2024-03-02: The wiki ran out of disk space, so things were not working. This has been resolved by adding another 5GB of quota ;-) Thanks to Tim Lindner for reporting the issues. 2020-05-17: If a page gives you an error about some revision not being found, just EDIT the page and the old page should appear in the editor. If it does, just SAVE that and the page should be restored. OS-9 Al (talk) 12:22, 17 May 2020 (CDT)

Screen monitor

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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 1981-10 - Screen monitor

Al Morgan of Pittsfield, MA, contributes this program which he characterizes as a screen printer and which we feel is really something more than that.

It is more like a screen monitor, because everything which appears on the screen will be dumped to the printer a line at a time as it is appearing on the screen. This makes it go pretty fast and, frankly, is an excellent utility. One of the reasons for the speed, of course, is that it is in machine language, which is poked into memory by the basic program listed below. Once it’s there, it will print everything out.

This program has a countless variety of uses. One which we have used a great deal is to debug -- so that results are listed on the printer. Also, changes you might wish to make in the program through the edit commands are easily discernable from the printout (although AI's program does not print the editing commands themselves.

You have an added bonus in that with this screen monitor you can get a complete listing of the programs you have stored on tape! Just go to the command mode and instruct the COLOR Computer to SKIPF "X". The result will be a printout of all program names. Now that's handy.

The Listing:

10 FOR X=1 TO 15
30 POKE 1007+X,A
50 POKE 359,126
60 POKE 360,3
70 POKE 361,240
80 DATA 52,22,198,254,215,111
90 DATA 190,160,2,173,3,15
100 DATA 111,53,150

Oh, Al cautions that if you wish to list, it must be done prior to running this program.


See this article as it appeared in the magazine, in