78081g503.ic655 Not Found Official

This error usually pops up when you're trying to run arcade games on the or hardware (like Street Fighter EX or ) using MAME .

In many cases, if you have the rest of the ROM set and the parent BIOS (like zn1.zip or zn2.zip ), the game might still boot. MAME often uses high-level emulation to "fake" the function of missing security chips.

To fix the problem, we first need to deconstruct the error message. The string 78081g503.ic655 appears to be a filename with a non-standard extension ( .ic655 ). 78081g503.ic655 not found

: The file may be registered incorrectly. Right-click > Properties. If the file size is 0 KB, it is corrupted.

This file is a ROM component specifically associated with the hardware, as well as the Taito G-NET system. These arcade boards powered several iconic titles from the late 90s, including: Street Fighter EX series Rival Schools Star Gladiator This error usually pops up when you're trying

In most cases, a clean reinstallation of the originating software will restore the missing component. For enterprise or industrial environments where reinstallation is not trivial, extracting the file from a backup or original installer provides a more targeted fix. If all else fails, the software vendor remains your best resource.

Last updated: October 2025. This article is maintained for technical reference. If you have additional information about the .ic655 format or the string 78081g503 , please contribute via the comments section below. To fix the problem, we first need to

: If you are using an older ROM set with a newer version of MAME, you may be missing files that were recently discovered or required by the developers for better accuracy.

Ensure these files are present in the same directory as your game ROMs. Do unzip them. 2. Understand "No Good Dump Known" In many versions of MAME, this file is flagged as "NOT FOUND (NO GOOD DUMP KNOWN)"

Reboot and check if the error persists.

If you are encountering this error on a personal computer running Windows, follow this troubleshooting hierarchy to resolve the issue.