78081g503.ic655 Not Found File

: Ensure your ROM version matches your MAME executable version (e.g., v0.287). MAME updates frequently change file requirements.

If missing, 78081g503 may be defined but not actually compiled into view ic655 . 78081g503.ic655 not found

Common fixes mapped to likely causes

Update your BIOS files ( coh3002c.zip and coh1002m.zip ) to match the version of MAME you are running (MAME 0.181+). : Ensure your ROM version matches your MAME

If the file is a system-level component (less likely but possible): 78081g503.ic655 not found