bad checksum when starting certain roms.. same roms work fine in older version..

[greenday8616]

when I try to run turtles in time or the simpsons and the bootup screen shows which would check the original cab when it gets to 12c it says bad in red writing and freezes.. the issue is that the rom is fine.. using an old verison of mame32 but of these work.. when i'm using the newest commandline release they do this... i'm sure others do it too.. any advice??

[greenday8616]

also i forgot to say that f2 and f3 does not work it just goes to a screen in red saying bad eeprom.. it happens with ninja turtles and sunset riders too

[Thenasty]

http://mamedev.org/devwiki/index.php/FAQ:Games



Make it your first stop. It answers lots of questions that been ask millions of time

[Hoopz]

Do your roms match the version of mame that you're using?

[Tafoid]

when I try to run turtles in time or the simpsons and the bootup screen shows which would check the original cab when it gets to 12c it says bad in red writing and freezes.. the issue is that the rom is fine.. using an old verison of mame32 but of these work.. when i'm using the newest commandline release they do this... i'm sure others do it too.. any advice??

You fail to indicate which version you are using now?  If it's 0.136, there was a problem with all 8-bit eeproms in games - causing the auto-initialization or manual F2+F3 processes in most Konami games to work incorrectly in that one version.
http://www.mametesters.org/view.php?id=3630

You can use an earlier version (like 0.135) to create them instead or anything 0.136u1 or greater should work as expected.

[greenday8616]

i have .0136b.. i guess if i just downgrade to the second newest version i should be straight?

[greenday8616]

sunset riders still isnt working.. weird it worked with turtles simpsons and x men but not that

[u_rebelscum]

sunset riders still isnt working.. weird it worked with turtles simpsons and x men but not that

Let me guess: You're running one of the clones, right?

MameFAQ (roms) hints at the cause, and if you look at MAWS, you'll see that all clones had a rom set change in 0.133.  IOW, you need to update that game's romset.