+XMKDIR = $4B ; create a folder. Only available in telemon 3.x
+XRM = $4D ; remove a folder or a file. Only available in telemon 3.x
+XSOUT = $67 ; send accumulator value (A) to RS232, available in telemon 2.4 & 3.x : if RS232 buffer is full, the Oric Telestrat freezes