diff --git a/Doc/RomWBW Architecture.pdf b/Doc/RomWBW Architecture.pdf
index dae486de..3b30b737 100644
Binary files a/Doc/RomWBW Architecture.pdf and b/Doc/RomWBW Architecture.pdf differ
diff --git a/Source/Apps/IntTest.asm b/Source/Apps/IntTest.asm
index 3bb978a2..d1ed6354 100644
--- a/Source/Apps/IntTest.asm
+++ b/Source/Apps/IntTest.asm
@@ -604,6 +604,7 @@ m1int:
 	dec	a               ; decrement
 	ld	(count),a       ; and save
 m1int1:
+	xor	a		; signal int has NOT been handled
 	; follow the chain...
 	ld	hl,(chain)	; get chain adr
 	jp	(hl)		; go there
diff --git a/Source/Doc/RomWBW Architecture.docx b/Source/Doc/RomWBW Architecture.docx
index 8aacad68..4ac0b0e1 100644
Binary files a/Source/Doc/RomWBW Architecture.docx and b/Source/Doc/RomWBW Architecture.docx differ