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/* A module of ASYNCx.LIB version 1.02 */ 
 
#include  
#include "asyncdef.h" 
 
/************************************************************ 
 Wait for at least t eighteenths of a second for a character 
 to arrive at port p. If no character arrives, return 1. 
 Otherwise return 0. Also if p is NULL return 1 so that 
 unopened ports seem to be in an eof state. 
************************************************************/ 
int a_eof(register ASYNC *p,int t) 
{unsigned long t0,far *t1; 
 if (p) 
  {t1=(unsigned long far *)MK_FP(0x40,0x6c); 
   t0=*t1; 
   while(p->ibufhead==p->ibuftail && (*t1)-t0<=(unsigned long)t); 
   if (p->ibuftail!=p->ibuftail) 
     return 0; 
  } 
 return 1; 
} /* end of a_eof(p) */