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standard in some guides

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wiki-rtd/docs/wiki_emulator_guides/mame/mame-guide.md
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@ -2,30 +2,17 @@
<img src="../../../wiki_images/logos/mame-logo.png" width="180">
## Where to put the games
## Where to put the games?
Games that you want to run with MAME should be put under the `retrodeck/roms/mame/` directory.
## Enable cheats
## What file formats are supported?
RetroDECK already ships the cheat file from [Pugsy's Cheats](https://www.mamecheat.co.uk/) as part of the cheat folder.
Too many to list here but generally `.zip` files are the recommended format.
To enable cheats open MAME via the Configurator (we plan to make this easier later).
## Does MAME require BIOS or Firmware?
In the MAME interface go to -> `General Settings` -> `Miscellaneous Options` -> `Cheats` and toggle it to `On` -> go back and click `Save Settings` and leave MAME.
When you launch a game open the `Quick Menu` and go to the `Cheat` menu to toggle cheats for that game.
## Applying effects such as Shaders and Scanlines
First read up on BGFX effects on [BGFX MAMEdev](https://docs.mamedev.org/advanced/bgfx.html)
We
1. Go to `~/.var/app/net.retrodeck.retrodeck/config/mame/ini`
2. Open the `mame.ini` with your text editor of choice.
3. Find `OSD VIDEO OPTIONS` and edit the value: `video` from `opengl` to `bgfx`.
4. Find `GFX POST-PROCESSING OPTIONS` and edit the value: `bgfx_screen_chains` fron `nothing` to `what ever value you want` from the BGFX link. Example value from MAME: `bgfx_screen_chains`: `crt-geom`,`pillarbox_left_horizontal`,`pillarbox_right_horizontal`.
Yes, but in most cases the firmware or BIOS is bundled inside the games `.zip` with the game files.
## MAME Standalone Folders
@ -181,3 +168,25 @@ You can always reset via the configurator if you mess things up.
**Versus**
`~/.var/app/net.retrodeck.retrodeck/data/mame/assets/versus`
## How-to enable cheats?
RetroDECK already ships the cheat file from [Pugsy's Cheats](https://www.mamecheat.co.uk/) as part of the cheat folder.
To enable cheats open MAME via the Configurator (we plan to make this easier later).
In the MAME interface go to -> `General Settings` -> `Miscellaneous Options` -> `Cheats` and toggle it to `On` -> go back and click `Save Settings` and leave MAME.
When you launch a game open the `Quick Menu` and go to the `Cheat` menu to toggle cheats for that game.
## Applying effects such as Shaders and Scanlines
First read up on BGFX effects on [BGFX MAMEdev](https://docs.mamedev.org/advanced/bgfx.html)
We
1. Go to `~/.var/app/net.retrodeck.retrodeck/config/mame/ini`
2. Open the `mame.ini` with your text editor of choice.
3. Find `OSD VIDEO OPTIONS` and edit the value: `video` from `opengl` to `bgfx`.
4. Find `GFX POST-PROCESSING OPTIONS` and edit the value: `bgfx_screen_chains` fron `nothing` to `what ever value you want` from the BGFX link. Example value from MAME: `bgfx_screen_chains`: `crt-geom`,`pillarbox_left_horizontal`,`pillarbox_right_horizontal`.