1*15459Sralph #ifndef lint 2*15459Sralph static char sccsid[] = "@(#)subr.c 4.1 (Berkeley) 11/10/83"; 3*15459Sralph #endif 4*15459Sralph 5*15459Sralph #include <sgtty.h> 6*15459Sralph #include "hp2648.h" 7*15459Sralph 8*15459Sralph handshake() 9*15459Sralph { 10*15459Sralph int i; 11*15459Sralph char ch; 12*15459Sralph 13*15459Sralph if( shakehands != TRUE ) 14*15459Sralph return; 15*15459Sralph ch = ' '; 16*15459Sralph putchar(ENQ); 17*15459Sralph fflush(stdout); 18*15459Sralph while(1){ 19*15459Sralph i = read(fildes, &ch, 1); 20*15459Sralph if(i < 0) 21*15459Sralph continue; 22*15459Sralph if(ch == ACK) 23*15459Sralph break; 24*15459Sralph putchar('Z'); 25*15459Sralph fflush(stdout); 26*15459Sralph stty(fildes, &sarg); 27*15459Sralph exit(0); 28*15459Sralph } 29*15459Sralph } 30*15459Sralph 31*15459Sralph buffready(n) 32*15459Sralph int n; 33*15459Sralph { 34*15459Sralph buffcount = buffcount + n; 35*15459Sralph if(buffcount >= 80){ 36*15459Sralph handshake(); 37*15459Sralph putchar(ESC); 38*15459Sralph putchar(GRAPHIC); 39*15459Sralph putchar(PLOT); 40*15459Sralph putchar(BINARY); 41*15459Sralph buffcount = n+4; 42*15459Sralph } 43*15459Sralph } 44*15459Sralph 45*15459Sralph itoa(num,byte1,byte2) 46*15459Sralph int num; 47*15459Sralph char *byte1,*byte2; 48*15459Sralph { 49*15459Sralph *byte1 = (num & 037) | 040; 50*15459Sralph *byte2 = ((num>>5) & 037) | 040; 51*15459Sralph } 52