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11 votes
Accepted

How can I send RS-232 serial data to a Tandy plotter reliably?

The manual says nothing more than it can print 12 characters per second and it uses BUSY pin. Even if you have connected BUSY output to CTS input, and turned RTS/CTS handshaking on, there is still a ...
Justme's user avatar
  • 32.2k
6 votes

Which plotter used these commands?

It was Calcomp 763, or its narrow variant Calcomp 765. I've got a scan of a page from "Машинная графика для системы БЭСМ-алгол" ("Computer graphics for the BESM-ALGOL system" by V. ...
Leo B.'s user avatar
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6 votes
Accepted

Which plotter used these commands?

There is at least some indication that these are Calcomp commands. The Calcomp Software Reference Manual is available at bitsavers.org and covers the 'Direct Commands' sent to the device. On page 5.24 ...
Jon Custer's user avatar
  • 1,328

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