| Option Category | # # CORE DEBUGGING OPTIONS # |
| Description | This option outputs a file called error.log to the system debugger. Like the -log option it's only used for developers. |
| Full Command | -oslog |
| Alt. Command | none |
| Reverse Command | -nooslog |
| Example | mame64.exe pacman -oslog |
| mame.ini Command | oslog |
| Command Default | 0 |
| Argument Format | <boolean> |