Small improvments

Readme.md

@@ -38,7 +38,7 @@ How to build, run and embed?
 - If you want a compressed and fast (ie, with debug code removed) version, you
   need Closure Compiler. 
   Set the path to `compiler.jar` in the Makefile and run `make v86_all.js`.
-- ROM and disk images are loaded via AJAX, so if you want to try out `index.html`
+- ROM and disk images are loaded via XHR, so if you want to try out `index.html`
   locally, make sure to serve it from a local webserver.
 - For more details on how to customize the behaviour and interface, see [docs/adapters.md](docs/adapters.md).
 
@@ -54,13 +54,32 @@ there might be some actual uses.
 If you build something interesting, let me know. However, keep in mind that the project
 is not very stable at the moment.
 
+Compatibility
+-
+
+Here's an overview of the operating systems supported in v86:
+
+- Linux works pretty well. Graphical boots fails in many versions, but you
+  mostly get a shell. The mouse is never detected automatically.
+  - Damn Small Linux (2.4 Kernel): Run with `lowram` and choose PS2 mouse in
+    xsetup. Takes circa 10 minutes to boot.
+  - Tinycore, Nanolinux (3.0 kernel): `udev` and `X` fail, but you get a
+    terminal.
+- FreeDOS and Windows 1.01 run pretty good. A few applications cause the OS to
+  freeze. Some BIOS problems.
+- KolibriOS works.
+- Haiku boots after 30 minutes. r1alpha4 immediately reboots, the newest version
+  compiled from source works.
+
+
+
 
 How can I contribute?
 -
 
-- Someone who could work on hardware devices, such as a modem or the AT
-  controller.  I'll write an overview for that at a later point, if people are
-  interested. 
+- Someone who could work on new hardware devices, such as a modem. I'll write
+  an overview for that at a later point, if people are interested. Also, help
+  on the interface would be appreciated.
 - Donate. Since Bitcoin is the new cool thing, here's my address:
   `14KBXSoewGzbQY8VoznJ5MZXGxoia8RxC9`
 

src/const.js

@@ -1,4 +1,3 @@
-
 /** @define {boolean} */            
 var DEBUG = true;
 
@@ -30,7 +29,7 @@ var
 
 
 
-/** @const */ LOG_LEVEL = LOG_ALL & ~LOG_DMA & ~LOG_PS2 & ~LOG_DISK & ~LOG_PIT;
+/** @const */ LOG_LEVEL = LOG_ALL & ~LOG_DMA & ~LOG_DISK & ~LOG_PIT;
 ///** @const */ LOG_LEVEL = LOG_OTHER | LOG_PS2;
 ///** @const */ LOG_LEVEL = 0;
 
@@ -47,7 +46,7 @@ var
     ENABLE_HPET = false,
 
     /** @const */
-    ENABLE_ACPI = false;
+    ENABLE_ACPI = true;
 
 var 
 
@@ -146,8 +145,8 @@ PSE_ENABLED = 128,
 
 
 
-/** @const */ LOOP_COUNTER = 4001,
-/** @const */ TIME_PER_FRAME = 20;
+/** @const */ LOOP_COUNTER = 11001,
+/** @const */ TIME_PER_FRAME = 33;
 
 
 var 

src/ide.js

@@ -20,11 +20,15 @@ function IDEDevice(dev, buffer, is_cd, nr)
     {
         this.ata_port = 0x1F0;
         this.irq = 14;
+
+        this.pci_id = 0x1E << 3;
     }
     else
     {
         this.ata_port = 0x1F0;
-        this.irq = 15;
+        this.irq = 14;
+
+        this.pci_id = 0x1F << 3;
     }
 
     // alternate status, starting at 3f4/374
@@ -40,23 +44,35 @@ function IDEDevice(dev, buffer, is_cd, nr)
     this.buffer = buffer;
     this.is_atapi = is_cd;
 
-    this.sector_count = me.buffer.byteLength / this.sector_size;
-
-    if(is_cd)
+    if(buffer)
     {
-        this.head_count = 1;
-        this.sectors_per_track = 0;
+        this.sector_count = me.buffer.byteLength / this.sector_size;
+
+        if(is_cd)
+        {
+            this.head_count = 1;
+            this.sectors_per_track = 0;
+        }
+        else
+        {
+            this.head_count = 1;
+            this.sectors_per_track = 63;
+        }
+
+        this.cylinder_count = me.buffer.byteLength / 
+            this.head_count / (this.sectors_per_track + 1) / this.sector_size;
+
+        dbg_assert(this.cylinder_count === (this.cylinder_count | 0));
     }
     else
     {
-        this.head_count = 1;
-        this.sectors_per_track = 63;
-    }
+        this.sector_count = 0;
 
-    this.cylinder_count = me.buffer.byteLength / 
-        this.head_count / (this.sectors_per_track + 1) / this.sector_size;
+        this.head_count = 0;
+        this.sectors_per_track = 0;
 
-    dbg_assert(this.cylinder_count === (this.cylinder_count | 0));
+        this.cylinder_count = 0;
+    }
 
     this.stats = {
         sectors_read: 0,
@@ -76,7 +92,6 @@ function IDEDevice(dev, buffer, is_cd, nr)
         }
     }
 
-    this.pci_id = 0x1F << 3;
     this.pci_space = [
         0x86, 0x80, 0x20, 0x3a, 0x05, 0x00, 0xa0, 0x02, 0x00, 0x8f, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00,
         this.ata_port & 0xFF | 1,      this.ata_port >> 8, 0x00, 0x00, 

src/misc_instr.macro.js

@@ -132,7 +132,7 @@ function getcf()
 {
     if(flags_changed & 1)
     {
-        return !!((last_op1 ^ (last_op1 ^ last_op2) & (last_op2 ^ last_add_result)) & last_op_size);
+        return +!!((last_op1 ^ (last_op1 ^ last_op2) & (last_op2 ^ last_add_result)) & last_op_size);
     }
     else
     {
@@ -247,7 +247,7 @@ function pusha16()
 
     // make sure we don't get a pagefault after having 
     // pushed several registers already
-    translate_address_write(temp - 15);
+    translate_address_write(get_seg(reg_ss) + temp - 15);
 
     push16(reg16[reg_ax]);
     push16(reg16[reg_cx]);
@@ -263,7 +263,7 @@ function pusha32()
 {
     var temp = reg32s[reg_esp];
 
-    translate_address_write(temp - 31);
+    translate_address_write(get_seg(reg_ss) + temp - 31);
 
     push32(reg32s[reg_eax]);
     push32(reg32s[reg_ecx]);
@@ -277,7 +277,7 @@ function pusha32()
 
 function popa16()
 {
-    translate_address_read(stack_reg[reg_vsp] + 15);
+    translate_address_read(get_seg(reg_ss) + stack_reg[reg_vsp] + 15);
 
     reg16[reg_di] = pop16();
     reg16[reg_si] = pop16();
@@ -291,7 +291,7 @@ function popa16()
 
 function popa32()
 {
-    translate_address_read(stack_reg[reg_vsp] + 31);
+    translate_address_read(get_seg(reg_ss) + stack_reg[reg_vsp] + 31);
 
     reg32[reg_edi] = pop32s();
     reg32[reg_esi] = pop32s();

src/modrm.macro.js

@@ -41,6 +41,9 @@ var modrm_table16 = Array(0xC0),
     modrm_table16[n] = function() { return offset | 0; };
 
 
+#define getsib(mod)\
+    sib_table[read_imm8()](mod)
+
 entry16(0, ds, reg16[reg_bx] + reg16[reg_si])
 entry16(1, ds, reg16[reg_bx] + reg16[reg_di])
 entry16(2, ss, reg16[reg_bp] + reg16[reg_si])
@@ -140,15 +143,6 @@ modrm_resolve32 = function(modrm_byte)
     return modrm_table32[modrm_byte]();
 }
 
-/**
- * @param {boolean} mod
- * @return {number}
- */
-function getsib(mod)
-{
-    return sib_table[read_imm8()](mod);
-}
-
 #undef ds 
 #undef ss 
 

src/pci.js

@@ -176,7 +176,7 @@ function PCI(dev)
 
         if(space)
         {
-            (new Uint8Array(space.buffer))[addr | byte_pos] = byte;
+            //(new Uint8Array(space.buffer))[addr | byte_pos] = byte;
 
             if(byte_pos === 3 && addr >= 0x10 && addr < 0x28)
             {
@@ -189,7 +189,7 @@ function PCI(dev)
                 if(bar)
                 {
                     dbg_assert(!(bar.size & bar.size - 1));
-                    space[addr >> 2] = value & ~(bar.size - 1) | 3;
+                    //space[addr >> 2] = value & ~(bar.size - 1) | 3;
                 }
                 else
                 {