Results 1 to 3 of 3

Thread: Two-ROM Genesis Repros (PSIV)

  1. #1
    Join Date
    Jun 2014
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default Two-ROM Genesis Repros (PSIV)

    I've tried to find this out for myself, but haven't had any success. Any ideas appreciated! I PM'd Jazzmarazz but figured a public post might be best, even though the forum seems a graveyard now.

    I want to put my PSIV relocalization onto on a real Japanese cart for myself and the folks who helped me.

    PSIV is 3MB/24mB and has 2 ROMs on the board.

    1. For a 2-ROM board, do you just program a M27c160 (bottom one, 2MB) and then a M27c800 (top one, 1MB), respectively? Following all the normal programming instructions (byteswap both, program each bank 1 by 1 in 512KB chunks, etc.)?

    2. If yes to the above, can I use 2 M27c160 chips and just fill the rest of the 2nd chip?

    I've converted a few JP-to-Eng carts successfully but I can't find an answer anywhere about 2-ROM Genesis games.

    Any advice?

  2. #2
    Join Date
    Mar 2014
    Location
    ROYAL OAK
    Posts
    1,180
    Thanks
    149
    Thanked 1,243 Times in 535 Posts
    EP Points
    11930

    Default

    2 rom Genesis is unlike other systems. To my understanding, all even numbered lines of code sit on one eeprom, all odd numbers on the other

  3. #3
    Join Date
    Jun 2014
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Default

    Oh hey, actually, Jazzmarazz helped me out via PM -- turns out doing a 2-ROM game is nothing special at all for the Genesis.

    You just program each bank sequentially as if you were doing a single 4MB ROM. You don't even have to autofill the last bank with junk data or anything.

    So I got it to work. It was just frustring that this info wasn't listed anywhere. Thanks!

Similar Threads

  1. Have Two Roms to Share With Site...
    By lovablejoe in forum Comments/Suggestions/Broken Links & Download Problems
    Replies: 7
    Last Post: 17th-August-2005, 19:28
  2. a very small N64 Rom/Genesis request :)
    By TobyNY in forum ROM & ISO Requests
    Replies: 1
    Last Post: 25th-July-2005, 16:44
  3. Street Fighter II Alpha/Street Fighter 0 Two Rom
    By FlameDangerJame in forum Everything Emulation
    Replies: 8
    Last Post: 30th-July-2003, 02:51
  4. Street Fighter II Alpha/Street Fighter 0 Two Rom
    By FlameDangerJame in forum Free 4 All
    Replies: 1
    Last Post: 29th-July-2003, 06:25
  5. Sega Genesis roms....
    By Hipoccolos in forum ROM & ISO Requests
    Replies: 1
    Last Post: 27th-January-2002, 02:24

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About Us

We are the oldest retro gaming forum on the internet. The goal of our community is the complete preservation of all retro video games. Started in 2001 as EmuParadise Forums, our community has grown over the past 18 years into one of the biggest gaming platforms on the internet.

Social