X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/2bcaaabf0bbbb0232fe8ffe0a8943a14159852ab..refs/heads/master:/diag.asm

diff --git a/diag.asm b/diag.asm
index 780f5c2..3a3d665 100644
--- a/diag.asm
+++ b/diag.asm
@@ -1,6 +1,8 @@
 	SECTION "a",HOME[$00]
 
-start: jp main
+start:	ld a, $AA
+	ld [$FF51], a
+	jr start
 	
 	section "vbl",HOME[$40]
 	jp vbl
@@ -475,14 +477,14 @@ insntest:
 
 ; Serial port manipulation functions.
 putc:
-	ld c, $50
+	ld c, $53
 	push af
 .waitport:
 	ld a,[c]
-	cp $00
+	and $01
 	jr nz,.waitport
 	pop af
-	ld [c],a
+	ld [$FF52],a
 	ret
 
 puts: