Search found 16 matches

by RetroRalph
Wed Feb 24, 2010 6:27 am
Forum: Video Display Processor
Topic: Megadrive video timings
Replies: 120
Views: 58056

Yes, it is. When you write the final word to the VDP that will trigger a DMA, the 68K is *immediately* locked until the DMA completes - even if it was in the middle of a move.l instruction. Surprising, but true. Another thing I documented a long time ago. I can confirm this (if it needed confirming...