From 314984aae459cb548e37945aab89d3cb92f67bd2 Mon Sep 17 00:00:00 2001
From: cpg <cpg@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Mon, 23 Nov 2009 21:21:49 +0000
Subject: [PATCH] save 3 bytes, patch by Daniel Serpell

git-svn-id: svn://svn.cc65.org/cc65/trunk@4476 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 libsrc/atari/open.s | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/libsrc/atari/open.s b/libsrc/atari/open.s
index ea3ae543b..927c1953c 100644
--- a/libsrc/atari/open.s
+++ b/libsrc/atari/open.s
@@ -27,12 +27,11 @@
 
 .proc	_open
 
-	cpy	#4		; correct # of arguments (bytes)?
+	dey			; parm count < 4 shouldn't be needed to be checked
+	dey			;	(it generates a c compiler warning)
+	dey
+	dey
 	beq	parmok		; parameter count ok
-	tya			; parm count < 4 shouldn't be needed to be checked
-	sec			;	(it generates a c compiler warning)
-	sbc	#4
-	tay
 	jsr	addysp		; fix stack, throw away unused parameters
 
 parmok:	jsr	findfreeiocb
-- 
2.39.5