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6 votes
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Repairing an Old CRT Monitor (IBM 5153)

I ultimately solved all the issues. I had the following the following issues: Correcting the vertically overlapping screen Restoring the incorrect colors to their proper state The 2nd issue was ...
Sung's user avatar
  • 509
7 votes

Was the single-level store (SLS) really a breakthrough?

Back in 1980s and early 1990s, IBM talked about Single Level Storage a lot. I remember hearing Frank Soltis (one of the original architects) talk about it many times. This was the era when the S/38 ...
badjohn's user avatar
  • 2,174
2 votes

What's the earliest source for the legend of Gary Kildall's airplane snub?

Another common variant around Silicon Valley in the early days was that Kildall (or his wife) was unwilling to sign IBM's nondisclosure on the spot. Thinking about where I was when I heard some of ...
hawk's user avatar
  • 161
0 votes

Towards people who were there, what programs did you use to develop applications for the IBM 5150?

Turbo Pascal 2.0 and 3.0 were revolutionary products that made it possible to edit, compile, and run programs entirely within the memory of a PC with 192K of RAM (probably even with 128K). Saving a ...
supercat's user avatar
  • 37.2k
1 vote

Towards people who were there, what programs did you use to develop applications for the IBM 5150?

As someone active in the PC retroprogramming community -- coding for old systems, directly on those old systems -- as well as having coding experience on the PC since the 80s, I've found that Turbo ...
Jim Leonard's user avatar
0 votes

What is the full name of IBM CP-67/CMS' DUMPD command?

It's good practice for a summary of a (compound) abbreviation to expand its elements into a description. IBM certainly had very good technical authors at that time. The DUMPD summary ('Purpose') is &...
TonyM's user avatar
  • 4,267
2 votes

What is the full name of IBM CP-67/CMS' DUMPD command?

There is none. DUMPD is DUMPD. Remember Names were the way they are. It's about being memorable, not necessary about explaining anything. People worked for years on such systems and grew with them. ...
Raffzahn's user avatar
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