Hello i just tried your core on a few of my running projects and almost all seems to work as it should.
The only problem are memcpy i use it on a transmitter to convert a struct to a array to send. On smeezekitty's core its working but when i try it on your core the array gets filled with seemingly random numbers.
if i copy in a memcpy function directly in the sketch all is well but that takes some extra space....
Are memcpy supposed to work or are the core to minimal to have it supported?