C-Netz: Generator and Arduino programmer for SIM cards

It supports the simple memory cards only. Works only with very early
phones, like BSA51 (tested so far).

An SLE4428 card must be written. The card must not have any protected
serial number area. Also the card must read all 416 written bits via ATR,
not only the first 32 bits.

sim/README

@@ -0,0 +1,15 @@
+This is a generator for the C-Netz Sim Card
+"Berechtigungskarte als Speicherkarte".
+
+The Smart Card "Berechtigungskarte als Prozessorkarte" is not supported.
+
+After generation, the hex data can be copied to the data array of simcard.ino
+and written to an SLE4428 or compatible.
+
+Note: The SLE card must not have protected serial number area. (ATR area)
+Also the card must show all 416 written bits via ATR, not only 32 bits.
+
+Tested:
+Works with BSA 51
+Does not work with all other phones I have.
+