/vr/ - Retro Games

>>6594338
>but you could only display 32 colors on screen at once without palette swapping trickery.
The trickery ran deep.
With OCS, there's EHB (64 colors, second half is the first half darkened by bitshifting the palette entry) and HAM6 (hold and modify, look it up) specialmodes, plus copper trickery (one palette entry could be written to every lores 8 pixels or so) and CPU trickery (cpu could be interrupted by the copper in arbitrary raster positions, and it could burst-write into the palette registers much faster than copper writes.)
Pic related is sliced HAM6, with per-line base HAM palettes.