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80COLUMNS provides a full-color display and blinking block cursor. Its author is unknown. It was uploaded to the GEnie file library on March 26, 1995. The screen editor has no obvious quirks. Switching upper/lowercase with PRINT CHR$(14) and PRINT CHR$(142) mode changes the entire screen as it does on the C64’s 40 column text screen. Changing the background color with POKE 53281,X is detected and changes the entire background as it does on the 40 column screen. 80COLUMNS is noticeably faster than Screen-80, especially when scrolling.
COLOR 80 was a commerical program sold by Richvale Telecommunications (RTC). It is similar to 80COLUMNS as it also provides a full-color display with blinking block cursor. Switching upper/lowercase changes the entire screen. Changing the background color with POKE 53281,X is not detected and only changes the background color of characters printed after the command.