From 51f6dac0e8bba0c4d8ac1cfe689504e4c01066b9 Mon Sep 17 00:00:00 2001
From: Vince Weaver <vince@deater.net>
Date: Sun, 30 May 2021 21:13:26 -0400
Subject: [PATCH] pt3_lib: make apple iic support conditional

---
 music/pt3_lib/pt3_lib_mockingboard_detect.s |  2 ++
 music/pt3_lib/pt3_lib_mockingboard_setup.s  |  2 ++
 music/pt3_lib/pt3_test.s                    | 11 +++++++++++
 3 files changed, 15 insertions(+)

diff --git a/music/pt3_lib/pt3_lib_mockingboard_detect.s b/music/pt3_lib/pt3_lib_mockingboard_detect.s
index 925be47f..8b0857c5 100644
--- a/music/pt3_lib/pt3_lib_mockingboard_detect.s
+++ b/music/pt3_lib/pt3_lib_mockingboard_detect.s
@@ -39,6 +39,7 @@ mockingboard_detect:
 	; I get the impression the Mockingboard 4c activates
 	; when you access any of the 6522 ports in Slot 4
 
+.ifdef PT3_ENABLE_APPLE_IIC
 	lda	APPLEII_MODEL
 	cmp	#'C'
 	bne	not_iic
@@ -49,6 +50,7 @@ mockingboard_detect:
 
         sta	MOCK_6522_DDRA1
 	sta	MOCK_6522_T1CL
+.endif
 
 not_iic:
 	lda	#$00
diff --git a/music/pt3_lib/pt3_lib_mockingboard_setup.s b/music/pt3_lib/pt3_lib_mockingboard_setup.s
index ff563546..2f00bc4a 100644
--- a/music/pt3_lib/pt3_lib_mockingboard_setup.s
+++ b/music/pt3_lib/pt3_lib_mockingboard_setup.s
@@ -170,6 +170,7 @@ clear_ay_end:
 	;=============================
 mockingboard_setup_interrupt:
 
+.ifdef PT3_ENABLE_APPLE_IIC
 	lda	APPLEII_MODEL
 	cmp	#'C'
 	bne	done_iic_hack
@@ -216,6 +217,7 @@ write_rom_loop:
 	lda	#$EA			; nop out the "lda $45" in the irq handler
 	sta	interrupt_smc
 	sta	interrupt_smc+1
+.endif
 
 done_iic_hack:
 
diff --git a/music/pt3_lib/pt3_test.s b/music/pt3_lib/pt3_test.s
index 11bac7b9..a1998b04 100644
--- a/music/pt3_lib/pt3_test.s
+++ b/music/pt3_lib/pt3_test.s
@@ -20,6 +20,12 @@ PT3_LOC = song
 ; PT3_USE_ZERO_PAGE = 1
 
 
+; Comment this to disable Apple IIc support which will free a small amount
+; of room
+
+PT3_ENABLE_APPLE_IIC = 1
+
+
 	;=============================
 	; Setup
 	;=============================
@@ -43,7 +49,9 @@ pt3_setup:
 	; IRQ setup is different on IIc
 	; You can possibly skip this if you only care about II+/IIe
 
+.ifdef PT3_ENABLE_APPLE_IIC
 	jsr	detect_appleii_model
+.endif
 
 	;=======================
 	; Detect mockingboard
@@ -208,7 +216,10 @@ found_message:		.asciiz "FOUND SLOT#4"
 ;routines
 ;=========
 
+.ifdef PT3_ENABLE_APPLE_IIC
 .include	"pt3_lib_detect_model.s"
+.endif
+
 .include	"pt3_lib_core.s"
 .include	"pt3_lib_init.s"
 .include	"pt3_lib_mockingboard_setup.s"