A PDP-8? Brings back awful memories of tons of hours I spent wire wrapping in 1971! We were going to computerize a rotogravure printing press. But then the company ran out of money and couldn't afford shielded wire and actually ran all of the signal wires in the same wireway as the 50 Hp motor power etc. if you can imagine such a thing! The job didn't last long but I'll tell you I learned a lot about noise in signal runs! So when I first started planning on where to put the 5000A no one had to tell me to order plenty of common mode chokes and take care of ground connections! And try to keep in mind that I'm a chemist, not an EE.
73 Lee K9WRU ----- Original Message ----- From: "K6JEK" <[EMAIL PROTECTED]> To: "FlexRadio Reflector" <FlexRadio@flex-radio.biz> Sent: Wednesday, August 20, 2008 1:39 AM Subject: Re: [Flexradio] [OT] Mac mini as PowerSDR machine > Looks like a bunch of us old computer geezers are Flex users. > > Anyway fellow computer geezers, if you get out to my neck of the > woods, Silicon Valley, visit the Computer History Museum. It has a > lot of that good old stuff and some of it is running. They have a > Cray 1. If they'd fire it up, maybe we could get a chunk of the > Flex software running on it. Wouldn't that be a kick? > > Jon > > On Aug 18, 2008, at 9:34 AM, <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> > wrote: > > > Brings back memmories... > > Still love VMS and alpha processors as well, > > dit a lot of wirewrapping on PDP8. lots > > of external harware processing. > > It is not allways the bests that win....... > > (own a "strait 8"(don't dare to switch in on), LSI11 and a desctop > > VAX) > > 73 peter pa0pvn > > > > groeten Peter website http://www.homepages.hetnet.nl/ > > ~petervn/ <https://netmail.hetnet.nl/exchweb/bin/redir.asp? > > URL=http://www.homepages.hetnet.nl/~petervn/> > > petervn-at-hetnet-nl pa0pvn-at-hetnet-nl pa0pvn-at-amsat-org > > only large files: pa0pvn-at-gmail-com > > There are 10 kind of people, those who can count to 1010 on their > > fingers, > > and those who count to 1111111111. > > > > > > ________________________________ > > > > Van: [EMAIL PROTECTED] namens Mike Naruta > > Verzonden: ma 18-8-2008 15:24 > > Aan: Brian Lloyd; FlexRadio > > Onderwerp: Re: [Flexradio] [OT] Mac mini as PowerSDR machine > > > > > > > > Wow, RSX-11M? I haven't used that in a > > quarter-century. Gary Unruh and I wrote > > a 3GL for it that kept a big roomful of > > data entry gals happy on a PDP 11/70 with > > 2 MEGAbytes of memory. I even cobbled up > > a clock card for it so I could run 45.45 > > baud and copied the 20 meter RTTY autostart > > net at the same time. I think I still > > have a copy of my Baudot to ASCII converter > > assembler program and the custom card. I > > got pretty nervous changing the wirewrap > > on that expensive CPU in order to get access > > to my oddball clock card. I think it was > > 150 baud that I hacked to 45.45 baud. Gary, > > a veteran IBMer, was my mentor. What a guy, > > brilliant! > > > > I loved the way it kept the old versions > > of your files and you could purge /Keep ;2 > > to delete everything but the current version > > and one previous copy when disc space got > > tight. > > > > I used to have to key the bootstrap loader > > program on the console switches in binary > > to start it. I think I still remember the > > program. > > > > Somehow I don't think the DEC 11/70 would > > be fast enough to do the DSP. > > > > > > Any HP MPE fans here? Now there was an > > intuitive system. Too bad the cryptic > > UNIX killed it. I loved HP's TurboImage. > > That was a bulletproof database. It > > was lightning fast, if you kept up on > > DB maintenance. In a decade, I only lost > > one morning's worth of data to a crash. > > This was before RAID. I remember one day > > realizing that I hadn't booted the system > > for a year and a half. Over 60 simultaneous > > users. Try THAT with Windows. > > > > > > Mike - AA8K > > > > > > Brian Lloyd wrote: > > > >> > >> Precisely. Having to run Windows just ... well, anything would be > >> better: Linux, Solaris, BSD, MacOS, BeOS, VMS, RSX-11M, RSTS-E, > >> RT-11, > >> CP/M, OS-8, OS/MVT, ITS, Multics ... > >> > > > > _______________________________________________ > > FlexRadio Systems Mailing List > > FlexRadio@flex-radio.biz > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > Knowledge Base: http://kb.flex-radio.com/ Homepage: http:// > > www.flex-radio.com/ > > > > > > > > _______________________________________________ > > FlexRadio Systems Mailing List > > FlexRadio@flex-radio.biz > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > Knowledge Base: http://kb.flex-radio.com/ Homepage: http:// > > www.flex-radio.com/ > > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ > > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
