Mixed regions changes error (only with LUA plugin)

[fedekrum]

Hi !!

This is for "frogger.zip" using mame0229-64bit

Why cheats "rom test", "audio test" and "pixels test " below work using the LUA plugin but the mix of all of them in "mixed test" do not?
Can a cheat have mixed region changes on the same cheat under LUA plugin?

Code: Select all

<mamecheat version="1">
<!--  Frogger ROM frogger.zip  -->
 
  <cheat desc="rom test">
    <script state="run">
      <!--  Frogger ROM Patch - frsm3.7  -->
      <action>maincpu.mb@2FFF=00</action>
    </script>
  </cheat>

  <cheat desc="audio test">
    <script state="run">
      <!--  Frogger ROM Patch - frogger.609  -->
      <action>audiocpu.mb@88C=00</action>
    </script>
  </cheat>

  <cheat desc="pixels test">
    <script state="run">
      <!--  Frogger ROM Patch - frogger.606  -->
      <action>gfx1.mb@A63=0</action>
    </script>
  </cheat>
  
  <cheat desc="mixed test">
    <script state="run">
      <action>maincpu.mb@2FFD=C9</action>
      <action>audiocpu.mb@88C=00</action>
      <action>gfx1.mb@A63=0</action>
    </script>
  </cheat>

</mamecheat>

The same cheat works if activated using

Code: Select all

./mame -cheat 

It has also been reported at https://github.com/mamedev/mame/issues/12757

[jman]

No error in 0.269 (the latest MAME version for now).


Indeed, error happens in 0.229 with the following message when you try to activate "mixed test" code.

error cheat script error: "mixed test" [string "mixed testrun"]:1: attempt to index a nil value (global 'audiocpum')

But this error seems to be fixed in the newest version.

So try to update both MAME and plugin.