--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/d144/edata-input-decomp.c	Wed Sep 25 04:32:32 2024 +0000
@@ -0,0 +1,56 @@
+/*
+ * This program reads an E-data compiled binary file (the kind intended
+ * as input to itt-ater-16) and converts it into ASCII form.  The ASCII
+ * output from this program is not in the same format as input to
+ * edata-input-compile, but it is a more compact ASCII-based format
+ * that will be useful for unit tests on the future sw implementation
+ * of RAA' function.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+main(argc, argv)
+	char **argv;
+{
+	FILE *binf, *outf;
+	uint8_t frame[38];
+	int rc;
+	unsigned n;
+
+	if (argc < 2 || argc > 3) {
+		fprintf(stderr, "usage: %s input.bin [output.asc]\n", argv[0]);
+		exit(1);
+	}
+	binf = fopen(argv[1], "r");
+	if (!binf) {
+		perror(argv[1]);
+		exit(1);
+	}
+	if (argc > 2) {
+		outf = fopen(argv[2], "w");
+		if (!outf) {
+			perror(argv[2]);
+			exit(1);
+		}
+	} else
+		outf = stdout;
+	for (;;) {
+		rc = fread(frame, 1, 38, binf);
+		if (!rc)
+			break;
+		if (rc != 38) {
+inv_input:		fprintf(stderr, "error: %s is not in expected format\n",
+				argv[1]);
+			exit(1);
+		}
+		if (frame[0] != 0xD4)
+			goto inv_input;
+		fprintf(outf, "%u%u ", (frame[1] & 2) >> 1, frame[1] & 1);
+		for (n = 0; n < 36; n++)
+			fprintf(outf, "%02x", frame[n+2]);
+		putc('\n', outf);
+	}
+	exit(0);
+}