--- a/lcdemu/process.c	Mon Sep 07 10:18:39 2015 +0000
+++ b/lcdemu/process.c	Mon Sep 07 10:35:20 2015 +0000
@@ -3,6 +3,7 @@
  */
 
 #include <stdio.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <string.h>
@@ -12,6 +13,80 @@
 #include <X11/Xutil.h>
 #include "globals.h"
 
+#define	MAX_WIDTH	176
+
+static unsigned
+hexdecode(str)
+	char *str;
+{
+	unsigned accum = 0;
+	int i, c, n;
+
+	for (i = 0; i < 4; i++) {
+		c = str[i];
+		if (isdigit(c))
+			n = c - '0';
+		else if (isupper(c))
+			n = c - 'A' + 10;
+		else
+			n = c - 'a' + 10;
+		accum <<= 4;
+		accum |= n;
+	}
+	return(accum);
+}
+
+process_input_line(line)
+	char *line;
+{
+	int blitrow, blitcol, npix;
+	uint16_t pix16[MAX_WIDTH];
+	char *cp;
+	XImage *xi;
+
+	for (cp = line; isspace(*cp); cp++)
+		;
+	if (!isdigit(*cp)) {
+inv:		fprintf(stderr, "fc-lcdemu: invalid input line\n");
+		exit(1);
+	}
+	blitrow = atoi(cp);
+	while (isdigit(*cp))
+		cp++;
+	if (!isspace(*cp))
+		goto inv;
+	while (isspace(*cp))
+		cp++;
+	if (!isdigit(*cp))
+		goto inv;
+	blitcol = atoi(cp);
+	while (isdigit(*cp))
+		cp++;
+	if (!isspace(*cp))
+		goto inv;
+	while (isspace(*cp))
+		cp++;
+	if (!isxdigit(*cp))
+		goto inv;
+	for (npix = 0; *cp; ) {
+		if (!isxdigit(cp[0]) || !isxdigit(cp[1]) ||
+		    !isxdigit(cp[2]) || !isxdigit(cp[3]))
+			goto inv;
+		if (npix >= MAX_WIDTH) {
+			fprintf(stderr,
+		"fc-lcdemu error: input line exceeds MAX_WIDTH of %d pixels\n",
+				MAX_WIDTH);
+			exit(1);
+		}
+		pix16[npix++] = hexdecode(cp);
+		cp += 4;
+	}
+	xi = convert_function(pix16, npix);
+	XPutImage(mydisplay, mainwindow, mainwingc, xi, 0, 0, blitcol, blitrow,
+		  npix, 1);
+	XDestroyImage(xi);
+}
+
 input_on_stdin(inbuf, incount)
 	char *inbuf;
 {
@@ -31,9 +106,3 @@
 			linebuf[linesz++] = *cp;
 	}
 }
-
-process_input_line(line)
-	char *line;
-{
-	printf("Got input line: %s\n", line);
-}

--- a/lcdemu/ximage.c	Mon Sep 07 10:18:39 2015 +0000
+++ b/lcdemu/ximage.c	Mon Sep 07 10:35:20 2015 +0000
@@ -52,7 +52,7 @@
 		break;
 	default:
 		fprintf(stderr,
-"error: fc-ledemu has not been adapted for X11 depth != 24, yours is %d\n",
+"error: fc-lcdemu has not been adapted for X11 depth != 24, yours is %d\n",
 			display_depth);
 		exit(1);
 	}