# PYNQ-ZU - Could not find IP or hierarchy Pool\_0 in overlay

**URL:** <https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087>\
**Category:** Support\
**Created:** [September 21, 2023, 11:46am UTC](https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087 "2023-09-21T11:46:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![joshua20000216](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/joshua20000216/32/5051_2.png) [@joshua20000216](https://discuss.pynq.io/u/joshua20000216)\
**Post date:** [September 21, 2023, 11:46am UTC](https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087/1 "2023-09-21T11:46:15Z")

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I am trying to run the “conv” and “pool” ip on my board  
but the board only detect the conv IP

Below are the code , Block design and hardware file

 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/4/4a5d57f9239e67101d4512c35bb523fdabbe2638.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/c/cbf51276c7abe2e7ae0c4bb8ab1db8d56000c8aa.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/1/180635d74c82d2a0c5a52c8128f5e755065ff463.png)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/8/854b3f2614fcb693861f862cfe54fb7398ec4ded.png)  
[test.hwh](https://discuss.pynq.io/uploads/short-url/umz8dmnSyW9Hk00G0ST28jXGNLO.hwh) (1.2 MB)  
[test.bit](https://discuss.pynq.io/uploads/short-url/bHlfzwhpf8NjqzPPBwEHXIdDs6X.bit) (7.4 MB)

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**Author:** ![Mohammad\_Hossein\_Sam](https://avatars.discourse-cdn.com/v4/letter/m/f14d63/32.png) [@Mohammad\_Hossein\_Sam](https://discuss.pynq.io/u/Mohammad_Hossein_Sam)\
**Post date:** [September 26, 2023, 11:55pm UTC](https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087/2 "2023-09-26T23:55:02Z")

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Try following steps maybe help:  
1- in Vivado → Address editor, find the base address and range of pool\_0 s\_axi port  
2- Try to make a MMIO by the base address and range as it explained here:  
[https://pynq.readthedocs.io/en/v2.4/pynq\_libraries/mmio.html](https://pynq.readthedocs.io/en/v2.4/pynq_libraries/mmio.html)

 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/e/e7fd1f3d2da845918975d68d1d45890c2cdccce5.png)

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**Author:** ![joshua20000216](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/joshua20000216/32/5051_2.png) [@joshua20000216](https://discuss.pynq.io/u/joshua20000216)\
**Post date:** [September 28, 2023, 11:34am UTC](https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087/3 "2023-09-28T11:34:23Z")

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Ok I’ll try it. Thanks your attention

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**Author:** ![shiqi17](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@shiqi17](https://discuss.pynq.io/u/shiqi17)\
**Post date:** [November 24, 2023, 7:20am UTC](https://discuss.pynq.io/t/pynq-zu-could-not-find-ip-or-hierarchy-pool-0-in-overlay/6087/4 "2023-11-24T07:20:18Z")

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I would like to ask what is the purpose of this?