-programs are configured for reading track 1 data of magnetic cards with isa
 board decoding address 0x240

additions to basic circuit from lab 2
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
data line (card reader)  -> pin 2 (74244)
clock line (card reader) -> pin 1 (7414)
pin 2 (7414) 			 -> irq 9

the cardreader and the 7414 need ground and +5V in the correct pins 

read magstrip.phrack for information on magnetic cards