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How to detect finalgrom99 using assembly language ?

fg99

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#1 retroclouds OFFLINE  

retroclouds

    Stargunner

  • 1,601 posts
  • Location:Germany

Posted Tue Dec 26, 2017 8:40 AM

Hoping that Ralph can chime in on this.

 

My question is, if it's possible to detect if there is a finalgrom99 installed ?

That would be intereresting if you'd like to use the more advanced features like writing to RAM/GRAM.



#2 ralphb OFFLINE  

ralphb

    Dragonstomper

  • 565 posts
  • Location:Germany

Posted Fri Jan 5, 2018 6:52 AM

Sorry for not seeing this question earlier ...

 

Just enable RAM or GRAM (by putting R or G into the fourth byte) and see if you can write to the cart space.  If you're not running on the FinalGROM 99, the RAM/GRAM information will be ignored, so you cannot modify values in cart space.



#3 retroclouds OFFLINE  

retroclouds

    Stargunner

  • Topic Starter
  • 1,601 posts
  • Location:Germany

Posted Fri Jan 5, 2018 9:52 AM

Sorry for not seeing this question earlier ...
 
Just enable RAM or GRAM (by putting R or G into the fourth byte) and see if you can write to the cart space.  If you're not running on the FinalGROM 99, the RAM/GRAM information will be ignored, so you cannot modify values in cart space.


Thanks. That sounds like a good idea. Should be easy to implement :-)





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