About PUSH POP instructions。

[jduo.1]

I test push and pop instruction，some issue confuse me. ​

push cc  #cc = 0

​when cc=0，and cc is push to stack，the value in stack is 0x28，this mean I1 I0 is set，why？

pop cc​   #cc=0

when​ cc in stack is 0x2b，after pop，cc change to be 0x3 ，this mean I1 I0 is cleared auto，why？

the behave is correct？Please help me.

thanks.​

[SBEN .2]

Hello @jduo.1​ ,

Are you sur that no interrupt happened while you're stepping?

Could you disable the interrupts using SIM and retest your code?

 

Disclaimer: I've never used STM8, I've just skimmed through PM0044.

Best regards,

@SBEN .2​ 

[jduo.1]

I use STVD to debug, the program is not exsit ....

maybe this is caused by stm8-gdb.

[jduo.1]

thank you very much