From: Christian Groessler <chris@groessler.org>
Date: Tue, 18 Jun 2013 11:00:51 +0000 (+0200)
Subject: Add indication on the screen of occurring IRQs and NMIs (only for debug version).
X-Git-Tag: V2.15~223^2~91
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=47d16e86a40ebc3ba74f1293419307ea490f03bb;p=cc65

Add indication on the screen of occurring IRQs and NMIs (only for debug version).
NMI handler: set I status bit to original value before interrupt before chaining
to ROM NMI handler.
---

diff --git a/libsrc/atari/shadow_ram_handlers.s b/libsrc/atari/shadow_ram_handlers.s
index 8c4400cbc..206dcfcaf 100644
--- a/libsrc/atari/shadow_ram_handlers.s
+++ b/libsrc/atari/shadow_ram_handlers.s
@@ -4,6 +4,7 @@
 ; Christian Groessler, chris@groessler.org, 2013
 ;
 
+DEBUG	=	1
 
 .if .defined(__ATARIXL__)
 
@@ -132,9 +133,50 @@ ret:	disable_rom
 .endmacro
 
 my_IRQ_han:
+.ifdef DEBUG
+	php
+	pha
+	tya
+	pha
+	ldy	#0
+	lda	(SAVMSC),y
+	clc
+	adc	#1
+	sta	(SAVMSC),y
+	pla
+	tay
+	pla
+	plp
+.endif
 	int_wrap IRQ_save
 
 my_NMI_han:
+.ifdef DEBUG
+	php
+	pha
+	tya
+	pha
+	ldy	#39
+	lda	(SAVMSC),y
+	clc
+	adc	#1
+	sta	(SAVMSC),y
+	pla
+	tay
+	pla
+	plp
+.endif
+; set I bit to interrupted value
+	pha
+	txa
+	pha
+	tsx
+	lda	$103,x
+	pha
+	plp
+	pla
+	tax
+	pla
 	int_wrap NMI_save
 
 my_RESET_han: