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Graphics printer (Rainbow 1981-09)

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Looking for CoCo help? If you are trying to do something with your old Color Computer, read this quick reference. Want to contribute to this wiki? Be sure to read this first. This CoCo wiki project was started on October 29, 2004. --OS-9 Al

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Home / Publications / Rainbow / Rainbow 1981 / Rainbow 1981-09 - Graphics printer (Rainbow 1981-09)


As part of our continuity efforts to help with printer utilities, here is a screen printer for low-res graphics using the COLOR Computer and the LP VII.

This same logic will work with other printers, too. It is a little complicated with the LP VII because of the dot matrix graphics, a$ opposed to plain graphics characters.

If you want a fatter or thinner single graphics "block," just change the first CHR$(3) in Line 12 to another number. This number controls the number of times the dot-line is repeated. You will also have to change the record CHR$(3) in the same line to the value of the first so that the spaces and "blocks" match.

Here is the short program:

10 FOR X=0 TO 127
11 FOR Y=0 TO 63
12 IF POINT(Y,X) THEN PRINT#-2,CHR$(18)CHR$(28)CHR$(3)CHR$(255);ELSE PRINT#-2,CHR$(18)CHR$(28)CHR$(3)CHR$(128);
13 NEXT Y
14 PRINT#-2,CHR$(18)
15 NEXTX

Links

See this article as it appeared in the magazine page 13