assertEquals(0xFFFFFFFFFFFFFFFFL, SMBUtil.readInt8(src, 8));
        assertEquals(0x0000000000000000L, SMBUtil.readInt8(src, 16));
    }

    @Test
    void testWriteInt8() {
        byte[] dst = new byte[24];

        // Test with specific value
        SMBUtil.writeInt8(0x123456789ABCDEF0L, dst, 0);
        assertEquals((byte) 0xF0, dst[0]);