58 lines
923 B
C
58 lines
923 B
C
/*
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* Copyright (c) 1980 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)subr.c 1.1 94/10/31 SMI"; /* from UCB 5.1 5/7/85 */
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#endif not lint
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#include <sgtty.h>
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#include "hp2648.h"
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handshake()
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{
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int i;
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char ch;
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if( shakehands != TRUE )
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return;
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ch = ' ';
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putchar(ENQ);
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fflush(stdout);
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while(1){
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i = read(fildes, &ch, 1);
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if(i < 0)
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continue;
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if(ch == ACK)
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break;
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putchar('Z');
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fflush(stdout);
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stty(fildes, &sarg);
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exit(0);
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}
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}
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buffready(n)
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int n;
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{
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buffcount = buffcount + n;
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if(buffcount >= 80){
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handshake();
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putchar(ESC);
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putchar(GRAPHIC);
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putchar(PLOT);
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putchar(BINARY);
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buffcount = n+4;
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}
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}
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itoa(num,byte1,byte2)
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int num;
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char *byte1,*byte2;
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{
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*byte1 = (num & 037) | 040;
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*byte2 = ((num>>5) & 037) | 040;
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}
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