FAT12 1MByte Filesystem for Irena

INIT.RC	     script loaded at startup
IRENA.RBF    18-ch DIRENA, Altera cyclon 3 FPGA, Raw Binary File
DIRENA.RC    direna settings
MEASURE.RC   enable data streaming to SDcard & ethernet
PRESSURE.RC  setup of the pressure monitor
CRON.RC      cron script, to run a pressure measurement every second
ASCENT.SPY   pressure spy script, turns to DESCENT.SPY at 200 mbar
DESCENT.SPY  pressure spy script, turns off µSD-card writes at 800 mbar