The Legend of Zelda CHR-ROM Conversion MMC1 or MMC3

Original game : The Legend of Zelda

Platform : NES

Author : gzip

Release date : 17 May 2022

Category : Improvement

Patch version : 1.0

Modifications : O

Downloads : 223

ROM Information

Database match: Legend of Zelda, The (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: DAB79C84934F9AA5DB4E7DAD390E5D0C12443FA2
File CRC32: D7AE93DF
ROM SHA-1: A12D74C73A0481599A5D832361D168F4737BBCF6
ROM CRC32: 3FE272FB

Hack description

This hack converts Zelda from CHR-RAM to CHR-ROM and optionally to MMC3. This allows the game to run on more hardware variations and makes complex graphics hacks easier to manage. The code can also serve as a reference in how to convert to CHR-ROM and MMC3.

There are several independent patches in this package:

* mmc1.ips - Converts to CHR-ROM with 4k CHR banking (fits in 32k CHR-ROM)
* mmc1-8k - Converts to CHR-ROM with 8k CHR banking (fits in 64k CHR-ROM but saves some space in bank 7)
* mmc3.ips - Converts to CHR-ROM and the MMC3 mapper (fits in 32k CHR-ROM with 8k free)
* mmc-mapper-only.ips - Converts to the MMC3 mapper with no other changes

All versions have been tested on actual hardware including SKROM, TKROM, and TSROM.

Full source code is included. Run build.bat to see build options.

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