Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!caip!nike!oliveb!glacier!navajo!rokicki
From: rokicki@navajo.STANFORD.EDU (Tomas Rokicki)
Newsgroups: net.micro.amiga
Subject: blitter problems
Message-ID: <781@navajo.STANFORD.EDU>
Date: Thu, 7-Aug-86 20:23:02 EDT
Article-I.D.: navajo.781
Posted: Thu Aug  7 20:23:02 1986
Date-Received: Sun, 10-Aug-86 20:09:19 EDT
Organization: Stanford University
Lines: 27

[ blitter blitter blitter blitter ]

About that code I just posted.  Looking in the RKM volume 2, it says
under WaitBlit():

BUGS  Because of a bug in agnus, this code may return too soon when
      blitter has in fact not started the blit yet, even though
      BltSize has been written.  This most often occurs in a heavily
      loaded system with extended memory, HIRES, and 4 bitplanes.

They are exactly correct; I have found the 4 bitplanes not to be
a requirement, however.  I know of no fix to my code that I posted.
So, if you run that LIFE, or use those blit routines, either do not
use extended memory or any other programs which require a lot of
blitter.

I just tried it under 1.2 beta 6; I can't seem to repeat the bug!
It repeats easily under 1.1, but I can't find any mention of the bug
fix in the docs.  Perhaps the bug was a side effect of something else.

All around, I like 1.2 beta 6; all of my programs seem to work under
it.  You should see the spectacular crashes Archon provides under 1.2
beta 6 with extended memory!  I thought only the TRS-80 Coco did that.
It seems to work if I unplug the extended RAM though.

Does anyone know if the WaitBlit() routine has been fixed?  It seems
to work for me . . .