src/acpi.js

"use strict";

/** @const */
var PMTIMER_FREQ = 3579545;

/**
 * @constructor
 * @param {CPU} cpu
 */
function ACPI(cpu)
{
    var io = cpu.io;

    var acpi = {
        pci_id: 0x07 << 3,
        pci_space: [
            0x86, 0x80, 0x13, 0x71, 0x07, 0x00, 0x80, 0x02, 0x08, 0x00, 0x80, 0x06, 0x00, 0x00, 0x80, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x01, 0x00, 0x00,
        ],
        pci_bars: [],
        name: "acpi",
    };

    // 00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
    cpu.devices.pci.register_device(acpi);

    // ACPI status
    io.register_read(0xB004, this, undefined, function()
    {
        dbg_log("ACPI status read", LOG_ACPI);
        return 1;
    });

    // ACPI, pmtimer
    io.register_read(0xB008, this, undefined, undefined, function()
    {
        var value = v86.microtick() * (PMTIMER_FREQ / 1000) | 0;
        //dbg_log("pmtimer read: " + h(value >>> 0), LOG_ACPI);
        return value;
    });
}