CU-SeeMe0.70b6

Richard Cogger (R.Cogger@cornell.edu)
Fri, 19 Aug 1994 10:08:31 -0400


Folks,
A new beta of CU-SeeMe for the PowerMac is available for anonymous ftp:

Server: gated.cornell.edu
Directory: /pub/video/CU-SeeMe0.70b6
Files: CU-SeeMePPc0.70b6.bin
CU-SeeMe0.70.README.8-19.txt

A corresponding version for the 68k Macs should be available shortly.

This is purely a bug-fix version. There are no user-visible
changes and no changes to any protocol messages or datastreams. Bugs have
been fixed in the area of handling audio sound channels and interrupt-level
queue processing. On the relatively small number of PPc Mac's we have to
test with, this version is much more stable than the previous b1 version
(stays up many hours instead of a few minutes). Also, when running free on
an 8100AV (just capturing and displaying local video), it approaches 30
frames/sec as compared to 15 for the 68k version under emulation. However,
we have seen one crash, so there is at least one bug remaining.

An important fix had to do with handling critical sections in queue
management. The MetroWorks Code Warrior compiler generated a no-op for the
function which disabled interrupts on the 68k compiler, so the queue
handling routines were revised to eliminate the need for disabling
interrupts.

Some of the fixes may be helpful for non-PPc macs, particularly for
the 840AV and 660AV models which seem particularly prone to crash with use
of audio. A further announcement will be issued when the non-PPc version
is available. (We're chasing a problem with brightness and contrast
controls which appeared with the Code Warrior compilation for 68k.)

We would be especially interested to hear from anyone who finds
different behavior with this version, compared to previous versions.
Please note model/configuration, etc. Thanks.

Cheers, -Dick