Updated GB_safe_read_memory (markdown)

GB_safe_read_memory.md

@@ -6,8 +6,18 @@ In `memory.h`
 
 ## Description
 
-TBD
+Performs a memory read on a 16-bit address on the emulator instance and returns the 8-bit read value, while avoiding side-effects that would occur of the CPU was to perform the same read.
 
 ## Thread Safety
 
 `GB_safe_read_memory` must not be called if the instance is being run in another thread, but may be called from the current one (via a callback).
+
+## Notes
+
+To read data outside of a currently mapped bank, you can use [[GB_get_direct_access]].
+
+## See Also
+
+* [[GB_read_memory]]
+* [[GB_write_memory]]
+* [[GB_get_direct_access]]