Super sharp crystal clear VGA, with very high bandwidth of screen update.. thanks to CCM memory. The big remaining question is how much input pressure can it take, via interupts or some other mechanism the z80/other-units can use. Hate to have to z80->other->stm32 in order to talk sensibly; could use an stm8 so at least same arch for programmer sake, or a coupel shift registeres maybe, so could poll them.. but its all bleh :)