From ce217382fc1618237d321ec66b5c2934710ace6b Mon Sep 17 00:00:00 2001
From: Peter Ferrie <peter.ferrie@gmail.com>
Date: Sat, 20 Aug 2022 20:56:46 -0700
Subject: [PATCH] make Viper Patrol cheat optional

---
 src/prelaunch/viper.patrol.a | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/prelaunch/viper.patrol.a b/src/prelaunch/viper.patrol.a
index ad1719d29..e669f84cb 100644
--- a/src/prelaunch/viper.patrol.a
+++ b/src/prelaunch/viper.patrol.a
@@ -21,6 +21,10 @@ callback1
          lda   #0
          sta   $56
          jsr   $BDAC      ; decompress
+         +READ_RAM2_NO_WRITE
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
          lda   $1B82
          cmp   #$4C
          bne   +
@@ -33,7 +37,8 @@ callback1
          lda   #>callback3
          sta   $1BCB
 +
-         +DISABLE_ACCEL
+         jsr   DisableAccelerator
+         +READ_ROM_NO_WRITE
 
          lda   #0
          rts