.ENVIRON
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.ENVIRON
Name
.ENVIRON - Read/write environment parameters
Code
$0071
Description
The purpose of the TRAP is to allow a user program access to
certain debugger environmental parameters. These parameters
include default boot devices and start-up conÞgurations.
Entry Conditions
R03: Parameter storage buffer
R04: Size of the storage buffer
R05: Operation type:
Exit Conditions Different From Entry
For operations 1 & 2
0 Size in bytes of the information the debugger will pass
1 Update the NVRAM with environmental parameters passed
2 The debugger will update your parameter storage buffer with
environmental information from the NVRAM.
R03:
0 No errors encountered, operation completed
1 Debugger has more data than the passed buffer
could hold.
Partial data transferred:
1 Checksum error occurred during the write
update (write only)
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