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I have a PC Action Replay device that I'd like to donate to the cause, if anyone is interested in dumping and trying to emulate it.

It's a sort of hardware debugging card that plugs into an ISA slot. Kind of like an advanced Game Genie, but for a PC.

It originally came with a floppy disk with a DOS TSR program of some kind, but sadly, the disk was lost when I was robbed a long time ago. I'm sure copies of that floppy disk must exist somewhere, either on the web or in some hoarder's basement. I don't remember if the disk is required or not.

I didn't know there one for PC.

It's funny you mention that, I just received everything we need to emulate that today including info on how the flash ROM is encrypted.

You forgot the <sarcasm></sarcasm> tags.

That's actually pretty awesome. Hopefully it still works without the floppy.

The floppy probably contained the memory-resident drivers needed for real and protected mode.

http://en.wikipedia.org/wiki/Action_Replay#Versions_for_computers

These I believe are the links to the software (web archive). I'm not sure if this requires the original software to update or if it's a full install, hopefully it's a full install is within the archive.

- MS-DOS Version 4.8 of the PC Action Replay software

Edit: Removed Windows 95/98 link.

I don't believe that Windows 95 was out yet when I originally got this. I think it's the earlier version of the hardware. So I'm pretty sure that second link doesn't apply. The first link looks like DOS software though.

These are DOS files, not Windows. When you run "areplayx.exe" within the archive, more files are extracted, including a readme, which says (among lot's of other info):

What Is AREPLAY.COMs Purpose?

AREPLAY is a small memory resident program (TSR) that communicates various information with the Action Replay. It is also responsible for initialising the Action Replay with the configuration file that is created using the SETUP program, and then finally turning the card on. If the AREPLAY program is not run then the Action Replay will not operate. When running AREPLAY, various checks will be done on the Action Replay's hardware to make sure that it is configured and working correctly.

What Is PROT.EXEs Purpose?

PROT is a small memory resident program (TSR) that holds all of the Protected Mode functions that enable the Action Replay to work with Protected Mode games, such as DOOM, UFO, Theme Park etc. If this program is not loaded then the Action Replay can only be run in Real Mode (normal 640K DOS operation).

It sounds like this is what you need.

EDIT: Yes, the second link does not contain DOS software, I've removed it and renamed the first link to be more clear.

Reading through the readme, it mentions a 4.0 flash ROM.

When I look at the board, the ROM chip has a "4" faintly written in black marker, but some of the other chips are marked as well with "P1" "P2" "P3" "P4", so I don't really know if the "4" is meaningful or not.

I have some paperwork that I think I got in the mail sometime after buying it that talks about an upgrade flash ROM that you can purchase. I honestly don't remember if I purchased the upgrade or not.

I guess if someone was able to dump the flash ROM, it would probably have a version string in it somewhere.