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Add note about QEMU UART.

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Andrew Walbran 2023-03-08 13:57:50 +00:00
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src/bare-metal/aps/uart.md
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# Let's write a UART driver
The QEMU 'virt' machine has a [PL011][1] UART, so let's write a driver for that.
```rust,editable,compile_fail
{{#include examples/src/pl011.rs:Example}}
```
[1]: https://developer.arm.com/documentation/ddi0183/g