DR Graph
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Revision as of 17:23, 4 April 2026 by JohnElliott (Talk | contribs) (Added description of GRAPHRSX functions)
Program for making business graphics from Digital Research. To run the application, place side A in drive A: and side B in drive B:.
RSX
The Amstrad version has a CP/M 3 RSX attached which modifies the program's behaviour:
- BDOS function 2Dh is used to stop the program terminating if there is a disk error.
- Input keycode 0FCh is translated to 1Bh (Escape) and 7Fh (Delete) is translated to 08h (Backspace).
- The code which loads overlays searches for the overlay on drive M:, and then on A: or B: depending on the number of the overlay.
- When files are being loaded from disk, BDOS function 2Ch is used to try and read as many records as possible in one go.
