--- ray/src/rt/rpict.c	1992/10/02 16:19:10	2.15
+++ ray/src/rt/rpict.c	1992/10/15 21:13:17	2.17
@@ -63,7 +63,11 @@ int  ambounce = 0;			/* ambient bounces */
 char  *amblist[128];			/* ambient include/exclude list */
 int  ambincl = -1;			/* include == 1, exclude == 0 */
 
+#ifdef MSDOS
+int  ralrm = 60;			/* seconds between reports */
+#else
 int  ralrm = 0;				/* seconds between reports */
+#endif
 
 double	pctdone = 0.0;			/* percentage done */
 
@@ -151,6 +155,9 @@ closeheader()			/* done with header output */
 		return;
 	if (fflush(stdout) == EOF || (hfp = fopen(hfname, "r")) == NULL)
 		error(SYSTEM, "error reopening header file");
+#ifdef MSDOS
+	setmode(fileno(hfp), O_BINARY);
+#endif
 }
 
 
@@ -237,6 +244,9 @@ char  *pout, *zout, *prvr;
 					"cannot open output file \"%s\"", fbuf);
 				error(SYSTEM, errmsg);
 			}
+#ifdef MSDOS
+			setmode(fileno(stdout), O_BINARY);
+#endif
 			dupheader();
 		}
 		hres = hresolu; vres = vresolu; pa = pixaspect;
@@ -328,6 +338,9 @@ char  *zfile, *oldfile;
 			sprintf(errmsg, "cannot open z file \"%s\"", zfile);
 			error(SYSTEM, errmsg);
 		}
+#ifdef MSDOS
+		setmode(zfd, O_BINARY);
+#endif
 		for (i = 0; i <= psample; i++) {
 			zbar[i] = (float *)malloc(hres*sizeof(float));
 			if (zbar[i] == NULL)
@@ -585,6 +598,9 @@ char  *oldfile;
 		error(WARNING, errmsg);
 		return(0);
 	}
+#ifdef MSDOS
+	setmode(fileno(fp), O_BINARY);
+#endif
 				/* discard header */
 	getheader(fp, NULL);
 				/* get picture size */