Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F413xx_v2/TMR9/ISTS#0x0
Interrupt status register
Overflow interrupt flag
Channel 1 interrupt flag
Channel 2 interrupt flag
Trigger interrupt flag
Channel 1 recapture flag
Channel 2 recapture flag
https://github.com/cmsis-svd/cmsis-svd-data