My question is how to verify “R0” (Read only) registers through backdoor or front door mechanism ? In frontdoor usually we do masking of RO registers to not to write .If RO register is designed with bug with RW type how to verify this issue without write

UVM
1

My question is how to verify “R0” (Read only) registers through backdoor or front door mechanism ? In frontdoor usually we do masking of RO registers to not to write .If RO register is designed with bug with RW type how to verify this issue without write ?
any Mechanism by using default methods available ?

2

BACKDOOR mechanism does not have any access limitations, you can READ and WRITE without any errors. You can wrie a RO register through BACKDOO and read it through FRONTDOOR. Writing a RO register will not modify your register ontent. If the register content will change you have a bug.