Create a correct multirom on Sega MegaDrive (Genesis)

Discussion of development of software for any "obsolete" computer or video game system. See the WSdev wiki and ObscureDev wiki for more information on certain platforms.
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Online
Posts: 12
Joined: Tue Aug 20, 2019 12:33 pm

Create a correct multirom on Sega MegaDrive (Genesis)

Post by Online »

Hello everybody!
Faced such a problem - you need to correctly assemble a multi-game from two Flashback and Another World games. How to do it correctly for 27C322 ? On both rums, Checksum is ok. Swap to do later or after merging? Do I need to somehow expand the rums and how to glue them correctly?
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Create a correct multirom on Sega MegaDrive (Genesis)

Post by lidnariq »

Don't post copyrighted material here, unless it's published available under a permissive license.

As far as your actual question ... connect the ROM's highest address line to a switch. Pad both games to 2MB. Concatenate them.
Online
Posts: 12
Joined: Tue Aug 20, 2019 12:33 pm

Re: Create a correct multirom on Sega MegaDrive (Genesis)

Post by Online »

lidnariq wrote: Sat Jun 19, 2021 1:39 pm Don't post copyrighted material here, unless it's published available under a permissive license.

As far as your actual question ... connect the ROM's highest address line to a switch. Pad both games to 2MB. Concatenate them.
Please tell me step by step how to connect them correctly (rom 1 +rom 2) Thank you.
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