 23, 2015 | post #25297)
Oh? Do they need more storage space for the bullshit? (Nov 20, 2015 | post #25174)
Depends on your definition. I worked on the Wang 2200 PCS in the mid to late 70s as one of their field engineers. http://www.gaby.de /wang02.jpg If you mean IBM-type, I got one in 1983 though I worked with several micro-computers well before that including Apple, Atari, TI, etc. (Nov 20, 2015 | post #25173)
According to the guys involved, the ModComp came later. The TMI system was a Bailey 855 built by Bailey Meter Company not by Modular Computers. (Nov 20, 2015 | post #25171)
You being our resident expert on nonsense? (Nov 20, 2015 | post #3986)
And thanks for the vote of confidence. (Nov 20, 2015 | post #3985)
Sarcasm? Who, me? I'll be around. Just not sure how often at this pointTime will tell, won't it? (Nov 20, 2015 | post #3984)
Oh, geez. And Ballard was talking about a local flood. Not a global one. (Nov 19, 2015 | post #191627)
From: http://www.cringel y.com/2009/03/31/t hree-mile-island-m emories/ Tom Willmott April 4, 2009 at 10:22 am I was a co-designer (ca. 1965) of the computer (855) to which Cringley refers. I was appalled to later learn that it was in use at TMI. Although we were proud of our work, it was clunky in 65 and obsolete a decade later. But it was extremely difficult to get new computers approved by the NRC, and so naive designs continued to be used by the engineers who designed reactor controls. All of this continues today. Take a look at our air traffic control systems, which is more scary than TMI. But Cringely is amiss when he indicates that the only indication was printer output. There were lots of indicator lights and meters on the panels. Also, no one seems to have mentioned a key event that, early on in the accident, when the pump monitors indicated wildly fluctuating amps, the operators overrode the automatic shutdown (scram). Had that intervention not occurred, the plant would have come down safely. But I do agree there was a lack of training. As I understood it, the operators were trying to avoid criticism by management (for wrecking the feed pumps), and were not thinking about the public safety risks. And lastly, it was reported the 855 kept on chugging for days, even though it was hours behind, and it no longer mattered! https://groups.yah oo.com/neo/groups/ regsaudioforum/con versations/message s/26210 From: Tip Johnson <Tip_Johnson@.. .> To: regsaudioforum@yah oogroups.com Sent: Wednesday, 11 February, 2009 6:31:36 Subject: RE: [regsaudioforum] Re: Copland DRC205 problems Hi Fred, At my high school we had a teletype (TTY) machine with paper-tape and a time-share connection via a telephone handset modem. At Purdue we had the 1503s and a CDC 6500 and submitted programs on punch cards. But I got to use a PDP8 in my interactive graphics class (first time I actually got to touch a computer). My employer after college was the Bailey Meter Company, which had designed it's own computer, the Bailey 855 -- vacuum tubes, drum memory, and 25-bit words. It was the only computer certified by the NRC for nuclear power plants and was at Three Mile Island when the China Syndrome almost occurred. (BTW, nuclear power plants are manually controlled and are not allowed to be controlled by computer, so you don't have to worry about what you see on the TV show "24". And we certainly didn't use Windows!) Then the Bailey 1055 system used MODCOMP IVs with a whopping 64K of core memory. Those were great times -- toggling in the boot loader via the front panel switches to load the OS from paper-tape. The first uP I programmed was the Texas Instruments 9900. So it seems that the computer system at TMI was a Bailey 855 built on a ModComp IV (which looks very similar to DEC PDP computers). https://qph.is.quo racdn.net/main-qim g-c3fcf9edc6d13bcd c8b74399860534a1?c onvert_to_webp=tru e Can't really blame ModComp for the applications Bailey Meter Company put on its processors. (Nov 19, 2015 | post #25123)
That seems to be the case these days though Chimney once asked me how it was that I was on here all the time. Schedules changeNot my intention but my attendance here may be more uneven. Why? You gonna miss me? ;-) (Nov 19, 2015 | post #3888)
Chimney is no more an atheist than I am. And given some of your recent comments, you should take more care in directing "cheaply " at another. (Nov 19, 2015 | post #3880)
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