Entry | |
---|---|
R1 | &8A (Service call number) |
R2 | 0 (reason code) |
R3 | Bitmask of which ports are being powered down |
Exit | |
---|---|
R3 | Bitmask – set bits mean no objection to power down |
This service is issued by the Portable module before powering down hardware.
If this results in R3 = 0, the service should be claimed to prevent it being needlessly passed round remaining modules.
See also Service_Portable 1, which is issued when powering up hardware.