another monitor integration bugfix, added some debug code

src/mon_m65/mon_debug.s

@@ -0,0 +1,105 @@
+
+;
+; Helper code for debugging the monitor
+;
+
+; XXX disable this code once the monitor integration is complete
+
+
+DBG_print_long_pc:
+
+	php
+	pha
+	phx
+	phy
+	phz
+
+	jsr PRIMM
+	!pet $0D, "long pc : ", 0
+
+	lda Long_PC+3
+	jsr Print_Hex
+	lda Long_PC+2
+	jsr Print_Hex
+	lda Long_PC+1
+	jsr Print_Hex
+	lda Long_PC+0
+	jsr Print_Hex
+
+	jsr PRIMM
+	!pet "  addr mode : ", 0
+
+	lda Adr_Mode
+	jsr Print_Hex
+
+	jsr PRIMM
+	!pet "  ::  ", 0
+
+	plz
+	ply
+	plx
+	pla
+	plp
+
+	rts
+
+DBG_print_hex:
+
+	php
+	pha
+	phx
+	phy
+	phz
+
+	pha
+	jsr PRIMM
+	!pet $0D, "hex     : ", 0	
+	pla
+
+	jsr Print_Hex
+
+	plz
+	ply
+	plx
+	pla
+	plp
+
+	rts
+
+DBG_print_CP1:
+
+	php
+	pha
+	phx
+	phy
+	phz
+
+	jsr PRIMM
+	!pet $0D, "checkpoint 1", 0	
+
+	jmp DBG_END
+
+DBG_print_CP2:
+
+	php
+	pha
+	phx
+	phy
+	phz
+
+	jsr PRIMM
+	!pet $0D, "checkpoint 2", 0	
+
+	; FALLTROUGH
+
+DBG_END:
+
+	plz
+	ply
+	plx
+	pla
+	plp
+
+	rts
+
+