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Add note about submodules.

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Tim 'mithro' Ansell 2019-08-23 13:37:51 +02:00
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README.md
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@ -742,6 +742,12 @@ Done!
$
```
If you get an error message about missing modules, check you have all submodules cloned and setup with;
```sh
$ git submodule update --recursive --init
$
```
Take a look at `test/csr.csv`. This describes the various regions present in our design. You can see `memory_region,sram,0x10000000,131072`, which indicates the RAM is 128 kilobytes long and is located at `0x10000000`, just as when we had a CPU. You can also see the timer, which is a feature that comes as part of LiteX. Let's try reading and writing RAM:
```sh