diff --git a/misc/pbsim2fa.js b/misc/pbsim2fa.js
new file mode 100644
index 0000000..b5629c5
--- /dev/null
+++ b/misc/pbsim2fa.js
@@ -0,0 +1,81 @@
+Bytes.prototype.reverse = function()
+{
+	for (var i = 0; i < this.length>>1; ++i) {
+		var tmp = this[i];
+		this[i] = this[this.length - i - 1];
+		this[this.length - i - 1] = tmp;
+	}
+}
+
+// reverse complement a DNA string
+Bytes.prototype.revcomp = function()
+{
+	if (Bytes.rctab == null) {
+		var s1 = 'WSATUGCYRKMBDHVNwsatugcyrkmbdhvn';
+		var s2 = 'WSTAACGRYMKVHDBNwstaacgrymkvhdbn';
+		Bytes.rctab = [];
+		for (var i = 0; i < 256; ++i) Bytes.rctab[i] = 0;
+		for (var i = 0; i < s1.length; ++i)
+			Bytes.rctab[s1.charCodeAt(i)] = s2.charCodeAt(i);
+	}
+	for (var i = 0; i < this.length>>1; ++i) {
+		var tmp = this[this.length - i - 1];
+		this[this.length - i - 1] = Bytes.rctab[this[i]];
+		this[i] = Bytes.rctab[tmp];
+	}
+	if (this.length&1)
+		this[this.length>>1] = Bytes.rctab[this[this.length>>1]];
+}
+
+if (arguments.length < 2) {
+	print("Usage: k8 pbsim2paf.js <chr.list> <pbsim1.maf> [[pbsim2.maf] ...]");
+	exit(1);
+}
+
+var file, buf = new Bytes(), buf2 = new Bytes();
+file = new File(arguments[0]);
+var chr_list = [];
+while (file.readline(buf) >= 0) {
+	var t = buf.toString().split(/\s+/);
+	chr_list.push(t[0]);
+}
+file.close();
+
+for (var k = 1; k < arguments.length; ++k) {
+	var fn = arguments[k];
+	file = new File(fn);
+	var state = 0, reg;
+	while (file.readline(buf) >= 0) {
+		var line = buf.toString();
+		if (state == 0 && line.charAt(0) == 'a') {
+			state = 1;
+		} else if (state == 1 && line.charAt(0) == 's') {
+			var t = line.split(/\s+/);
+			var st = parseInt(t[2]);
+			reg = [st, st + parseInt(t[3])];
+			state = 2;
+		} else if (state == 2 && line.charAt(0) == 's') {
+			var m, t = line.split(/\s+/);
+			if ((m = /S(\d+)_\d+/.exec(t[1])) == null) throw Error("Failed to parse the read name");
+			var chr_id = parseInt(m[1]) - 1;
+			if (chr_id >= chr_list.length) throw Error("Index outside the chr list");
+			var name = [t[1], chr_list[chr_id], reg[0], reg[1], t[4]].join("!");
+			var seq = t[6].replace(/\-/g, "");
+			if (seq.length != parseInt(t[5])) throw Error("Inconsistent read length");
+			if (seq.indexOf("NN") < 0) {
+				if (t[4] == '-') {
+					buf2.set(seq, 0);
+					buf2.length = seq.length;
+					buf2.revcomp();
+					seq = buf2.toString();
+				}
+				print(">" + name);
+				print(seq);
+			}
+			state = 0;
+		}
+	}
+	file.close();
+}
+buf.destroy();
+buf2.destroy();