Misc. fixes

- Fix for buserror#461 Borrowed from https://stuvel.eu/post/2021-04-27-atmega328pb-on-gcc/ - Add easy to understand usage instructions
kholia · Jan 14, 2022 · 2bb79fa · 2bb79fa
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diff --git a/README.md b/README.md
@@ -149,3 +149,30 @@ And this is a gtkwave trace of what the firmware is doing. You can zoom in, meas
 in gtkwave, select trades to see etc.
 
 Quite a few other examples are available!
+
+Usage
+-----
+
+Install build dependencies:
+
+```
+sudo apt-get install libelf-dev freeglut3 freeglut3-dev gcc-avr avr-libc gcc make
+```
+
+Clone and build the latest `simavr` code:
+
+```
+git clone https://github.com/buserror/simavr.git
+
+cd simavr
+
+make
+```
+
+Run sample programs:
+
+```
+./simavr/run_avr -f 16000000 -m atmega328p ArduinoUniqueID.ino.elf
+
+./simavr/run_avr -f 16000000 -m atmega328p ArduinoUniqueID.ino.hex
+```