A smart card is like a little computer. I will explain how it works in relation to a PC / Mac.
It has a eeprom which is like RAM in a PC. In a funcard this is an external eeprom (24C64).
It has a microcontroller (funcards have an Atmel one). This is the "brain". This part is equivilant to Pentium chip in a PC. It contains a bit of memory used to store a program. This is often called flash memory.
Basically, you have keys and other data in the eeprom, and these are applied by the software in the "Flash". One flash file can often be used with many different eeprom files.
If you want to tweak "flash" files you need a high level of expertise. If you want to tweak an eeprom, that is much easier thanks too some user friendly(ish) software. Try ISVEdit or PicBined if you really want to get stuck-in. I doubt that there is much you could acomplish that you couldn't do by just downloading a SatKoos file. |