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The MiscTool call SysFailMgr ($1503) has been modified so that a process calling it is simply killed, instead of causing system operation to stop. This was done because many programs use SysFailMgr when a simple error message would have sufficed. There are, however, some tool and GS/OS errors which are truly system failure messages, and these do cause system operation to stop. These errors are as follows:

$0305 Damaged heartbeat queue detected.
$0308 Damaged heartbeat queue detected.
$0681 Event queue damaged.
$0682 Queue handle damaged.
$08FF Unclaimed sound interrupt.

What the system does after displaying the message is the same as for a system panic.