4 player mame2003 and Capt America and Avengers

[edm203]

I'm looking all over in the retroarch menu to enable 4 players on this rom with lr-mame2003. Can someone point towards me towards the right direction so I can use 4 controllers with my friends?

Pi Model or other hardware: Pi3B
Power Supply used: 2.5 amp power supply
RetroPie Version Used: 4.1
Built From: Premade from Retropie website
USB Devices connected: 4x ibuffalo controllers
Controller used:
Error messages received:
Log found in /dev/shm/runcommand.log (if relevant):
Guide used: (Mention if you followed a guide)
File: Captain America and The Avengers (Asia Rev 1.4) ROM
Emulator: lr-mame2003
Attachment of config files: (PLEASE USE PASTEBIN.COM FOR LARGE LOGS)
How to replicate the problem:

[AlexMurphy]

@edm203 That is not a 4 player ROM. I ve checked 2 others UK rev1.4 - only 2 players & Asia rev1.9 also only 2 players. There are 6 in total in the 0.78 romset. Check the other 3 and see if they are 4 player ROMs. There is no way to "enable" it in a 2 player ROM, you just need the correct 4 player ROM. It might not even be in the 0.78 set.
EDIT: I'm totally wrong. See other post.

[AlexMurphy]

@edm203 Sorry. I stand corrected! After looking at this further you actually CAN enable 4 players. In the game press TAB to bring up the MAME menu. Select Dip Switches Highlight Max Playersand press Right to change to 4 players. Return to main menu and reset the game. It will now reload as the 4 player version.

[edm203]

Thanks Alex! I just did that and it worked!