RV bring-up: RVT "system time" heartbeat messages now get printed every 20 s! The problem was a slight Nucleus API incompatibility between what the RVF code from TCS211 expected and what our FreeNucleus implements: in the TCS211 version of Nucleus it was OK to pass 0 for the initial_time parameter to NU_Create_Timer(), but our version flags such usage as an error. RVF used 0 as the dummy initial_time value when initializing the legacy RV timers with NU_DISABLE_TIMER. Implemented fix: using a dummy value of 1 instead.

#include <stdarg.h>

int
vsprintf(str, fmt, ap)
	va_list ap;
	char *str, *fmt;
{
	char *strptr;
	int len;

	strptr = str;
	len = _doprnt(fmt, ap, &strptr);
	*strptr = '\0';
	return(len);
}