#!/bin/bash

if [ $# -ne 1 ]; then
    echo "Usage: $0 <bin_file>"
    exit 1
fi

BIN_FILE="$1"
OFFSET=0x1dcfe

if [ ! -f "$BIN_FILE" ]; then
    echo "Error: File '$BIN_FILE' not found"
    exit 1
fi

FILE_SIZE=$(stat -f%z "$BIN_FILE" 2>/dev/null || stat -c%s "$BIN_FILE" 2>/dev/null)
DECIMAL_OFFSET=$((OFFSET))

if [ $DECIMAL_OFFSET -ge $FILE_SIZE ]; then
    echo "Error: Offset $OFFSET ($DECIMAL_OFFSET) exceeds file size ($FILE_SIZE bytes)"
    exit 1
fi

if [ $((DECIMAL_OFFSET + 2)) -gt $FILE_SIZE ]; then
    echo "Error: Cannot read 2 bytes starting from offset $OFFSET (file too small)"
    exit 1
fi

BYTES=$(xxd -s $DECIMAL_OFFSET -l 2 -p "$BIN_FILE")
BYTE1=$(echo "$BYTES" | cut -c1-2)
BYTE2=$(echo "$BYTES" | cut -c3-4)
echo "$BYTE2$BYTE1"