Yeah, that list was quite out of date. 80sFreak says he's about ready to release a limited batch of the Famicom flashcarts he's been working on, based on the Munchausen cart that was in development hell for however long. http://www.famicomworld.com/forum/index.php?topic=5091.135
Hey guys, the list over at atariage is now up to date. I've come to accept that complaints are good motivation for me to update it I've used some of the information here to update the list, thanks guys! http://www.atariage.com/forums/topic/127752-flashcart-and-multicart-list-all-systems/
The list misses the "Diagnosticart", a multicart for Creativision, produced in 40 copies, as a "sequel" to the Multicart. I'm one of the guys who designed and produced it. Homepage of the project is: http://www.madrigaldesign.it/creativemu/diagnosticart.php
How difficult do you think it would be to create something along the lines of a Sega Saturn Everdrive? Between the Saturn's BIOS checking for carts before discs and the lack of any serious security for that medium, I don't think it would be too hard. Afaik, I think it's already possible with expensive dev equipment (like PSY-Q). Looking at a bare AR 4-in-1, the carts seem to have a fairly simplistic design to them. Parallel sets of DIPs and PEROMs seem to associate with each other and the results get forwarded to a set of multiplexers. I might be wrong on how exactly it works, but there's almost nothing to that cart aside from those three types of chips. Thanks to the minimal footprint, it looks like it would be fairly inexpensive to build one on your own. It would be great to see something along the lines of a '6-in-1' Cart. Adding VCD playback and an OS that can execute code from a medium like SD or CF would be amazing. Even better would be a 7-in-1 multicart (getting all of this and combining it with a Sega Netlink or even ethernet connectivity, but now we're just foraying into mad science I guess ) It would give more life to the CD-ROM, spare the flimsy cart connector by not having to routinely swap out carts, breath some life into it's slow-paced homebrew scene, and probably allow for much faster load times. MP3 Playback is probably doable too. It seems like a world of endless possibility. (<- wants to go back to school and study computer engineering)
Yeah Sega Saturn Everdrive would be an instant buy for me. Unfortunately Krikzz already said he has no interest in CD-based consoles and i haven't heard anyone trying to accomplish this in Sega Saturn. Dreamcast gets much more attention in this area.
The devs of the PSIO project are planning to eventually support multiple systems, including the Saturn http://psdev.psio.com.au/forum/viewtopic.php?f=17&t=4&start=225#p736
neo geo pocket color wonderswan (the wonderswan witch doens't count) there really isn't much that doesn't have a flash cart any more the atari 2600 has one that works great and works on the 7800
You can't, just yet. It's a project that is being built before being fully announced. Waporware sucks. Basic info is that it will be sold as a bare board that fits into a standard DMG or CGB case (cutting the end to reveal the sd card slot of course. Uses microSD, has micro usb, automatically dumps SRAM to a file on the SD card. Will probably support loading from multiple SRAM files, and aside from emulating standard MBC types, the hardware on-board will be controllable and GB programs will be able to read/write to SD if they want to. Prototypes mostly work already. Sound like it's worth $100 to anyone?
Maybe not, depends of the build quality and the final components used in the cart, but $100 is a bit expensive. The Everdrive for Sega Mega Drive costs less and have some advanced parts and excellent quality and includes cartridge shell and SD Card.
http://www.flashmasta.com The guy who brought us the new ngpc flash cart has stated that his wonderswan flash cart project has officially started. It is a ways off but good news nonetheless. I think $100 is fair, I would purchase one.
Technically speaking, I don't think the Super Game Boy has a flash cart either. Not aware of any with an SGB menu interface.