Renesas F-ZTAT H8 Series Hardware Manual page 468

Appendix A CPU Instruction Set
Condition Code Notation
Symbol Description
Modified according to the instruction result
* Not fixed (value not guaranteed)
0 Always cleared to 0
⎯
Not affected by the instruction execution result
Rev.3.00 Jul. 19, 2007 page 442 of 532
REJ09B0397-0300