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PCEmulator.js
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PCEmulator.js
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/*
add by hao
模拟器的核心代码
*/
// used as callback wrappers for emulated PIT and PIC chips
function set_hard_irq_wrapper(irq) { this.hard_irq = irq;}
function return_cycle_count() { return this.cycle_count; }
//add by hao have no idea begin
function unix_array(n) {
return new Uint8Array(n);
}
//add by hao have no idea end
//add by hao sector begin
//////////////pc_disk
pc_disk.prototype.identify = function() {
function rh(sh, v) {
th[sh * 2] = v & 0xff;
th[sh * 2 + 1] = (v >> 8) & 0xff;
}
function uh(begin, str, len) {
var i, v;
for (i = 0; i < len; i++) {
if (i < str.length) {
v = str.charCodeAt(i) & 0xff;
} else {
v = 32;
}
th[begin * 2 + (i ^ 1)] = v;
}
}
var th, i, vh;
th = this.io_buffer;//hao importent
for (i = 0; i < 512; i++) th[i] = 0;
rh(0, 0x0040);
rh(1, this.cylinders);
rh(3, this.heads);
rh(4, 512 * this.sectors);
rh(5, 512);
rh(6, this.sectors);
rh(20, 3);
rh(21, 512);
rh(22, 4);
uh(27, "JSLinux HARDDISK", 40); //hao display memeray?
rh(47, 0x8000 | 128);
rh(48, 0);
rh(49, 1 << 9);
rh(51, 0x200);
rh(52, 0x200);
rh(54, this.cylinders);
rh(55, this.heads);
rh(56, this.sectors);
vh = this.cylinders * this.heads * this.sectors;
rh(57, vh);
rh(58, vh >> 16);
if (this.mult_sectors) rh(59, 0x100 | this.mult_sectors);
rh(60, this.nb_sectors);
rh(61, this.nb_sectors >> 16);
rh(80, (1 << 1) | (1 << 2));
rh(82, (1 << 14));
rh(83, (1 << 14));
rh(84, (1 << 14));
rh(85, (1 << 14));
rh(86, 0);
rh(87, (1 << 14));
};
pc_disk.prototype.set_signature = function() {
this.select &= 0xf0;
this.nsector = 1;
this.sector = 1;
this.lcyl = 0;
this.hcyl = 0;
};
pc_disk.prototype.abort_command = function() {
this.status = 0x40 | 0x01;
this.error = 0x04;
};
pc_disk.prototype.set_irq = function() {
if (! (this.cmd & 0x02)) {
this.ide_if.set_irq_func(1);
}
};
pc_disk.prototype.transfer_start = function(wh, xh) {
this.end_transfer_func = xh;
this.data_index = 0;
this.data_end = wh;
};
pc_disk.prototype.transfer_stop = function() {
this.end_transfer_func = this.transfer_stop.bind(this);
this.data_index = 0;
this.data_end = 0;
};
pc_disk.prototype.get_sector = function() {
var yh;
if (this.select & 0x40) {
yh = ((this.select & 0x0f) << 24) | (this.hcyl << 16) | (this.lcyl << 8) | this.sector;
} else {
yh = ((this.hcyl << 8) | this.lcyl) * this.heads * this.sectors + (this.select & 0x0f) * this.sectors + (this.sector - 1);
}
return yh;
};
pc_disk.prototype.set_sector = function(yh) {
var zh, r;
if (this.select & 0x40) {
this.select = (this.select & 0xf0) | ((yh >> 24) & 0x0f);
this.hcyl = (yh >> 16) & 0xff;
this.lcyl = (yh >> 8) & 0xff;
this.sector = yh & 0xff;
} else {
zh = yh / (this.heads * this.sectors);
r = yh % (this.heads * this.sectors);
this.hcyl = (zh >> 8) & 0xff;
this.lcyl = zh & 0xff;
this.select = (this.select & 0xf0) | ((r / this.sectors) & 0x0f);
this.sector = (r % this.sectors) + 1;
}
};
pc_disk.prototype.sector_read = function() {
var yh, n, Mg;
yh = this.get_sector();
n = this.nsector;
if (n == 0) n = 256;
if (n > this.req_nb_sectors) n = this.req_nb_sectors;
this.io_nb_sectors = n;
Mg = this.bs.read_async(yh, this.io_buffer, n, this.sector_read_cb.bind(this));
if (Mg < 0) {
this.abort_command();
this.set_irq();
} else if (Mg == 0) {
this.sector_read_cb();
} else {
this.status = 0x40 | 0x10 | 0x80;
this.error = 0;
}
};
pc_disk.prototype.sector_read_cb = function() {
var n, Ah;
n = this.io_nb_sectors;
this.set_sector(this.get_sector() + n);
this.nsector = (this.nsector - n) & 0xff;
if (this.nsector == 0) Ah = this.sector_read_cb_end.bind(this);
else Ah = this.sector_read.bind(this);
this.transfer_start(512 * n, Ah);
this.set_irq();
this.status = 0x40 | 0x10 | 0x08;
this.error = 0;
};
pc_disk.prototype.sector_read_cb_end = function() {
this.status = 0x40 | 0x10;
this.error = 0;
this.transfer_stop();
};
pc_disk.prototype.sector_write_cb1 = function() {
var yh, Mg;
this.transfer_stop();
yh = this.get_sector();
Mg = this.bs.write_async(yh, this.io_buffer, this.io_nb_sectors, this.sector_write_cb2.bind(this));
if (Mg < 0) {
this.abort_command();
this.set_irq();
} else if (Mg == 0) {
this.sector_write_cb2();
} else {
this.status = 0x40 | 0x10 | 0x80;
}
};
pc_disk.prototype.sector_write_cb2 = function() {
var n;
n = this.io_nb_sectors;
this.set_sector(this.get_sector() + n);
this.nsector = (this.nsector - n) & 0xff;
if (this.nsector == 0) {
this.status = 0x40 | 0x10;
} else {
n = this.nsector;
if (n > this.req_nb_sectors) n = this.req_nb_sectors;
this.io_nb_sectors = n;
this.transfer_start(512 * n, this.sector_write_cb1.bind(this));
this.status = 0x40 | 0x10 | 0x08;
}
this.set_irq();
};
pc_disk.prototype.sector_write = function() {
var n;
n = this.nsector;
if (n == 0) n = 256;
if (n > this.req_nb_sectors) n = this.req_nb_sectors;
this.io_nb_sectors = n;
this.transfer_start(512 * n, this.sector_write_cb1.bind(this));
this.status = 0x40 | 0x10 | 0x08;
};
pc_disk.prototype.identify_cb = function() {
this.transfer_stop();
this.status = 0x40;
};
pc_disk.prototype.exec_cmd = function(ga) {
var n;
switch (ga) {
case 0xA1:
case 0xEC:
this.identify();
this.status = 0x40 | 0x10 | 0x08;
this.transfer_start(512, this.identify_cb.bind(this));
this.set_irq();
break;
case 0x91:
case 0x10:
this.error = 0;
this.status = 0x40 | 0x10;
this.set_irq();
break;
case 0xC6:
if (this.nsector > 128 || (this.nsector & (this.nsector - 1)) != 0) {
this.abort_command();
} else {
this.mult_sectors = this.nsector;
this.status = 0x40;
}
this.set_irq();
break;
case 0x20:
case 0x21:
this.req_nb_sectors = 1;
this.sector_read();
break;
case 0x30:
case 0x31:
this.req_nb_sectors = 1;
this.sector_write();
break;
case 0xC4:
if (!this.mult_sectors) {
this.abort_command();
this.set_irq();
} else {
this.req_nb_sectors = this.mult_sectors;
this.sector_read();
}
break;
case 0xC5:
if (!this.mult_sectors) {
this.abort_command();
this.set_irq();
} else {
this.req_nb_sectors = this.mult_sectors;
this.sector_write();
}
break;
case 0xF8:
this.set_sector(this.nb_sectors - 1);
this.status = 0x40;
this.set_irq();
break;
default:
this.abort_command();
this.set_irq();
break;
}
};
//add by hao sector end
//add by hao ide0 begin
// ide硬盘相关的核心代码,部分混淆的代码没有修正
//////////////ide_driver
ide_driver.prototype.ioport_write = function(fa, ga) {
var s = this.cur_drive;
var Ch;
fa &= 7;
switch (fa) {
case 0:
break;
case 1:
if (s) {
s.feature = ga;
}
break;
case 2:
if (s) {
s.nsector = ga;
}
break;
case 3:
if (s) {
s.sector = ga;
}
break;
case 4:
if (s) {
s.lcyl = ga;
}
break;
case 5:
if (s) {
s.hcyl = ga;
}
break;
case 6:
s = this.cur_drive = this.drives[(ga >> 4) & 1];
if (s) {
s.select = ga;
}
break;
default:
case 7:
if (s) {
s.exec_cmd(ga);
}
break;
}
};
ide_driver.prototype.ioport_read = function(fa) {
var s = this.cur_drive;
var Mg;
fa &= 7;
if (!s) {
Mg = 0xff;
} else {
switch (fa) {
case 0:
Mg = 0xff;
break;
case 1:
Mg = s.error;
break;
case 2:
Mg = s.nsector;
break;
case 3:
Mg = s.sector;
break;
case 4:
Mg = s.lcyl;
break;
case 5:
Mg = s.hcyl;
break;
case 6:
Mg = s.select;
break;
default:
case 7:
Mg = s.status;
this.set_irq_func(0);
break;
}
}
return Mg;
};
ide_driver.prototype.status_read = function(fa) {
var s = this.cur_drive;
var Mg;
if (s) {
Mg = s.status;
} else {
Mg = 0;
}
return Mg;
};
ide_driver.prototype.cmd_write = function(fa, ga) {
var i, s;
if (! (this.cmd & 0x04) && (ga & 0x04)) {
for (i = 0; i < 2; i++) {
s = this.drives[i];
if (s) {
s.status = 0x80 | 0x10;
s.error = 0x01;
}
}
} else if ((this.cmd & 0x04) && !(ga & 0x04)) {
for (i = 0; i < 2; i++) {
s = this.drives[i];
if (s) {
s.status = 0x40 | 0x10;
s.set_signature();
}
}
}
for (i = 0; i < 2; i++) {
s = this.drives[i];
if (s) {
s.cmd = ga;
}
}
};
ide_driver.prototype.data_writew = function(fa, ga) {
var s = this.cur_drive;
var p, th;
if (!s) return;
p = s.data_index;
th = s.io_buffer;
th[p] = ga & 0xff;
th[p + 1] = (ga >> 8) & 0xff;
p += 2;
s.data_index = p;
if (p >= s.data_end) s.end_transfer_func();
};
ide_driver.prototype.data_readw = function(fa) {
var s = this.cur_drive;
var p, Mg, th;
if (!s) {
Mg = 0;
} else {
p = s.data_index;
th = s.io_buffer;
Mg = th[p] | (th[p + 1] << 8);
p += 2;
s.data_index = p;
if (p >= s.data_end) s.end_transfer_func();
}
return Mg;
};
ide_driver.prototype.data_writel = function(fa, ga) {
var s = this.cur_drive;
var p, th;
if (!s) return;
p = s.data_index;
th = s.io_buffer;
th[p] = ga & 0xff;
th[p + 1] = (ga >> 8) & 0xff;
th[p + 2] = (ga >> 16) & 0xff;
th[p + 3] = (ga >> 24) & 0xff;
p += 4;
s.data_index = p;
if (p >= s.data_end) s.end_transfer_func();
};
ide_driver.prototype.data_readl = function(fa) {
var s = this.cur_drive;
var p, Mg, th;
if (!s) {
Mg = 0;
} else {
p = s.data_index;
th = s.io_buffer;
Mg = th[p] | (th[p + 1] << 8) | (th[p + 2] << 16) | (th[p + 3] << 24);
p += 4;
s.data_index = p;
if (p >= s.data_end) s.end_transfer_func();
}
return Mg;
};
function pc_disk(that, b_list) {
var Fh, Gh;
this.ide_if = that;
this.bs = b_list;
Gh = b_list.get_sector_count();
Fh = Gh / (16 * 63);
if (Fh > 16383) Fh = 16383;
else if (Fh < 2) Fh = 2;
this.cylinders = Fh;
this.heads = 16;
this.sectors = 63;
this.nb_sectors = Gh;
this.mult_sectors = 128;
this.feature = 0;
this.error = 0;
this.nsector = 0;
this.sector = 0;
this.lcyl = 0;
this.hcyl = 0;
this.select = 0xa0;
this.status = 0x40 | 0x10;
this.cmd = 0;
this.io_buffer = unix_array(128 * 512 + 4);//hao
this.data_index = 0;
this.data_end = 0;
this.end_transfer_func = this.transfer_stop.bind(this);//hao
this.req_nb_sectors = 0;
this.io_nb_sectors = 0;
}
//ide_driver(this, 0x1f0, 0x3f6, this.pic.set_irq.bind(this.pic, 14), block_list);
//http://wiki.osdev.org/PCI_IDE_Controller
function ide_driver(this_pc, fa, Hh, set_irq_function, block_list) {//ide0
var i, disk_drive;
this.set_irq_func = set_irq_function;
this.drives = [];
for (i = 0; i < 2; i++) {
if (block_list[i]) {
disk_drive = new pc_disk(this, block_list[i]);//hao
} else {
disk_drive = null;
}
this.drives[i] = disk_drive;
}
this.cur_drive = this.drives[0];
this_pc.register_ioport_write(fa, 8, 1, this.ioport_write.bind(this));
this_pc.register_ioport_read(fa, 8, 1, this.ioport_read.bind(this));
if (Hh) {
this_pc.register_ioport_read(Hh, 1, 1, this.status_read.bind(this));
this_pc.register_ioport_write(Hh, 1, 1, this.cmd_write.bind(this));
}
this_pc.register_ioport_write(fa, 2, 2, this.data_writew.bind(this));
this_pc.register_ioport_read(fa, 2, 2, this.data_readw.bind(this));
this_pc.register_ioport_write(fa, 4, 4, this.data_writel.bind(this));
this_pc.register_ioport_read(fa, 4, 4, this.data_readl.bind(this));
}
//add by hao ide0 end
//add by hao read disk begin
//block_size nb_blocks
function create_block_list(block_url, block_size, nb_blocks) {
if (block_url.indexOf("%d") < 0) throw "Invalid URL";
if (nb_blocks <= 0 || block_size <= 0) throw "Invalid parameters";
this.block_sectors = block_size * 2;
this.nb_sectors = this.block_sectors * nb_blocks;
this.url = block_url;
this.max_cache_size = Math.max(1, Math.ceil(2536 / block_size));
this.cache = new Array();
this.sector_num = 0;
this.sector_index = 0;
this.sector_count = 0;
this.sector_buf = null;
this.sector_cb = null;
}
create_block_list.prototype.get_sector_count = function() {
return this.nb_sectors;
};
create_block_list.prototype.get_time = function() {
return + new Date();
};
create_block_list.prototype.get_cached_block = function(Nh) {
var Oh, i, Ph = this.cache;
for (i = 0; i < Ph.length; i++) {
Oh = Ph[i];
if (Oh.block_num == Nh) return Oh;
}
return null;
};
create_block_list.prototype.new_cached_block = function(Nh) {
var Oh, Qh, i, j, Rh, Ph = this.cache;
Oh = new Object();
Oh.block_num = Nh;
Oh.time = this.get_time();
if (Ph.length < this.max_cache_size) {
j = Ph.length;
} else {
for (i = 0; i < Ph.length; i++) {
Qh = Ph[i];
if (i == 0 || Qh.time < Rh) {
Rh = Qh.time;
j = i;
}
}
}
Ph[j] = Oh;
return Oh;
};
create_block_list.prototype.get_url = function(this_url, number) {
var p, s;
s = number.toString();
while (s.length < 9) s = "0" + s;
p = this_url.indexOf("%d");
return this_url.substr(0, p) + s + this_url.substring(p + 2, this_url.length);
};
create_block_list.prototype.read_async_cb = function(Sh) {
var Nh, l, ue, Oh, i, Th, Uh, Vh, Wh;
var Xh, Dg;
while (this.sector_index < this.sector_count) {
Nh = Math.floor(this.sector_num / this.block_sectors);
Oh = this.get_cached_block(Nh);
if (Oh) {
ue = this.sector_num - Nh * this.block_sectors;
l = Math.min(this.sector_count - this.sector_index, this.block_sectors - ue);
Th = l * 512;
Uh = this.sector_buf;
Vh = this.sector_index * 512;
Wh = Oh.buf;
Xh = ue * 512;
for (i = 0; i < Th; i++) {
Uh[i + Vh] = Wh[i + Xh];
}
this.sector_index += l;
this.sector_num += l;
} else {
Dg = this.get_url(this.url, Nh);
//load_binary(Dg, this.read_async_cb2.bind(this));
load_binary_remote(Dg, this.read_async_cb2.bind(this));
return;
}
}
this.sector_buf = null;
if (!Sh) {
this.sector_cb(0);
}
};
create_block_list.prototype.add_block = function(num, data, data_len) {
var Oh, Yh, i;
Oh = this.new_cached_block(num);
Yh = Oh.buf = unix_array(this.block_sectors * 512);
if (typeof data == "string") {
for (i = 0; i < data_len; i++) Yh[i] = data.charCodeAt(i) & 0xff;
} else {
for (i = 0; i < data_len; i++) Yh[i] = data[i];
}
};
create_block_list.prototype.read_async_cb2 = function(Gg, ng) {
var Nh;
if (ng < 0 || ng != (this.block_sectors * 512)) {
this.sector_cb( - 1);
} else {
Nh = Math.floor(this.sector_num / this.block_sectors);
this.add_block(Nh, Gg, ng);
this.read_async_cb(false);
}
};
create_block_list.prototype.read_async = function(yh, Yh, n, Zh) {
if ((yh + n) > this.nb_sectors) return - 1;
var hdd_debug = document.getElementById('hdd_debug');
hdd_debug.innerHTML = 'r - reading ' + n + ' sectors after sector ' + yh;
this.sector_num = yh;
this.sector_buf = Yh;
this.sector_index = 0;
this.sector_count = n;
this.sector_cb = Zh;
this.read_async_cb(true);
if (this.sector_index >= this.sector_count) {
return 0;
} else {
return 1;
}
};
create_block_list.prototype.preload = function(block_list, next_func) {
var i, block_name, num;
if (block_list.length == 0) {
setTimeout(next_func, 0);
} else {
this.preload_cb2 = next_func;
this.preload_count = block_list.length;
for (i = 0; i < block_list.length; i++) {
num = block_list[i];
block_name = this.get_url(this.url, num);
//load_binary(block_name, this.preload_cb.bind(this, num));
load_binary_remote(block_name, this.preload_cb.bind(this, num));
}
}
};
create_block_list.prototype.preload_cb = function(num, data, data_len) {//hao
console.log("preload_cb:"+data_len);
if (data_len < 0) {} else {
this.add_block(num, data, data_len);
this.preload_count--;
if (this.preload_count == 0) {
this.preload_cb2(0);
}
}
};
create_block_list.prototype.write_async = function(yh, Yh, n, Zh) { //hao
var hdd_debug = document.getElementById('hdd_debug');
hdd_debug.innerHTML = 'w - writing ' + n + ' sectors after sector ' + ide_driver;
//
// dd if=/dev/zero of=/dev/hda bs=512 count=4 seek=1268 && sync
// yh = first sector
// n = sector count
// Yh = data
// Zh = callback - determine: what for?
return - 1;
};
//add by hao read disk end
//add by hao net0 begin
network_driver.prototype.reset = function() {
this.isr = 0x80;
};
network_driver.prototype.update_irq = function() {
var bi;
bi = (this.isr & this.imr) & 0x7f;
if (bi) this.set_irq_func(1);
else this.set_irq_func(0);
};
network_driver.prototype.compute_mcast_idx = function(ci) {
var di, ac, i, j, b;
di = -1;
for (i = 0; i < 6; i++) {
b = ci[i];
for (j = 0; j < 8; j++) {
ac = (di >>> 31) ^ (b & 0x01);
di <<= 1;
b >>= 1;
if (ac) di = (di ^ 0x04c11db6) | ac;
}
}
return di >>> 26;
};
network_driver.prototype.buffer_full = function() {
var ei, Rb, fi;
Rb = this.curpag << 8;
fi = this.boundary << 8;
if (Rb < fi) ei = fi - Rb;
else ei = (this.stop - this.start) - (Rb - fi);
return (ei < (1514 + 4));
};
network_driver.prototype.receive_packet = function(Yh) {//hao
// http://compbio.cs.toronto.edu/repos/snowflock/xen-3.0.3/tools/ioemu/hw/ne2000.c
var gi, hi, ng, Rb, ii, wh, ji, fa;
var ki, i;
wh = Yh.length;
console.log("ne2000: receiving " + wh + " bytes");
if (this.cmd & 0x01 || this.buffer_full() || wh < 6) {
console.log("ne2000: either stop command, or buffer full, or received less than 6 bytes");
return;
}
// what does RX configuration register contain?
if (this.rxcr & 0x10) {
// promiscuous: receive all
} else {
if (Yh[0] == 0xff && Yh[1] == 0xff && Yh[2] == 0xff && Yh[3] == 0xff && Yh[4] == 0xff && Yh[5] == 0xff) {
console.log("ne2000: broadcast mac address");
if (! (this.rxcr & 0x04)) {
console.log("ne2000: rxcr not set up to receive broadcast");
return;
}
} else if (Yh[0] & 0x01) {
// multicast address
console.log("ne2000: multicast mac address");
if (! (this.rxcr & 0x08)) {
console.log("ne2000: rxcr not set up to receive multicast");
return;
}
ii = li(Yh);
if (! (this.mult[ii >> 3] & (1 << (ii & 7)))) return;
} else if (this.phys[0] == Yh[0] && this.phys[1] == Yh[1] && this.phys[2] == Yh[2] && this.phys[3] == Yh[3] && this.phys[4] == Yh[4] && this.phys[5] == Yh[5]) {
console.log("ne2000: mac address is correct");
} else {
console.log("ne2000: ignoring wrong mac address");
return;
}
}
if (wh < 60) wh = 60; // grow min buffer
Rb = this.curpag << 8;
ji = this.mem;//hao
gi = wh + 4; // 4 bytes for header
hi = Rb + ((gi + 4 + 255) & ~0xff); // address for next packet
if (hi >= this.stop) hi -= (this.stop - this.start);
this.rsr = 0x01; // receive status: enrsr_rxok
if (Yh[0] & 0x01) this.rsr |= 0x20; // rsr |= enrsr_phy
fa = Rb & 0x7fff; // fa = index & 0x7fff (not in ne2000.c!)
if (fa >= 0x4000) { // not under if in ne2000.c
ji[fa] = this.rsr & 0xff;
ji[fa + 1] = (hi >> 8) & 0xff;
ji[fa + 2] = gi & 0xff;
ji[fa + 3] = (gi >> 8) & 0xff;
}
Rb += 4; // index += 4
ki = 0; // This was missing! not sure what's the difference from Rb
while (wh > 0) { // write packet data
if (Rb >= this.stop) break;
ng = Math.min(wh, this.stop - Rb);
if (ki < Yh.length) ng = Math.min(ng, Yh.length - ki);
ng = Math.min(ng, 0x4000 - (Rb & 0x3fff));
fa = Rb & 0x7fff;
if (fa >= 0x4000) {
if (ki < Yh.length) {
for (i = 0; i < ng; i++) ji[fa + i] = Yh[ki + i];
console.log("ne2000: wrote " + ng + " bytes");
} else {
for (i = 0; i < ng; i++) ji[fa + i] = 0;
console.log("ne2000: wrote " + ng + " zeroes");
}
}
ki += ng;
Rb += ng;
if (Rb == this.stop) Rb = this.start;
wh -= ng;
}
this.curpag = hi >> 8;
this.isr |= 0x01;
this.update_irq();
console.log("ne2000: packet has been received");
};
network_driver.prototype.send_packet = function() {
var Rb;
Rb = (this.tpsr << 8) & 0x7fff;
if (Rb + this.tcnt <= (32 * 1024)) {
this.send_packet_func(this.mem, Rb, this.tcnt);
}
this.tsr = 0x01;//hao (Terminate and Stay Resident Program) ?
this.isr |= 0x02;//Interrupt Service Routines
this.cmd &= ~0x04;
this.update_irq();
};
network_driver.prototype.ioport_write = function(fa, ga) {
var ue, mi;
fa &= 0xf;
if (fa == 0x00) {
this.cmd = ga;
if (! (ga & 0x01)) {
this.isr &= ~0x80;
if ((ga & (0x08 | 0x10)) && this.rcnt == 0) {
this.isr |= 0x40;
this.update_irq();
}
if (ga & 0x04) {
this.send_packet();
}
}
} else {
mi = this.cmd >> 6;
ue = fa | (mi << 4);
switch (ue) {
case 0x01:
this.start = ga << 8;
break;
case 0x02:
this.stop = ga << 8;
break;
case 0x03:
this.boundary = ga;
break;
case 0x0f:
this.imr = ga;
this.update_irq();
break;
case 0x04:
this.tpsr = ga;
break;
case 0x05:
this.tcnt = (this.tcnt & 0xff00) | ga;
break;
case 0x06:
this.tcnt = (this.tcnt & 0x00ff) | (ga << 8);
break;
case 0x08:
this.rsar = (this.rsar & 0xff00) | ga;
break;
case 0x09:
this.rsar = (this.rsar & 0x00ff) | (ga << 8);
break;
case 0x0a:
this.rcnt = (this.rcnt & 0xff00) | ga;
break;
case 0x0b:
this.rcnt = (this.rcnt & 0x00ff) | (ga << 8);
break;
case 0x0c:
this.rxcr = ga;
break;
case 0x0e:
this.dcfg = ga;
break;
case 0x07:
this.isr &= ~ (ga & 0x7f);
this.update_irq();
break;
case 0x11:
case 0x11 + 1 : case 0x11 + 2 : case 0x11 + 3 : case 0x11 + 4 : case 0x11 + 5 : this.phys[ue - 0x11] = ga;
break;
case 0x17:
this.curpag = ga;
break;
case 0x18:
case 0x18 + 1 : case 0x18 + 2 : case 0x18 + 3 : case 0x18 + 4 : case 0x18 + 5 : case 0x18 + 6 : case 0x18 + 7 : this.mult[ue - 0x18] = ga;
break;
}
}
};
network_driver.prototype.ioport_read = function(fa) {
var ue, mi, Mg;
fa &= 0xf;
if (fa == 0x00) {
Mg = this.cmd;
} else {
mi = this.cmd >> 6;
ue = fa | (mi << 4);
switch (ue) {
case 0x04:
Mg = this.tsr;
break;
case 0x03:
Mg = this.boundary;
break;
case 0x07:
Mg = this.isr;
break;
case 0x08:
Mg = this.rsar & 0x00ff;
break;
case 0x09:
Mg = this.rsar >> 8;
break;
case 0x11:
case 0x11 + 1 : case 0x11 + 2 : case 0x11 + 3 : case 0x11 + 4 : case 0x11 + 5 : Mg = this.phys[ue - 0x11];
break;
case 0x17:
Mg = this.curpag;
break;
case 0x18:
case 0x18 + 1 : case 0x18 + 2 : case 0x18 + 3 : case 0x18 + 4 : case 0x18 + 5 : case 0x18 + 6 : case 0x18 + 7 : Mg = this.mult[ue - 0x18];
break;
case 0x0c:
Mg = this.rsr;
break;
case 0x21:
Mg = this.start >> 8;
break;
case 0x22:
Mg = this.stop >> 8;
break;
case 0x0a:
Mg = 0x50;
break;
case 0x0b:
Mg = 0x43;
break;
case 0x33:
Mg = 0;
break;
case 0x35:
Mg = 0x40;
break;
case 0x36:
Mg = 0x40;
break;
default:
Mg = 0x00;
break;
}
}
return Mg;
};
network_driver.prototype.dma_update = function(ng) {
this.rsar += ng;
if (this.rsar == this.stop) this.rsar = this.start;
if (this.rcnt <= ng) {
this.rcnt = 0;
this.isr |= 0x40;
this.update_irq();
} else {
this.rcnt -= ng;
}
};
network_driver.prototype.asic_ioport_write = function(fa, ga) {
var fa;
if (this.rcnt == 0) return;
if (this.dcfg & 0x01) {
fa = (this.rsar & ~1) & 0x7fff;
if (fa >= 0x4000) {
this.mem[fa] = ga & 0xff;
this.mem[fa + 1] = (ga >> 8) & 0xff;
}
this.dma_update(2);
} else {
fa = this.rsar & 0x7fff;
if (fa >= 0x4000) {
this.mem[fa] = ga & 0xff;
}
this.dma_update(1);
}
};
network_driver.prototype.asic_ioport_read = function(fa) {
var fa, Mg;
if (this.dcfg & 0x01) {
fa = (this.rsar & ~1) & 0x7fff;
Mg = this.mem[fa] | (this.mem[fa + 1] << 8);
this.dma_update(2);
} else {
fa = this.rsar & 0x7fff;
Mg = this.mem[fa];
this.dma_update(1);
}
return Mg;
};
network_driver.prototype.asic_ioport_writel = function(fa, ga) {
var fa;
if (this.rcnt == 0) return;
fa = (this.rsar & ~1) & 0x7fff;
if (fa >= 0x4000) {
this.mem[fa] = ga & 0xff;
this.mem[fa + 1] = (ga >> 8) & 0xff;
}
fa = (fa + 2) & 0x7fff;
if (fa >= 0x4000) {
this.mem[fa] = (ga >> 16) & 0xff;
this.mem[fa + 1] = (ga >> 24) & 0xff;
}
this.dma_update(4);
};
network_driver.prototype.asic_ioport_readl = function(fa) {
var fa, Mg;
fa = (this.rsar & ~1) & 0x7fff;
Mg = this.mem[fa] | (this.mem[fa + 1] << 8);
fa = (fa + 2) & 0x7fff;
Mg |= (this.mem[fa] << 16) | (this.mem[fa + 1] << 24);
this.dma_update(4);
return Mg;
};
network_driver.prototype.reset_ioport_write = function(fa, ga) {};
network_driver.prototype.reset_ioport_read = function(fa) {
this.reset();
};
function network_driver(this_pc, base, set_irq_function, arr, send_function) {//hao network,网络驱动
var i;
this.set_irq_func = set_irq_function;
this.send_packet_func = send_function;
this_pc.register_ioport_write(base, 16, 1, this.ioport_write.bind(this));
this_pc.register_ioport_read(base, 16, 1, this.ioport_read.bind(this));
this_pc.register_ioport_write(base + 0x10, 1, 1, this.asic_ioport_write.bind(this));