Sega Mega-CD BIOS (Hoshino Special): Difference between revisions

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April 2nd is the build date of the version of v1.11 this build is based on, not the build date of this build. The EPROM's label indicates that it was written on April 16th, 1992 so we should go with that date.
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|titlescreen=Hoshino a.png
|titlescreen=Hoshino a.png
|Page name=Sega Mega-CD BIOS (Hoshino Special)
|Page name=Sega Mega-CD BIOS (Hoshino Special)
|builddate=Apr 2, 1992
|builddate=Apr 16, 1992
|buildname=Hoshino Special
|buildname=Hoshino Special
|status=Released
|status=Released
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==Notes==
==Notes==
*This build displays "©SEGA 1991" at the top of the screen, whereas other V1.11 BIOS versions display "©SEGA 1991 Ver1.11".
*This build displays "©SEGA 1991" at the top of the screen, whereas other V1.11 BIOS versions display "©SEGA 1991 Ver1.11".
*The music and background are identical to those of the standard V1.11 BIOS.
*The music and background are identical to those of the standard V1.11 BIOS. The build date in the header is also the same as the standard V1.11 BIOS, though the EPROM's label indicates it was written on April 16th, 1992.
*This build features a custom Sonic logo instead of the standard Mega-CD logo found in other V1.11 BIOS versions.
*This build features a custom Sonic logo instead of the standard Mega-CD logo found in other V1.11 BIOS versions.
*Kazuyuki Hoshino has confirmed the authenticity of this prototype on Twitter.  
*Kazuyuki Hoshino has confirmed the authenticity of this prototype on Twitter.  

Revision as of 01:08, September 29, 2026

Title Screen
Sega Mega-CD BIOS (Hoshino Special)
Build date Apr 16, 1992
Build name Hoshino Special
Dump status Released
Dumped by Gageiro
Released by Gageiro
File dump date February 2, 2026
File release date September 19, 2026
Origin EPROM
Dump method Minipro Tl866a
Ownership Gageiro (2026-present)
Game Sega Mega-CD BIOS
System Sega CD
Download Sega Mega-CD BIOS (Hoshino Special) (info)
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Note: Do not upload Sega CD builds directly.

A custom Mega CD BIOS made for Sonic Team creative director Kazuyuki Hoshino


Notes

  • This build displays "©SEGA 1991" at the top of the screen, whereas other V1.11 BIOS versions display "©SEGA 1991 Ver1.11".
  • The music and background are identical to those of the standard V1.11 BIOS. The build date in the header is also the same as the standard V1.11 BIOS, though the EPROM's label indicates it was written on April 16th, 1992.
  • This build features a custom Sonic logo instead of the standard Mega-CD logo found in other V1.11 BIOS versions.
  • Kazuyuki Hoshino has confirmed the authenticity of this prototype on Twitter.

Videos

Origin

Mega CD Unit

Custom BIOS EPROM


Sega Mega-CD BIOS prototypes
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