diff --git a/ps.c b/ps.c
new file mode 100644
index 0000000..c90834c
--- /dev/null
+++ b/ps.c
@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+void
+usage (char *s)
+{
+	fprintf (stderr, "Usage: %s [file]\n");
+}
+
+void
+process (FILE *f)
+{
+	int x, y, z;
+
+	printf ("/* XPM */\n");
+	printf ("static char *apple2[] = {\n");
+	printf ("\"88 52 2 1\",\n");
+	printf ("\"0 c #000000\",\n");
+	printf ("\"1 c #ffffff\",\n");
+	
+	for (y = 0; y < 52; y++) {
+		printf ("\"");
+
+		for (x = 0; x < 11; x++) {
+			int c = getc (f);
+
+			for (z = 7; z >= 0; z--)
+				if (c & (1 << z))
+					putchar ('0');
+				else
+					putchar ('1');
+		}
+
+		printf ("\",\n");
+	}
+
+	printf ("};\n");
+}
+
+int
+main (int argc, char **argv)
+{
+	if (argc < 2) {
+		process (stdin);
+	} else if (argc == 2) {
+		FILE *f = fopen (argv[1], "r");
+
+		if (f) {
+			process (f);
+			fclose (f);
+		} else {
+			fprintf (stderr, "%s: %s: %s\n", argv[0], argv[1],
+				 strerror (errno));
+			exit (EXIT_FAILURE);
+		}
+	} else {
+		usage (argv[0]);
+		exit (EXIT_FAILURE);
+	}
+
+	return (EXIT_SUCCESS);
+}