From ee66ff085fc9bec99bffd81353ea877e3c3ab4e3 Mon Sep 17 00:00:00 2001
From: Stefan Eilers <stefan.eilers@intelligentmobiles.com>
Date: Wed, 21 Feb 2024 21:49:09 +0100
Subject: [PATCH] Switch "zero page" to $1600 - $16ff

---
 mos-platform/mega65/CMakeLists.txt | 4 ++++
 mos-platform/mega65/unmap-basic.S  | 8 ++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/mos-platform/mega65/CMakeLists.txt b/mos-platform/mega65/CMakeLists.txt
index 0f9ad6e75..00a36b6e1 100644
--- a/mos-platform/mega65/CMakeLists.txt
+++ b/mos-platform/mega65/CMakeLists.txt
@@ -16,3 +16,7 @@ add_platform_object_file(mega65-unmap-basic unmap-basic.o unmap-basic.S)
 
 add_platform_library(mega65-c kernal.S)
 target_include_directories(mega65-c BEFORE PUBLIC .)
+
+target_compile_options(mega65-unmap-basic PRIVATE
+    -mcpu=mos45gs02
+)
diff --git a/mos-platform/mega65/unmap-basic.S b/mos-platform/mega65/unmap-basic.S
index 4d813f1d7..12f962786 100644
--- a/mos-platform/mega65/unmap-basic.S
+++ b/mos-platform/mega65/unmap-basic.S
@@ -15,6 +15,9 @@
         ldx #$44 ; unmap all C65 ROMs except $e000-$ffff
         stx $d030
 
+        lda #$16 ; Switch zero page to $1600 - $16ff
+        tab
+
 
 ; restore BASIC ROM after all other exit handlers have completed
 .section .fini.990,"axR", @progbits
@@ -24,7 +27,8 @@
         ; restore C65 ROMs to as before
         ldx #$64
         stx $d030
+
+        lda #$00 ; Switch zero page back to default
+        tab
         
 	cli
-
-