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Article #80 (419 is last): Newsgroups: freenet.sci.comp.atari.questions From: ab170 Subject: VBLANK Date: Sun Jul 30 09:12:26 1989 Do you by any chance know the Verticle BLANK (VVBLKD) register? "Mapping the Atari" says that the registers are 548 & 549, but this isn't so. Tom Lekan (ab170) ** Answered by JOHN SUCHY (aa271) on Thu Mar 19 00:53:10 1987 ** Please reread the section around548 in Mapping The Atari. VVBLKD at 548,549 is a DEFERRED vector register. The immediate VBLANK vector resides at VVBLKI (546,547). Your Co-sysop John E. Suchy aa271 Thanks for asking.