diff --git a/README.md b/README.md
index 55050fc..32e63d0 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# YMF-262 Firmware for Nucleo F722RE Board and STM32F7 MCU
+# YMF-262 Firmware for Nucleo F722ZE Board and STM32F7 MCU
 
 
 ## Building
@@ -14,6 +14,22 @@ To build a Flashable .elf file issue the following commands:
 	```cmake --preset Release && cmake --build --preset Release```
 
 ## Flashing:
-To flash the .elf file please issue the folowing command:
+To flash the .elf file please issue the following command:
   
-```openocd -f interface/stlink.cfg -f target/stm32f7x.cfg -c "program YMF262_Devboard_Firmware.elf verify reset exit"```
\ No newline at end of file
+```openocd -f interface/stlink.cfg -f target/stm32f7x.cfg -c "program YMF262_Devboard_Firmware.elf verify reset exit"```
+
+## Testing
+
+The HAL logic is unit-tested on the host (x86) using GoogleTest, with a `FakeGpio` mock that records the GPIO operations instead of touching hardware. This verifies the YMF262 write choreography (two-cycle address/data sequence and timing) without needing the physical chip.
+
+To build and run the tests:
+
+````cd Tests
+	cmake -B build
+	cmake --build build
+	./build/run_tests```
+
+GoogleTest is fetched automatically via CMake FetchContent on the first configure (requires internet).
+````
+
+