NCR Computers of the 20th Century => Mainframes => Topic started by: lapham on September 05, 2016, 07:54:57 pm

Title: 390 and 500 systems
Post by: lapham on September 05, 2016, 07:54:57 pm
I am new here so I hope you will forgive me if I'm not in the right directory ;D
I started with NCR in 1962 in Chicago. I was an service apprentice working on the 390 systems. Most of my training as an apprentice was at Spiegel's where they had 5 390's - Tracer numbers 1, 2, and 5 were 3 of them. I graduated from CTEC and spent the next 12 years servicing 390 and 500 systems in Chicago. We had about 50 systems and 6 servicemen. I remember a lot more about the 390 and 500 than I really want to ;D
In 1976 I went to Cambridge as a specialist on the Retail Systems - 725, 8250, 8270 and 9020 just to name a few. This group later became the Retail Global Support Center in Atlanta in 1990. I retired from there in 2000 but I am still friends with many of my coworkers. Over the 39 years with NCR I also serviced many other machines - too numerous to mention like 315, CRAM, on-line communications on and on.
When I figure out how to post pictures I will. I tried to attach a picture of the Chicago EDP office and Data Center as a test.
Any questions about 390 or 500 fire away. Or 725, 8250, 8270, 9020.
Richard Lapham

Title: Re: 390 and 500 systems
Post by: heikobuss on February 18, 2019, 11:17:51 am
Hello Richard,

in the "last days" of the NCR 500 the 500-users could buy a disk to connect to the system. This was a very seldom peripheral, and I got now  a photo of the disk.

 I'm trying to get more information about the disk and how to operate this unit and how it was organized (Table of contents?). Yesterday I looked at the 500 machine command table and found no command to write to and to read from the disk.

As a former 500 field engineer - do you know anything about this disk?


Title: Re: 390 and 500 systems
Post by: lapham on February 18, 2019, 02:47:50 pm
WOW I never heard of a disk on a 500. I left Chicago and all service of the 500's in 1976. Went to Cambridge OH to be a specialist on the Retail 725 systems. I too do not know of any command that would run a disk, or think of any other command that could be modified to run one. Could the disk be an aftermarket unit? Europe only thing? I'll pass this on to another 500 service man from Chicago that worked on them longer than I.