TOPIC ---------------------------------------------
On an Apple IIGS with the 0077B ROM installed using GS/OS, I occasionally
run into a Fatal System Error ID=911. In one case, it happens when the
I switch from MS-DOS (Applied Engineering, PC Transporter) to
ProDOS. In another case, it occurs after shutting down the Control Panel.
Running the Cortland Diagnostics does not locate the problem. Error ID=911
has to do with the Apple Desktop Bus.
DISCUSSION ---------------------------------------------
ID=911 means that too many sync errors occurred on the Desktop Bus. This
problem has been identified but not fixed in currently produced logic
boards. It has, however, been targeted for inclusion in future revisions.