--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/miscprog/fbdump2ppm.c	Sat Jan 20 20:46:08 2018 +0000
@@ -0,0 +1,60 @@
+/*
+ * This program converts a dump of TI's R2D framebuffer (176x220 pix, 16-bit)
+ * captured via fc-memdump into PPM format for viewing.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define	NPIX	(176*220)
+
+FILE *inf, *outf;
+
+convert_pixel()
+{
+	int i, c;
+	u_char inb[2];
+	unsigned pix16, r, g, b;
+
+	for (i = 0; i < 2; i++) {
+		c = getc(inf);
+		if (c < 0) {
+			fprintf(stderr, "error: input is too short\n");
+			exit(1);
+		}
+		inb[i] = c;
+	}
+	pix16 = (inb[0] | (inb[1] << 8)) ^ 0xFFFF;
+	r = pix16 >> 11;
+	g = (pix16 >> 5) & 0x3F;
+	b = pix16 & 0x1F;
+	putc(r << 3, outf);
+	putc(g << 2, outf);
+	putc(b << 3, outf);
+}
+
+main(argc, argv)
+	char **argv;
+{
+	unsigned n;
+
+	if (argc != 3) {
+		fprintf(stderr, "usage: %s infile outfile\n", argv[0]);
+		exit(1);
+	}
+	inf = fopen(argv[1], "r");
+	if (!inf) {
+		perror(argv[1]);
+		exit(1);
+	}
+	outf = fopen(argv[2], "w");
+	if (!outf) {
+		perror(argv[2]);
+		exit(1);
+	}
+	fprintf(outf, "P6\n176 220\n255\n");
+	for (n = 0; n < NPIX; n++)
+		convert_pixel();
+	exit(0);
+}