--- a/rvinterf/lowlevel/format_fc.c	Tue May 23 03:47:46 2023 +0000
+++ b/rvinterf/lowlevel/format_fc.c	Tue May 23 03:59:42 2023 +0000
@@ -18,58 +18,16 @@
 void
 print_ati_output()
 {
-	int i, c;
-	char *dp;
-
-	dp = fmtbuf;
-	strcpy(dp, "ATI: ");
-	dp += 5;
-	for (i = 1; i < rxpkt_len; i++) {
-		c = rxpkt[i];
-		if (c & 0x80) {
-			*dp++ = 'M';
-			*dp++ = '-';
-			c &= 0x7F;
-		}
-		if (c < 0x20) {
-			*dp++ = '^';
-			*dp++ = c + '@';
-		} else if (c == 0x7F) {
-			*dp++ = '^';
-			*dp++ = '?';
-		} else
-			*dp++ = c;
-	}
-	*dp = '\0';
+	strcpy(fmtbuf, "ATI: ");
+	safe_print_trace(rxpkt + 1, rxpkt_len - 1, fmtbuf + 5);
 	output_line(fmtbuf);
 }
 
 void
 print_fc_lld_msg()
 {
-	int i, c;
-	char *dp;
-
-	dp = fmtbuf;
-	strcpy(dp, "LLD: ");
-	dp += 5;
-	for (i = 1; i < rxpkt_len; i++) {
-		c = rxpkt[i];
-		if (c & 0x80) {
-			*dp++ = 'M';
-			*dp++ = '-';
-			c &= 0x7F;
-		}
-		if (c < 0x20) {
-			*dp++ = '^';
-			*dp++ = c + '@';
-		} else if (c == 0x7F) {
-			*dp++ = '^';
-			*dp++ = '?';
-		} else
-			*dp++ = c;
-	}
-	*dp = '\0';
+	strcpy(fmtbuf, "LLD: ");
+	safe_print_trace(rxpkt + 1, rxpkt_len - 1, fmtbuf + 5);
 	output_line(fmtbuf);
 }