Function memory_is_blank

LoadFile/teensy_loader_cli.c:785–795

}

int memory_is_blank(int addr, int block_size)
{
	if (addr < 0 || addr > MAX_MEMORY_SIZE) return 1;

	while (block_size && addr < MAX_MEMORY_SIZE) {
		if (firmware_mask[addr] && firmware_image[addr] != 255) return 0;
		addr++;
		block_size--;
	}
	return 1;
}