Quote:
Originally Posted by ross
It's possible to recognize via code 8361 vs 8370 Agnus (or 8367 vs 8371)?
(in VPOSR there is only a bit for NTSC vs PAL version..)
|
Yes. A1000 Agnus variants generate vblank (vblank strobe register access) when vertical position is 1 (instead of correct zero). For example poll INTREQR vblank bit and when it gets set, check vertical position.