1*19975Sdist /* 2*19975Sdist * Copyright (c) 1980 Regents of the University of California. 3*19975Sdist * All rights reserved. The Berkeley software License Agreement 4*19975Sdist * specifies the terms and conditions for redistribution. 5*19975Sdist */ 6*19975Sdist 715459Sralph #ifndef lint 8*19975Sdist static char sccsid[] = "@(#)subr.c 5.1 (Berkeley) 05/07/85"; 9*19975Sdist #endif not lint 1015459Sralph 1115459Sralph #include <sgtty.h> 1215459Sralph #include "hp2648.h" 1315459Sralph 1415459Sralph handshake() 1515459Sralph { 1615459Sralph int i; 1715459Sralph char ch; 1815459Sralph 1915459Sralph if( shakehands != TRUE ) 2015459Sralph return; 2115459Sralph ch = ' '; 2215459Sralph putchar(ENQ); 2315459Sralph fflush(stdout); 2415459Sralph while(1){ 2515459Sralph i = read(fildes, &ch, 1); 2615459Sralph if(i < 0) 2715459Sralph continue; 2815459Sralph if(ch == ACK) 2915459Sralph break; 3015459Sralph putchar('Z'); 3115459Sralph fflush(stdout); 3215459Sralph stty(fildes, &sarg); 3315459Sralph exit(0); 3415459Sralph } 3515459Sralph } 3615459Sralph 3715459Sralph buffready(n) 3815459Sralph int n; 3915459Sralph { 4015459Sralph buffcount = buffcount + n; 4115459Sralph if(buffcount >= 80){ 4215459Sralph handshake(); 4315459Sralph putchar(ESC); 4415459Sralph putchar(GRAPHIC); 4515459Sralph putchar(PLOT); 4615459Sralph putchar(BINARY); 4715459Sralph buffcount = n+4; 4815459Sralph } 4915459Sralph } 5015459Sralph 5115459Sralph itoa(num,byte1,byte2) 5215459Sralph int num; 5315459Sralph char *byte1,*byte2; 5415459Sralph { 5515459Sralph *byte1 = (num & 037) | 040; 5615459Sralph *byte2 = ((num>>5) & 037) | 040; 5715459Sralph } 58