Super Famicom Box confusion

975_1309089482.pngI believe there's still some confusion(even if it's only on my part) regarding the Super Famicom Box ROM-dumps out there.
In a nutshell, I dumped a couple of ROMs, but not all of them.

ROMs inside Super Famicom Box:

ROMs inside cartridges:





To clarify: I own a Super Famicom Box with cartridges PSS-61(containing ATROM-4S-0) and PSS-63 and have dumped all contained ROMs except for KROM 1. PSS-64 has not been dumped by me and AFAIK not by anyone else. This cartridge contains a unique GROM and (probably already otherwise dumped) game ROMs.
Judging from Youtube-videos linked above, there appears to be a PSS-61 cartridge out there with a newer menu ROM(probably ATROM-4S-1)
The Super Famicom Box consists of Super Famicom hardware and a yet unspecified system used to superimpose text onto the SFCs video output.

My current understanding is that KROM 1 is the boot-ROM of the latter, ATROM-4S-x is the boot-ROM and menu of the Super Famicom and GROMx-1 contains game-specific data for the superimposing system.

If you own PSS-62 or PSS-64 and want their contents dumped or if you have comments or corrections regarding the above, please contact me at matt [at]

Posted by d4s on 2011-06-26 13:58:03  snes rfc    [permalink]

Starfox (J) V1.1 dumped

351_1308511161.pngThanks to eagle-eyed Evan G of, I learned that I was in possession of a still undumped version of Starfox which was never used in retail cartridges, but only in a special cartridge for the Super Famicom Box hotel unit. I had hoped that Nintendo at one point fixed the issues Starfox was having with running on a Super FX in 21Mhz mode, but apparently they never did... The Super Famicom Box version still uses the same old Mario Chip Super FX in 10Mhz mode. No public release this time, as this ROM is only of archival interest, anyway.

Posted by d4s on 2011-06-19 21:19:23  sfc dump    [permalink]

NCON 10 challenge

-Mario World time-attack-

997_1307572388.pngI'm almost too ashamed to admit it, but I've created a romhack again.
A romhack of Super Mario World, of all things.
Yes, the Super Mario World that has been hacked to death a bazillion times.
But bear with me as this at least brings a couple of new things: Gone are overworld, titlescreen and game selection.
This game dumps you right into one of three specially-crafted time-attack stages repeated in an infinite loop after selecting them via a (admittedly poor) main menu.
You don't have lives, score or coins anymore.
All that counts is the time it takes you to complete a stage and this time is displayed on-screen with single-frame precision.

This was created for a local Nintendo convention called NCON and took over 70 hours to develop in total, including working for almost 3 days straight without catching any sleep. Like ever so often, it's a pretty rough hack job under the hood.

It was really enjoyable to see people getting hooked to this, trying to beat each others record by the millisecond for hours.
I created 3 cartridges of this game and people were constantly occupying them, all the way through the night and the next day.

On a not-so-fortunate sidenote, I've decided to drop all future support of any kind for NCON and related events.
The reason being that I have not once in my life met such ungratefulness for supporting an event by one of the organizers, having been treated downright disrespectful.
All I got from him was constant bitching and whining over non-issues.
Best part about this is that I even sent him a preview version the week before, so he could have easily checked it out and made suggestions about the parts he didn't like while I was developing it.
Needless to say, he didn't even bother to try it out beforehand.
I just don't get the arrogance and stupidity of people, sometimes...

Release includes sourcecode.

Posted by d4s on 2011-06-09 00:33:09  snes    [permalink]

Sega Saturn region-free Bios

-d4s is not amused-

253_1305939424.pngYeah, so I hacked the Sega Saturn Bios and removed regional lockout and CD authenticity checks. Obviously, that was the reason I was dying to get a Saturn a couple of days earlier. Thanks to an unnamed individual, I've got one now and promptly installed that modified Bios.

Good news first: regional lockout bypass works just fine on real hardware.
Install this Bios in your Saturn and play any authentic game in any video mode you like, no need for clunky switches or cartridges anymore.

The bad news: Although the CD authenticity checks in the Bios have been removed, CD-R copies still don't boot.
I basically have zero debugging capabilities on real hardware, so I can't really tell what the exact problem is, but credible sources suggest that the CD interface has to be unlocked by initializing with a genuine Saturn disc before being able to boot a game disc. This is rather unsatisfying, but I'm releasing this anyway, it's better than nothing.

I'll be getting a modchip for now and will have a look at this again once Dr. Decapitator has dumped the CD interface program ROM.
I could imagine that there's a debug command hidden somewhere that lets you boot CD-Rs without authenticating first. We'll see...

Also, if you plan on installing this Bios in your Saturn, keep in mind that the pinout of the original Bios maskROM is similar to the 27c800 and don't forget to byteswap the ROM before copying it to a 16bit Eprom. Btw, this hack is based on the japanese 1.01 Bios.

Posted by d4s on 2011-05-21 02:57:05  sega crack    [permalink]

Urgent - Sega Saturn needed

Guys - I totally need a Sega Saturn, and fast! This is an emergency!! A matter of life and death!!! Humanity is at stake!!!!!!11 Ok, not really, but I'm dying to get one and they're rare as fuck here - so, if you're living around Cologne, Germany and happen to have one(working or not) for sale, contact me at and I'll pick it up immediately. Thanks!

Posted by d4s on 2011-05-14 23:38:02  sega crack    [permalink]

King of Fighters 2000

-SNES version dumped & cracked by yours truly-

985_1304723948.pngYet again thanks to Lord Azathoth for supplying the cartridge. This game was previously undumped, so I've included both the unaltered dump and a cracked version. Protection-wise, it's still the same stupid crap DVS has been using since Pocket Monsters.

Posted by d4s on 2011-05-07 01:19:08  snes crack dump    [permalink]

King of Fighters '99 (Genesis) cracked

900_1301824489.pngHere's a cracked Genesis game for a change. Thanks again to Lord Azathoth for pointing me in the right direction. Unfortunately, there seems to be some confusion regarding these copy protected pirate games on the genesis. Some newer emulators emulate these protections, but a couple of cracked ROMs already exist aswell, although it's not always obvious which versions are cracked and which aren't. Anyway, this game actually looks rather nice compared to its SNES counterparts, gone is the jerky framerate and the graphics look rather clean. Let me know if you have problems.

Posted by d4s on 2011-04-03 11:54:49  megadrive crack    [permalink]

Level up!

-Street Fighter EX plus Alpha HKO cracked-

777_1301610789.pngI already had a look at the ROM dump of Street Fighter EX plus Alpha some years ago. This game is an HKO, an unlicensed beat 'em up based on a crappy engine using graphics ripped from a CPS 2 arcade game (My best guess would be Street Fighter Alpha 2 or 3). However, upon seeing that it used the same protection as Tekken 2 (which I had to obtain a cartridge of to be able to crack it), I gave up early. Thanks to Lord Azathoth, my interest in cracking this game was renewed and as it turns out, it was comparably easy to crack because the programmers were rather sloppy implementing the copy protection. In fact, they were so sloppy that they forgot to take out a debug protection override in one place, saving me some trouble. ;)

Posted by d4s on 2011-04-01 00:33:09  snes crack    [permalink]