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PCB files and BIOS patcher can be found on github: https://github.com/Prehistoricman/Xbox256MB/tree/master Upgraded Xblast OS can be found on bitbucket: README and Downloads The new Xblast OS comes with a RAMTESTER variant that lets you test the stock set of 4 chips. This can be useful even for a typical 128MB mod when things go wrong and the Xbox won't boot normal Xblast. MachoNacho already did a tutorial on installing this upgrade: https://www.youtube.com/watch?v=R2hvSL30Rlg So here's a brief tutorial for installation. Tutorial Be aware this is an advanced mod and while it does grant quadruple the memory, there is a performance disadvantage. The memory clock speed must be reduced to make this memory stable (this is handled in my BIOS patcher). Tools required: Hot air station (recommended for removing stock chips) Precision soldering station Microscope suitable for soldering Flux Solder Solder wick IPA Multimeter Hardmodded Xbox Spare Xbox to be able to reflash your modchip if necessary Steps: Flash the Xblast OS 0.63 RAMTESTER 256Mbit BIOS to your modchip If your modchip has only one bank, you can still access the normal Xblast menus by pressing eject to power on the Xbox. If your modchip runs an OS BIOS (like PrometheOS, Xenium or Xblast), patch it and flash it first Remove the stock memory chips. Use hot air to desolder it - I like to place tinfoil on the board to protect the other components and plastic from the heat. Or just cut the pins if you don't care about the stock memory chips. Solder in the new memory modules Start with bank 1 in the stock memory layout. See this diagram Precisely align the module on the motherboard Solder 1 pin in a corner to anchor the module Make sure you get the orientation right. There is an arrow in the corner of the module that should align with a dot on the motherboard. That's pin 1. Solder the opposite pin Check the orientation again! I got this wrong twice :((( Solder the rest of the pins on the module Power on the Xbox to test it with the BIOS If you got it right, the LED code will indicate that bank 2 has failed. See README for LED codes. If the LED code shows bank 1 failed, there may be a short circuit or open circuit. Check your soldering. If the Xbox powers off very quickly and doesn't reboot, you have a short circuit. Check your soldering. If the Xbox reboots 3x and FRAGs, there may be a short circuit or open circuit. Check your soldering. Repeat for banks 2, 3, 4 in order. Try booting Xblast using the eject button, or any other 256MB compatible BIOS. Install the rest of the banks, using the memory test in Xblast OS's Tools menu to check if they are working. Flash a 256MB compatible BIOS X2 and X3 BIOSes are known to work and have the full 256MB usable Cerbios support is not good yet, but they are working on it. EvoX will boot, but needs additional patches to be able to use the extra memory. Do nothing with the additional memory Interposer assembly One way to do this upgrade is to buy the loose memory chips and interposer PCBs and assemble them. You need to be confident with BGA soldering. The memory chip is HY5DU573222F-28 which you can find on Alibaba and maybe other places too. The -28 is the speed bin and I don't recommend going any slower such as -33. The interposer PCB designs are on Github and I've included gerbers in the release suitable for ordering from PCBWay.

Long awaited update is now here, a lots changed. Grab it from the downloader or my GitHub. Changelog Download prebuilt version

Just checking to see if there are any devs that would like to look into any of these games that have the source available. I know some have already been ported to xbox, however there are quite a few that would be interesting to see running. https://github.com/historicalsource?tab=repositories Here is the original thread where I came across it. Thanks to Anthony for bringing it up. https://www.dreamcast-talk.com/forum/viewtopic.php?f=5&t=14362&sid=6ed6fdb2d6b35f40b68765561d4d2f92

Need chip of controller ( duke- smaller realease original) modded for wireless or with the shell too.

What features would you want to see? Or would you rather not see any of the sorts at all, after looking at the underwhelming retro product delivered by Sony, the Playstation Classic? I think it would be sweet to see a miniature version, that would enable you to download games of your choosing, outputting higher resolutions etc All in all it would be nice to expose a bigger audience to the classic Xbox and its unique features and feel. But there also lies the problem... How in the world could any manufacturer do it justice, without just throwing out a cash grab?

Build v1.1.8 Change log Readme