# How to do register model write read test(frontdoor, backdoor)?

**URL:** <https://verificationacademy.com/forums/t/how-to-do-register-model-write-read-test-frontdoor-backdoor/38568>\
**Category:** UVM\
**Tags:** uvm-register-model, UVM, UVM\_reg\_field, ral-backdoor, Register-Access\
**Created:** [January 10, 2021, 4:00am UTC](https://verificationacademy.com/forums/t/how-to-do-register-model-write-read-test-frontdoor-backdoor/38568 "2021-01-10T04:00:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![chr\_sue](https://verificationacademy.com/forums/user_avatar/verificationacademy.com/chr_sue/32/1199_2.png) [@chr\_sue](https://verificationacademy.com/forums/u/chr_sue)\
**Post date:** [January 11, 2021, 10:16am UTC](https://verificationacademy.com/forums/t/how-to-do-register-model-write-read-test-frontdoor-backdoor/38568/2 "2021-01-11T10:16:58Z")

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_In reply to [Xiang.L](https://verificationacademy.com/forums/t/how-to-do-register-model-write-read-test-frontdoor-backdoor/38568):_

Two things:  
(1) you do not show how the access policy of the reg fileds is.  
(2) your read and write command is the 3rd argument (parent) missing.

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