Top Gun: Top Gun (Japan) MMC5 Patch Nintendo Entertainment System

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This is an Mapper Conversion hack for Top Gun (japan) ROM from UNROM to MMC5.

Features:


  • Expansion RAM ($5C00-$5FFF, read/write) CPU
    $6000-$7FFF: 8 KB switchable PRG RAM bank
    Bankswitching included. Readme file for more info.
    Extended RAM mode ($5104)


  • Read the Readme for changes in this version v1.2

    Note:

    This patch only works for:


  • Japan Version


  • This patch does not work for:







  • Note: The author have tested most of the emulators but doesn’t work well with Nintendulator, RockNES and VirtuaNES.

    Now works with BizHawk and Mesen.

    Top Gun (Japan) Mapper Conversion
    From UNROM to MMC5 (from UNROM to Mapper 5)
    by Dracula X

    RELEASE DATE: August 16, 2019
    Last Modified: August 18, 2019
    TIME SPAN FROM START TO FINISH: 1 Day

    I have expand the ROM so hackers can add more new codes in the hardwired bank.

    Bankswitch:
    To use it, all you have to do is select a bank and jump to it.

    LDA bank_number
    JSR $FFB0

    You can also use Nflate from http://www.romhacking.net/ Utilities to expand the ROM up to 512kb.

    You can now use free RAM space at $5c00 to 5fff and $6000 to $7fff for cool or new stuff.

    Bankswitching:
    to bankswitch from $8000 - $Bfff and from $C000 - $ffff, here's how to do it:

    LDA bank_number
    JSR $FFB0
    JMP New Location

    or

    LDA bank_number
    JSR $FFB0
    RTS

    New location would be $8000 or $A000 etc... Bank 08 would be at $20010.

    Credits:
    Rockman: for info on how to convert the mapper!
    Disch: for his mapper docs!

    Have fun!

    This patch only works for:
    Japan Version

    This patch does not work for:
    US Revision 0
    US Revision 1
    Europe Version

    Changes for this version 1.2:
    Change all $FF's to $00's in the expanded ROM area from location $20000

    Changes for this version 1.1:
    Expand the ROM so hackers can use all the free space in the hardwired bank.
    Fixed: I changed $4c JMP to $20 JSR because it was wrong at location $1ef34.


    Non Supported Emulators:
    Nintendulator
    RockNES
    VirtuaNES

    Database match: Top Gun (Japan)
    Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
    File SHA-1: 57BAA06E59D6F07A0A1100145237F2ED1DD70BAE
    File CRC32: F43C72D3
    ROM SHA-1: 8940487A99647FD965732EB5791BBDEAE9E1FB8F
    ROM CRC32: 37CB1801
    Release Date
    Aug 18, 2019
    5 years ago
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