Implement 8bpp chunky raster ops about ptos HOT 1 OPEN

Some of these may already be available in FVDI (no sure yet).

There are bitplane handling functions in XaAES (texture loaders) and Highwire (image handlers) sources. I also have a bunch of chunky functions that handle 256 colors to 32bit in various formats. ALL of these mentioned are coded in C not assembler.

Note that I also have some C code to handle VDI colors/palettes. Also, although handling 32bit color modes is faster (RPi native), you can set (force) as low as 2bit color mode. 2bit color in memory would look like a ST, but maybe RPi has enuf speed to convert that to or use 32bit mode with mono colors of ur choosing?

colorspc.c.txt

from ptos.