+
+; at90s2313
+; setup:
+; vcc card --- atmel vcc
+; vcc cam ---
+; rst cam --- atmel int0 (pd2)
+; rst card --- atmel (pd4)
+; clk card -\
+; - atmel t1 (pd5)
+; clk cam -/
+; gnd card --- gnd cam --- atmel gnd
+; i/o card --- atmel icp (pd6)
+; i/o cam --- atmel int1 (pd3)
+
+.include "../include/2313def.inc"
+
+; functions by now:
+;
+; stupid mode only by now. just see what cam/card do and redirect
+; this to card/cam.
+;
+; next implementation:
+;
+; try to read one byte of card/cam communication and output via uart.
+; output time information in some way.
+;
+; future:
+;
+; buffer/parse whole strings and decide whether to send to card or not.
+
+; some defines
+; ------------
+
+; baudrate = clock freq / etu
+; std smartcard etu: 372
+; other smartcards: 625
+.define clock 8000000
+.define clk_h 4000000
+.define etu 625
+.define etu_h 312
+.define baudrate 5 ; UBRR value for 76800 bits/s (8mhz clock)
+
+; names for registers
+.define tmp r16
+.define bitcount r17
+.define tmp1 r18
+.define tmp2 r19
+.define byte r20
+.define overflow_counter r21
+.define one r1
+.define zero r0
+
+
+;
+; programm code
+; -------------