Merge branch 'master' of https://github.com/PROPHESSOR/runtime

Author: PROPHESSOR

.initrd

@@ -0,0 +1,5 @@
+'use strict';
+
+const LBAReader = require('./read_lba');
+
+module.exports.read = new LBAReader().read;

JsOS.iso

@@ -0,0 +1,28 @@
+'use strict';
+
+const driverUtils = require('../../core/driver-utils');
+
+const ports = [];
+
+for (let i = 0; i < 8; i++) {
+  ports[i] = driverUtils.ioPort(0x1F0 + i);
+}
+
+class LBAReader {
+  read(lba, num) {
+    const buf = new Buffer(num * 512);
+    ports[6].write8(((lba >> 24) & 0xff) | 0b11100000);
+    ports[2].write8((num) & 0xff);
+    ports[3].write8((lba) & 0xff);
+    ports[4].write8((lba >> 8) & 0xff);
+    ports[5].write8((lba >> 16) & 0xff);
+    ports[7].write8(0x20);
+    while (!(ports[7].read8() & 8)); // TODO: if HDD doesn't exist, fail
+    for (let i = 0; i < num * 256; i++) {
+      buf.writeUInt16LE(ports[0].read16(), i * 2);
+    }
+    return buf;
+  }
+}
+
+module.exports = LBAReader;