Index: vl.c
===================================================================
RCS file: /sources/qemu/qemu/vl.c,v
retrieving revision 1.323
diff -u -r1.323 vl.c
--- vl.c	29 Jul 2007 17:57:25 -0000	1.323
+++ vl.c	1 Aug 2007 15:36:31 -0000
@@ -7828,7 +7828,7 @@
 	    fprintf(stderr, "No valid PXE rom found for network device\n");
 	    exit(1);
 	}
-	boot_device = 'c'; /* to prevent confusion by the BIOS */
+	//boot_device = 'c'; /* to prevent confusion by the BIOS */
     }
 #endif
 
Index: hw/pc.c
===================================================================
RCS file: /sources/qemu/qemu/hw/pc.c,v
retrieving revision 1.81
diff -u -r1.81 pc.c
--- hw/pc.c	6 Jun 2007 16:26:13 -0000	1.81
+++ hw/pc.c	1 Aug 2007 15:36:31 -0000
@@ -197,6 +197,9 @@
     case 'd':
         rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
         break;
+    case 'n':
+        rtc_set_memory(s, 0x3d, 0x04); /* Network boot */
+        break;	
     }
 
     /* floppy type */