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Questions tagged [ibm370]

17votes
3answers
2kviews

How did EBCDIC files on IBM mainframes identify newlines?

I recently uncovered some old VM/CMS files that I archived around 30 years ago and have been looking at them out of curiosity. Since these were from an IBM System/370XA and VM/CMS, they're in EBCDIC ...
bjb's user avatar
  • 18.5k
8votes
1answer
512views

Implementation details about Lotus 1-2-3/M

Does anyone have implementation details of Lotus 1-2-3 for VM/SP5 and MVS/XA? Which programming language and compiler was used? A video of a 3270 session would be interesting. Is there any source of ...
Polluks's user avatar
7votes
2answers
1kviews

What was IBM VS/PC?

I found this 1976 Digital internal memorandum which is a competitive evaluation of IBM mainframes versus Digital's DECsystem-10 machines. Page 7 says the following: In 1976 IBM announced VS/PC which ...
Simon Kissane's user avatar
6votes
2answers
666views

How does one customize the 3270 terminal login screen in VM/370?

When using a pre-built system image such as the "VM/370 sixpack" or "MVS Tur(n)key" under Hercules, when a user connects a 3270 terminal, a login screen comes up with a banned ...
rbanffy's user avatar
4votes
2answers
363views

How can the current date be accessed from DOS/VS assembler?

In assembler on an old /370-125 running DOS/VS I can access the TOD (Time of day) with GETIME, i.e. the time since midnight. But I want to be able to print the date.
monok's user avatar
12votes
4answers
740views

Does anyone have any information on GUTS (Gothenburg University Timesharing System)?

Gothenburg Universities Computer Centre (in Sweden) developed a timesharing system for IBM mainframes, known as GUTS (variously expanded either as ''Gothenburg University Timesharing System'', or as ''...
Simon Kissane's user avatar
9votes
1answer
962views

Why did IBM skip "System/380" as a mainframe family name?

I've been reading Exhibit 14971 from US vs. IBM (Parts 1, 2, 3) which seems to give a very good overview of the history of the computer industry up to 1980, particularly the way IBM handled its ...
Wildcat Matt's user avatar

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