[Coco] [Color Computer] Chet Simpson's Sprite Compiler

[James Diffendaffer]

I spent part of the morning looking around for Coco and 6809 stuff and
ended up on Chet Simpson's pages.

I have been looking for a sprite editor plus utilities and the sprite
compiler would definitely make optimizing the sprite code easier.
Did this ever get finished or released?  The page is dated 2004.

FWIW, this sort of speed optimization is common on the 6502 but I
hadn't seen any coco source that took advantage of it.


I don't know if it would even be required on the 6809 but did this
tool also deal with larger sprites and interleave the drawing of the
sprite.

interleaved being...

copy bytes left to right on row 1
copy bytes right to left on row 2
copy bytes left to right on row 3
etc...

This was commonly used on the Speccy for large sprites so that less
manipulation of the pointer was required.  And yes, sprite data was
stored in reverse order on even rows.