Re: [Etherboot-developers] I've fixed the problem with net booting dos with PXE to EB to DOS

[<ke...@us...>]

>Here is the code to fixed the problem with net booting dos with PXE to EB to 
>DOS.  The line numbers lists are from the original code.

Thanks. I was hoping for a diff -u, but thankfully there isn't too much
to patch.  Here's the result, could you tell me if this is right?
Comments, Vasil?

--- ../../etherboot-5.0.8/src/loader.S	2002-01-29 17:44:09.000000000 +1100
+++ ./loader.S	2002-12-14 22:51:54.000000000 +1100
@@ -209,6 +209,7 @@
 pnpentry:
 	movw	$0,%ax
 #else /* PXELOADER */
+#define	PXENV_STOP_UNDI		0x15
 #define PXENV_UNDI_SHUTDOWN	0x05
 #define PXENV_UNLOAD_STACK	0x70
 	jmp	startpxe
@@ -242,6 +243,8 @@
 #endif
 	.ascii	"\r\n"
 hellomsgend: 
+pxe_stop_undi_pkt:
+	.word	0
 pxe_undi_shutdown_pkt:
 	.word	0
 pxe_unload_stack_pkt:
@@ -321,6 +324,11 @@
 	lcall	*%cs:(PXEEntry-_start)
 	add	$6, %sp
 	pushw	%cs
+	pushw	$pxe_stop_undi_pkt
+	pushw	$PXENV_STOP_UNDI
+	lcall	*%cs:(PXEEntry-_start)
+	add	$6,%sp
+	pushw	%cs
 	pushw	$pxe_unload_stack_pkt
 	pushw	$PXENV_UNLOAD_STACK
 	lcall	*%cs:(PXEEntry-_start)
@@ -367,15 +375,15 @@
 	mov	%bl, %al
 	shr	$4, %al
 	clc
-	daa
-	cmp	$9, %al
-	sbb	$0xcf, %al
+	cmp	$10, %al	/* These three lines written by Norbert Juffa <nor...@am...> */
+	sbb	$0x69, %al
+	das
 	mov	%al, pxeKmsg-_start+3
 	mov	%bl, %al
 	and	$0x0f, %al
-	daa               /* no carry here */
-	cmp	$9, %al
-	sbb	$0xcf, %al
+	cmp	$10,%al
+	sbb	$0x69, %al
+	das
 	mov	%al, pxeKmsg-_start+4
 	movw	$0x0a0d, pxemsg-_start   /* "\r\n" */
 	/* \end{hacked assembly} */

>Is anyone else already working on an Etherboot UNDI driver?  I am interested 
>in working on one, but probably won't be able to start for a while.

Don't let that hold you back. Far more people say they are going to do
something than act.

Thanks again.