From: cpg <cpg@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sun, 3 Dec 2000 21:39:12 +0000 (+0000)
Subject: added mousemem constructor
X-Git-Tag: V2.12.0~3005
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=86e8c03001ecc1b8c522befccc03fc233088d03e;p=cc65

added mousemem constructor


git-svn-id: svn://svn.cc65.org/cc65/trunk@535 b7a2c559-68d2-44c3-8de9-860c34a00d81
---

diff --git a/libsrc/atari/mouse.s b/libsrc/atari/mouse.s
index 1592b411a..172e2ad69 100644
--- a/libsrc/atari/mouse.s
+++ b/libsrc/atari/mouse.s
@@ -14,8 +14,9 @@
 	.export	_mouse_init, _mouse_done, _mouse_box
 	.export _mouse_show, _mouse_hide, _mouse_move
 	.export _mouse_buttons
+	.constructor	mousemem
 
-	.import popa,popax,mouse_pm0
+	.import popa,popax
 
 	.include "atari.inc"
 
@@ -35,6 +36,23 @@ pmsize	= 16		; y size pm shape
 xinit	= defxmin	; init. x pos.
 yinit	= defymin	; init. y pos.
 
+;--------------------------------------------------------------------
+; reserve memory for the mouse pointer
+
+mousemem:
+	lda	APPMHI+1
+	and	#%11111000	; make 2k aligned
+	sec
+	sbc	#%00001000	; reserve 2k
+	tax
+	adc	#3		; add 4 (C = 1)
+	sta	mouse_pm0
+	lda	#0
+	sta	APPMHI
+	stx	APPMHI+1
+	rts
+	
+
 ;--------------------------------------------------------------------
 ; Initialize mouse routines
 ; void __fastcall__ mouse_init (unsigned char port, unsigned char sprite, unsigned char type);
@@ -533,3 +551,5 @@ mouse_on:
 	.res 1
 port_nr:
 	.res 1
+mouse_pm0:
+	.res 1