tv_terminal -- 3 cogs !

Don Pomplun

tv_terminal.spin uses 3 cogs (leaving "only" 5). Just curious if it was a limitation of cog speed, or cog memory that necessitated doing it this way rather than in a single cog.
-- Don

cgracey

Because it's using a bitmap mode, one cog is acting as a graphics coprocessor to draw the characters, and a big chunk of RAM is also being used up. There is one cog running whose job it is to rasterize the video. The third cog is the one running your program.

A better way to go is the tv_text (I think it's called) which uses only 1 word per screen character and doesn't need the graphics coprocessing. This will save a COG and lots of RAM.

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Chip Gracey
Parallax, Inc.