From a15c924d5399f3bade7ce2983547795d5f8292c6 Mon Sep 17 00:00:00 2001
From: giomba <giomba@glgprograms.it>
Date: Wed, 5 Sep 2018 22:03:20 +0200
Subject: [PATCH] Added skeleton for multiplatform development

Just added some preprocessor instructions and some sample code to show
how to use them. This should be useful for the future port on C16.
---
 Makefile  |  7 +++++--
 snake.asm | 13 +++++++++++++
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index fa68991..56a8051 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,5 @@
-all:
-	dasm snake.asm -osnake.prg
+64:
+	dasm snake.asm -DSYSTEM=64 -osnake.prg
+
+16:
+	dasm snake.asm -DSYSTEM=16 -osnake.prg
diff --git a/snake.asm b/snake.asm
index a48985a..6220379 100644
--- a/snake.asm
+++ b/snake.asm
@@ -1,5 +1,14 @@
     processor 6502
 
+; Platform specific code
+; Code yet to be developed, example to use:
+; ----------------------------------------------------------------------
+#if SYSTEM = 64
+	; Commodore64 specific code
+#else
+	; Commodore16 specific code
+#endif
+
 ; Zero page utilities
 ; ----------------------------------------------------------------------
 
@@ -104,7 +113,11 @@ gameoverString:
     BYTE "GAME IS OVER"
     BYTE #0
 intro0string:
+#if SYSTEM = 64
     BYTE "   SNAKE BY GIOMBA   "
+#else
+	BYTE "  SNAKE16 BY GIOMBA  "
+#endif
     BYTE #0
 intro1string:
     BYTE " PRESS SPACE TO PLAY "