hi,
I suspect that many info in the thread you linked are wrong or confused.
AFAIK, on both OCS and AGA the copper does 1 move every 8 pixel. So, with bitplanes turned off, you can only do 8x1.
To get higher resolution you have to use bitplanes to create a buffer for color changes done by the copper. The usual AGA chunkycopper uses 7 bitplanes, and the BPLCON4 features to switch the palette to bufferize copper moves. You can get
a 107x86 screen made up by 3x3 pixels and a smaller screen with 2x2 pixels.
regards
