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Chris Covell
@chriscovell.bsky.social
I'll be posting retro gaming, retrocomputing, and retro dev stuff. Canadian living in Japan www.chrismcovell.com/
79 followers30 following67 posts
CCchriscovell.bsky.social

OK, random game Saturday/Sunday...

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CCchriscovell.bsky.social

I don't know how many people this benefits, but I continue to work on a little program that extracts X-Terminator cheat codes from various SFC/SNES device ROMs, and matches them to a game name. Currently I found the code locations+pointers for the UFO 7.3, 8.1, 8.3j, 8.8c, UFOSD & X-T Param Cassette

UFO Devices
UFO Cheat Codes
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CCchriscovell.bsky.social

Very strangely, the Supercom Partner copier dumps SNES cartridges accurately if you choose the "CARD->SAVE CARD" option to write to disk directly, but it adds this 65816 code somewhere in some free (or not-so-free) bytes of the ROM if you go the "CARD->DOWNLOAD MEMORY" route. 🤔

hex dump
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CCchriscovell.bsky.social

I picked a "Supercom Partner" for pretty cheap with its box. It's your standard copier with some quirks. It has slow-motion, X-T code support (but none built-in?) and realtime savestates, which work, but not as well as the UFO in terms of glitching. (Now, does anyone have a "Special Partner" BIOS?)

Supercom Partner
Supercom Partner screen
Supercom Partner box
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CCchriscovell.bsky.social

Okay, since there were no programs that simply printed SNES internal header checksums into the console/text output, I programmed up my own. That's the first step done for matching UFO/X-Terminator codes up to their game names.

List of SNES checksums and game titles
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CCchriscovell.bsky.social

The Super UFO 8 copiers, both the 90s & 2010s vers, contain X-Terminator cheat codes stored in a similar data format to the SNES X-T itself. When a SNES game is loaded, the *inverse* checksum is compared to a list (so no game titles.) Each code uses only 4 bytes plus 1 byte for a generic description

Super UFO copiers
Some extracted UFO cheat codes
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CCchriscovell.bsky.social

The power lines of Japan always mar the beauty, though.

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CCchriscovell.bsky.social

Maybe just awareness of Download 2 is lower? Or the random obscenities of 1 had made a bigger impression? I prefer Download 2 myself... great music & backgrounds, larger sprites, etc.

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CCchriscovell.bsky.social

Oh, so it's post a random game from your collection day? OK!

Jigoku Gokuraku Maru -- great game!
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CCchriscovell.bsky.social

I do this with Super Famicom boxes in shops when they are oriented to only have the blank bottom of the box showing... 😩

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Chris Covell
@chriscovell.bsky.social
I'll be posting retro gaming, retrocomputing, and retro dev stuff. Canadian living in Japan www.chrismcovell.com/
79 followers30 following67 posts