auto − initiate OS autoboot sequence The prom command is used to initiate the two-level OS autoboot sequence.  Once initiated, the autoboot sequence delays for approximately 20 seconds, during this delay the autoboot may be aborted by typing a control-c on the console.  When the delay expires, the program specified by the prom monitor environment variable "bootfile"
 */ #define GPR_BASE0/* general purpose regs */ #defineNGP_REGS 32 /* number of gpr’s */
 
#define FPR_BASE(GPR_BASE+NGP_REGS)/* fp regs