When I look at the I/O for setting the bit it says:

1	If clear system is in word mode. Addresses are rotated 1 position up
2  343 				bringing either bit 13 or 15 into bit 0.

When I compare this to the other VGA documentation, it seems correct.

But when I look at the int10_modes.cpp code it's reversed (set is word address mode and cleared is byte address mode) with M_CGA2? So this means that data of mode 06h is written as in word mode (CGA compatible), but usually read as a normal EGA/VGA mode, taking every 2nd set of 8 pixels from the incorrect index. So instead of 0xC2, this needs to be 0xA2?

Doesn't this bit in int10_modes.cpp need to be reversed? Or is the comment incorrect (also all VGA manuals I can find atm)?