From 2be7c7c88d278855aea59b146ff73e10c7330027 Mon Sep 17 00:00:00 2001
From: Christian Groessler <chris@groessler.org>
Date: Tue, 14 Jan 2014 13:57:47 +0100
Subject: [PATCH] Always print the mouse cursor, even if coordinates haven't
 changed. This makes sure that the cursor is always visible, even if the
 program has written text to the screen (only valid for non-P/M mouse
 callbacks).

---
 libsrc/atari/mou/atrjoy.s | 11 ++---------
 libsrc/atari/mou/atrst.s  | 23 ++---------------------
 2 files changed, 4 insertions(+), 30 deletions(-)

diff --git a/libsrc/atari/mou/atrjoy.s b/libsrc/atari/mou/atrjoy.s
index 9915a4ff1..2c2d2c178 100644
--- a/libsrc/atari/mou/atrjoy.s
+++ b/libsrc/atari/mou/atrjoy.s
@@ -120,12 +120,8 @@ INSTALL:
         dex
         bpl     @L1
 
-; Be sure the mouse cursor is invisible and at the default location. We
-; need to do that here, because our mouse interrupt handler doesn't set the
-; mouse position if it hasn't changed.
+; Be sure the mouse cursor is invisible and at the default location.
 
-        php
-        sei
         jsr     CHIDE
         lda     XPos
         ldx     XPos+1
@@ -133,7 +129,6 @@ INSTALL:
         lda     YPos
         ldx     YPos+1
         jsr     CMOVEY
-        plp
 
 ; Done, return zero (= MOUSE_ERR_OK)
 
@@ -316,7 +311,7 @@ INFO:   jsr     POS
 
 IOCTL:  lda     #<MOUSE_ERR_INV_IOCTL     ; We don't support ioclts for now
         ldx     #>MOUSE_ERR_INV_IOCTL
-hlprts: rts
+        rts
 
 ;----------------------------------------------------------------------------
 ; IRQ: Irq handler entry point. Called as a subroutine but in IRQ context
@@ -339,8 +334,6 @@ IRQ:
         and     #15                     ; clear joystick #1 bits
         eor     #15
         sta     Temp
-        clc
-        beq     hlprts                  ; no movement, do nothing
 
         jsr     CHIDE
 
diff --git a/libsrc/atari/mou/atrst.s b/libsrc/atari/mou/atrst.s
index 04580f31a..03f9f0b53 100644
--- a/libsrc/atari/mou/atrst.s
+++ b/libsrc/atari/mou/atrst.s
@@ -170,11 +170,8 @@ INSTALL:
         dex
         bpl     @L1
 
-; Be sure the mouse cursor is invisible and at the default location. We
-; need to do that here, because our mouse interrupt handler doesn't set the
-; mouse position if it hasn't changed.
+; Be sure the mouse cursor is invisible and at the default location.
 
-        sei
         jsr     CHIDE
         lda     XPos
         sta     XPosWrk
@@ -186,7 +183,6 @@ INSTALL:
         ldx     YPos+1
         stx     YPosWrk+1
         jsr     CMOVEY
-        cli
 
 ; Install timer irq routine to poll mouse.
 
@@ -470,22 +466,7 @@ IRQ:
         ldx     #MOUSE_BTN_LEFT
 @L0:    stx     Buttons
 
-; Update coordinates if needed
-
-        lda     XPosWrk
-        cmp     XPos
-        bne     @Update
-        lda     XPosWrk+1
-        cmp     XPos+1
-        bne     @Update
-        lda     YPosWrk
-        cmp     YPos
-        bne     @Update
-        lda     YPosWrk+1
-        cmp     YPos+1
-        beq     @Done
-
-@Update:ldx     visible
+        ldx     visible
         beq     @L1
         jsr     CHIDE
 
-- 
2.39.5