display logo gfx, misc gfx related helpers

utils/palremap.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main(int argc, char **argv) {
+	if(argc<3) {
+		fprintf(stderr, "Usage: %s <infile> <outfile>\n", argv[0]);
+		return 1;
+	}
+	FILE *in, *out;
+	if((in=fopen(argv[1], "rb"))==NULL) {
+		perror("Could not open input file");
+		return 1;
+	}
+	if((out=fopen(argv[2], "wb"))==NULL) {
+		perror("Could not open output file");
+		return 1;
+	}
+	while(1) {
+		uint8_t c=fgetc(in);
+		if(feof(in))break;
+		if(c>=1 && c<=43) {
+			c+=212;
+		}
+		fputc(c, out);
+	}
+	fclose(out);
+	fclose(in);
+	return 0;
+}