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Super Disc Boot ROM

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Title Screen

Super Disc Boot ROM

Developer: Sony Corporation
Platform: SNES


CopyrightIcon.png This game has hidden developer credits.
DevTextIcon.png This game has hidden development-related text.
DebugIcon.png This game has debugging material.


This game was stuffed away in a cardboard box and found 30 years later in a garage
This game was never completed and/or given a public release.
As a result of this, keep in mind that the developers might have used or deleted some of the content featured here, had the game actually been released.
So very stubbly.
This page is rather stubbly and could use some expansion.
Are you a bad enough dude to rescue this article?

The Super Disc Boot ROM would have been required to boot disc-based games on Sony's ill-fated PlayStation add-on/all-in-one SNES+CD console, and came in the form of a separate cartridge that would have plugged into the console's cartridge slot. The fact that there is only one known working unit in existence makes this little more than a curiosity.

Now that the Super Disc prototype is finally working, all that's needed is someone who can reverse-engineer it so that proper emulation of the SNES CD add-on can happen. Currently only no$sns can emulate it, but not very accurately.

Download.png Download Super Disc Boot ROM
File: Super Disc Boot ROM.rar (60 KB) (info)


Hidden Text

Present at the very beginning of the ROM:

Super Disc boot ROM ver.0.95 Jul. 14, 1992 by Tomomi Abe at SONY

A slightly different version is at 0x606B in the unheadered ROM:

Super Disc BIOS program ver.0.93 by Tomomi Abe. May. 26 1992 at SONY.

MONITOR MENU

SuperDisc-MonitorMenu.png

Press A + X at the title screen to enter the debug menu.

SELF CHECK

SuperDisc-SelfCheck1.png SuperDisc-SelfCheck2.png
Basic Functions Expansion Functions
V-RAM EXPANSION RAM
CG-RAM BACKUP RAM
OAM CD-ROM DECODER
WORK RAM CD-PLAYER I/F
DMA
TIMER
SOUND SOURCE CHECK
Finished.

ADPCM

SuperDisc-ADPCM.png

  • Select - Return to main menu.
  • D-Pad - Set digits.
  • L / R - Select previous/next setting.

COMMUNICATION

SuperDisc-Communication.png

  • Select - Return to main menu.
  • D-Pad - Set digits.
  • B - Send command.
  • L / R - Select previous/next command.
  • X - Restore command during a command process.

CXD-1800

SuperDisc-CXD1800.png

  • Select - Return to main menu.
  • D-Pad - Set digits.
  • L / R - Select previous/next register.
  • B - Write/Read Byte to/from register.
  • Y - Set between Write/Read Mode.
  • X - Set between different IRQ modes (IRQ-1TIME, IRQ-IGNORE, IRQ-ALL).

BACKUP RAM

SuperDisc-BackupRAM.png
BACKUP RAM
There aren't any files.
Select Erase Return

Press Select at the title screen when the CD-ROM System is detected to access this menu.

  • D-Pad - Select save.
  • B - Erase save.
  • Y - Go back.