KOEI Dreamcast Classics - VGA Patch Collection

A collection of VGA compatibility patches for classic KOEI strategy games on SEGA Dreamcast.

This pack includes VGA patches for the following titles:

• Nobunaga no Yabou: Reppuuden
• Nobunaga no Yabou: Shouseiroku with Power-Up Kit
• Sangokushi VI
• Sangokushi VI with Power-Up Kit

Credits:

• Patch author: Rolly

About These Patches

These classic KOEI simulation titles were originally designed without VGA support, preventing owners of VGA boxes or cables from enjoying them on compatible monitors. This collection of patches modifies each game's executable to force VGA mode, giving players access to crisp 480p image quality across all four titles.

Key Features:

• VGA Output Enforced: Allows each game to boot and display correctly on VGA-compatible screens.
• PAL Support Included: Fully compatible with both NTSC and PAL console versions, ensuring European Dreamcast owners can also enjoy these games in VGA mode.
• Pure Display Fixes: The patches only alter the video output settings. All game data, text, music, and gameplay mechanics remain completely unchanged.
• Complete KOEI Collection: One convenient place to find VGA patches for four classic Dreamcast strategy titles.

Installation Instructions

You will need clean GDI dumps of each corresponding game:

• Nobunaga no Yabou: Reppuuden T7605M
• Nobunaga no Yabou: Shouseiroku with Power-Up Kit T7602M
• Sangokushi VI T7603M
• Sangokushi VI with Power-Up Kit T7607M

Download one of the tools.

• 1. For Universal Dream Patcher from https://github.com/DerekPascarella/UniversalDreamcastPatcher and apply the .DCP patch to the original .GDI image.

• 2. For GDIBuilder v2.1.1 from https://projects.sappharad.com/tools/gdibuilder.html Replace the 1ST_READ.BIN file and use the "Patch a copy" option for all files to build the image.

• 3.  Run the ready .GDI patched image on one of the ODE.

Note: Please ensure you are applying each patch to the correct corresponding game image.

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