diff -r 106bc46793ca hw/ide.c
--- a/hw/ide.c	Mon Aug 27 16:20:33 2007 -0400
+++ b/hw/ide.c	Mon Aug 27 16:27:28 2007 -0400
@@ -1914,6 +1914,8 @@ static void ide_ioport_write(void *opaqu
             case 0x67: /* NOP */
             case 0x96: /* NOP */
             case 0x9a: /* NOP */
+	    case 0x42: /* enable Automatic Acoustic Mode */
+	    case 0xc2: /* disable Automatic Acoustic Mode */
                 s->status = READY_STAT | SEEK_STAT;
                 ide_set_irq(s);
                 break;
@@ -1952,12 +1954,16 @@ static void ide_ioport_write(void *opaqu
 	    s->status = READY_STAT;
             ide_set_irq(s);
             break;
+        case WIN_STANDBY:
+        case WIN_STANDBY2:
 	case WIN_STANDBYNOW1:
         case WIN_STANDBYNOW2:
         case WIN_IDLEIMMEDIATE:
         case CFA_IDLEIMMEDIATE:
         case WIN_SETIDLE1:
         case WIN_SETIDLE2:
+        case WIN_SLEEPNOW1:
+        case WIN_SLEEPNOW2:
 	    s->status = READY_STAT;
             ide_set_irq(s);
             break;