Monster Party MMC5 Patch is a mapper conversion hack for the Nintendo Entertainment System, transforming the original game's MMC1 architecture to the more advanced MMC5. This update enables expanded RAM functionality, including switchable PRG RAM banks and enhanced bank switching capabilities. Released by Dracula X in 2019, this patch supports all emulator platforms and offers improved compatibility and performance.
This is a Mapper Conversion hack for Monster Party ROM from MMC1 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 v1.2.0
Monster Party
Mapper Conversion Patch
FROM Mapper 1 (MMC1) TO Mapper 5 (MMC5)
Converted by Dracula X
RELEASE DATE: 09/26/19
Last Modified: 10/31/21
PRG Bankswitch Routine is at $C60D
To switch banks from $C000 - $FFFF, use like so:
LDA bank_number
JSR $C60D
CHR Sprite Bankswitch Routine (Left side of PPU) is at $C5E5
To switch sprite pages, use like so:
LDA page_number
JSR $C5E5
CHR Background Bankswitch Routine (Right side of PPU) is at $C5F9
To switch background pages, use like so:
LDA page_number
JSR $C5F9
Nametable Mapping Routine (one of its uses is mirroring) is at $C5D1
To change mirroring for instance, use like so:
LDA mirroring_number (#$50 for Horizontal, #$44 for Vertical)
JSR $C5D1
This patch does not work for:
Parody World - Monster Party (Japan)
Hacks supported:
All!
Use Delta Patcher to patch the xdelta file to the ROM.
Ignore the checksum and then patch the file. If something
not right, then patch your hack ROM with your IPS file to the hack.
10/31/2021
Changes for this version 1.2.0:
All emulators are now supported.
Changes for this version 1.1:
All bugs have been fixed and the PRG ROM has been expanded.
Credits:
Rockman or RetroRain: for info on how to convert the mapper!
Disch: for his mapper docs and a better MMC5 startup!
Database match: Monster Party (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 2BC8244CAB439AC20BAA4724E8A92748D4E430E1
File CRC32: 6F0AC6EC
ROM SHA-1: 216A5B83111C2936998AF147E19A8A8CD73D8870
ROM CRC32: 2B9E7C2
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