This code can be used to model a microstrip line or a microstrip
patch antenna (the particular problem being modeled is determined
at compile-time via various declarations).
This module can be used to interface to the MMC card in MMC or
* SPI modes. It supports a multiple card environment. The reset and
* identification processes assume multiple cards on the bus.
* In MMC mode, the card number is used as the RCA operand in the
* commands.
