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ROM HACKING14,793 hacks

3,761 games17,487 resources

Nintendo Entertainment System · Improvement

Journey to Silius MMC5 Patch

By Dracula X

Journey to Silius · All hacks & resources →

Journey to Silius MMC5 Patch screenshot 1

Journey to Silius MMC5 Patch gameplay screenshot.

About this project

This is a Mapper Conversion hack for Journey to Silius ROM from MMC1 to MMC5.

Features:

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

Read the Readme for changes in this version v1.2.0

Happy Thanksgiving!

Original game requirements

Database match: Journey to Silius (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 275244538589393B552B159AB1D380090C8E8996
File CRC32: 8F77CCE0
ROM SHA-1: E12500475AE3F76F36A2C49175B3A6B783DD904C
ROM CRC32: E2C4EDCE

Creator credits

Dracula X: Listed creator

RELEASE 1.2.0

Readme & instructions

4819readme.txt

Journey to Silius Mapper Conversion Patch FROM Mapper 1 (MMC1) TO Mapper 5 (MMC5) Converted by Dracula X RELEASE DATE: 11/28/19 Last Modified: 10/28/2021 Happy Thanksgiving! PRG Bankswitch Routine is at $C6ED To switch banks from $C000 - $FFFF, use like so: LDA bank_number JSR $C6ED JMP to any location in $8000-$BFFF CHR Sprite Bankswitch Routine (Left side of PPU) is at $C70D To switch sprite pages, use like so: LDA page_number JSR $C70D CHR Background Bankswitch Routine (Right side of PPU) is at $C723 To switch background pages, use like so: LDA page_number JSR $C723 Nametable Mapping Routine (one of its uses is mirroring) is at $EBFC To…

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Journey to Silius
Mapper Conversion Patch
FROM Mapper 1 (MMC1) TO Mapper 5 (MMC5)
Converted by Dracula X
RELEASE DATE: 11/28/19
Last Modified: 10/28/2021
Happy Thanksgiving!




PRG Bankswitch Routine is at $C6ED

To switch banks from $C000 - $FFFF, use like so:

LDA bank_number
JSR $C6ED
JMP to any location in $8000-$BFFF




CHR Sprite Bankswitch Routine (Left side of PPU) is at $C70D

To switch sprite pages, use like so:

LDA page_number
JSR $C70D




CHR Background Bankswitch Routine (Right side of PPU) is at $C723

To switch background pages, use like so:

LDA page_number
JSR $C723




Nametable Mapping Routine (one of its uses is mirroring) is at $EBFC

To change mirroring for instance, use like so:

LDA mirroring_number (#$50 for Horizontal, #$44 for Vertical)
JSR $EBFC

Hacks supported:
All

Hacks not supported:
The Terminator
It will still work but the title screen is not working right.

Use Delta Patcher to patch the ROM. Ignore the checksum and then patch the file.

10/28/2021
Changes for this version 1.2.0:
I think all emulators are now supported.

Changes for this version 1.1:
Changed the main mirroring swap to a new default location $EBFC
and moved the MMC5 Setup to a new location at $3FF10 so people can use
that free space at $1EBB0. Forgot to add PRG/CHR swapping with MMC5 equivalents to JSR's.

Credits:
Rockman or RetroRain: for info on how to convert the mapper!
Disch: for his mapper docs and a better MMC5 startup!

Download 4819readme.txt ↓

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