Seirei Gari - SRAM save hack

This hack adds a save function to the Seirei Gari game. You no longer need to write down long passwords. Each time a password appears on the screen (by pressing the "select" button) the cartridge stores it into battery-backed PRG RAM memory. On the password entry screen, the last saved password will be entered automatically. You still can enter a password manually if you want.

Since original UNROM cartridges have no PRG RAM memory, there are two versions of the patch:

- A patch that leaves UNROM mapper and adds NES 2.0 header with information about the presence of unusual battery-backed PRG RAM. This ROM will work on modern emulators, modern flash cartridges, self-made UNROM boards with PRG RAM, and compatible multicarts (COOLGIRL, etc.)
- MMC3 conversion. This ROM will work on all emulators, compatible MMC3 boards (TNROM with CHR RAM) and compatible multicarts (COOLBOY, COOLGIRL, etc.)

ROM information:
- Database match: Seirei Gari (Japan)
- Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
- File SHA-1: 49DDDBB4A41D6D1CF3FE3683A8945F52C1795729
- File CRC32: F54BCFB8
- File MD5: DEBDCFC77EB9D362C693ADDD7FDD2499
- ROM SHA-1: F85050E16EE37A1092DF8CEF697BBEF284884C53
- ROM CRC32: D8F651E2
- ROM MD5: 9D6B43DBFE633EEC5AC8CE985D2A931A

Also you can apply this patch over translations as well. It works with all known translations.

Credits:
Alexey 'Cluster' Avdykhin
clusterrr@clusterrr.com
https://clusterrr.com