A microprocessor controlled measuring stage — Part of a measuring device for track chamber pictures

✍ Scribed by H. Vogt; W. Kusmierz; H. Mencke; U. Schwendicke; H. Schiller; M. Wille

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 304 KB
• Volume: 26
• Category: Article
• ISSN: 0010-4655
• DOI: 10.1016/0010-4655(82)90164-3

✦ Synopsis

We are using an Intel 8080 microprocessor to control the movement of a mechanical measuring stage. It is a component of a computer-controlled half-automatic measuring device called HEVAS. The tasks of the microprocessor are:

controlling the velocity of the measuring stage, -steering of the stage according to the input by a track ball, -positioning of the stage, -circular movement. The program needs 2 Kbyte of PROM and about 250 byte of RAM. It consists of a foreground (velocity control) task and a background task (the others). Calculations are done with a mixed 8 and 16-bit arithmetic. The program has been written mainly in PL/M but time-critical parts are in assembler language.