Method hexChecksum

tools/mchex.js:84–96

(s)

	}

	hexChecksum(s) {
		if (s[0] != ':')
			throw new Error("checksum for '" + s + "' failed: no initial :");

		let accum = 0;
		for (let i=0; i<(s.length-1)/2; i++) {
			let chunk = s.slice(i*2+1, i*2+3);
			accum += parseInt(chunk, 16);
		}

		let twoC = ((~(accum-1)) & 0xff);
		return ("00" + twoC.toString(16)).slice(-2).toUpperCase();
	}

	generateSegment(addr) {
		this.currentSegment = (addr & 0xffff0000);