While the ROMs (the program code) are tiny (kilobytes or megabytes), the CHDs (the game data) are massive (hundreds of megabytes to several gigabytes). Version 0.223 required CHD version 5. If you try to use a CHD from MAME 0.200 with MAME 0.223, it will fail checksum verification.
Disclaimer: MAME is emulation software. ROMs are copyrighted material. Only download ROMs for games you physically own, or use the set for homebrew development. mame 0.223 romset
You want a "frozen" set that works perfectly with older frontends (like EmulationStation or RetroPie 4.7). Many arcade cabinets running Raspberry Pi 4 or older PCs use 0.223 because it is the last version that runs smoothly on ARMv8 chips without requiring 64-bit-only instructions. How to Verify Your Set Because ROMs change between versions (files are renamed, re-dumped, or marked as "bad"), you cannot simply drop a 0.200 ROM into 0.223. While the ROMs (the program code) are tiny
