Path: utzoo!utgpu!attcan!uunet!yale!root From: root@yale.UUCP (Celray Stalk) Newsgroups: comp.sys.atari.st Subject: Blitter problem Keywords: mega, blitter Message-ID: <39610@yale-celray.yale.UUCP> Date: 5 Oct 88 17:36:47 GMT Reply-To: fischer-michael@CS.YALE.EDU (Michael Fischer) Organization: Yale University Computer Science Dept, New Haven CT 06520-2158 Lines: 19 I just got a Mega-4 and am having a problem with the blitter chip. With the blitter turned off, everything is fine. With it on, partial "shadows" of the window border get left behind when I drag a window across the screen with the mouse. These are little vertical lines of random height running up from where the bottom of the window was as it was being moved. It looks as if the CPU is not synchronizing itself properly with the blitter chip, perhaps aborting a blit in the middle. The problem occurs with both TOS 1.2 (the Mega ROM) and the new Developer's version of TOS 1.4. Has anybody seen this problem before? Do I have a bad blitter chip, or is the problem systemic with all Mega's? ================================================== | Michael Fischer | | Arpanet: | | Bitnet: | | UUCP: | ==================================================