How to use cheats for Mame?
Run the cheat on your computer, go the MAME directory, open "Mame.ini," choose "CORE MISC OPTIONS," and finally, change the 0 under "cheat" to a 1. Find the file you downloaded in the MAME directory, click "cheat.7z," and open MAME to test. Go to "Pugsy's Cheats". This is a trusted website with many versions of cheats for MAME. 
What is maclak's Mame cheat file version?
MacLak's MAME 0.35B9 NeoGeo ONLY Cheat File Version 1.10.1290 (Upload Date: 28th March 1999)
Why can’t I use a DAT file on Mame?
By keeping the cheat.7z intact, the system will consider that the cheat folder (keeping it in the same folder as your EXE file). In short, the .DAT file will not function on MAME versions 0.126 or later. If you are getting any cheats at all to show on a later build, it is from your cheat.7z archive, not the .dat file.
How do I enable Mame on Windows 10?
Allowing MAME for cheats Click on the Windows logo on the bottom-left side of your computer screen. Click "Run", which will open up the run executable. Once you've done that, type in "CMD" and press "OK". Type in "Cd (MAME directory)" and press enter. No quotation marks. Type in "Mame -cc" to create the custom configuration file.