The action performed depends on the reason code value at offset +0 in R1.
0 | &00 | Read soft-copy of CMOS clock as string |
1 | &01 | Read CMOS clock as BCD |
2 | &02 | Convert BCD to string |
3 | &03 | Read soft-copy of CMOS clock as 5-byte integer |
The purpose of this call is to provide a number of operations relating to time.