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* Debug function that came with 1.0 removed * US Version start up screen shows "TurboGrafx CD 2.0" * Bundled with the debut US CD-ROM system release (Also released in Japan) * Has built-in memory viewer and debugger (Hold Up + Right + Button I + Button II, then press Select) * Only card that will allow the CD version of Altered Beast to play flawlessly * Bundled with the debut Japanese CD-ROM system release (Not released in the US) Regarding what card had what RAM I copy from the thread wap2 Posted by phoenixdownita on Jul 29, 2012: PC-Engine (any model) + Super CD-ROM AttachmentĭUO-R works with System Card ROMs 1.0 to 3.0ĭUO and DUO-RX should be the same as DUO-R PC-Engine (any model) + CD-ROM Attachment
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We still need someone to test CD BIOS loading with the following setups. If anyone has any other hardware setups please test and post the results so this thread can be used for reference. The Super CD-ROM has the System Card with RAM built in. Loading CD BIOS images might come in handy for someone that is missing their system card but only for regular CD-ROM games as Super CD-ROM games require the extra RAM in the system card. To play Arcade CD-ROM games you will still need to remove the Turbo ED and insert an Arcade Card DUO. Or to avoid removing and inserting the Turbo ED often. This mainly would come in handy for the Altered Beast CD-ROM which I've read only works properly on System Card 1.0. You can load System BIOS images Version 1.X up to 3.X and play CD-ROM and Super CD-ROM games. It loaded as expected and played fine with System Card 3.0 loaded and gave the proper error message when trying to load with the System Card 1.0 loaded. I tested by trying to load a Super CD-ROM game (Lords of Thunder). I have tested this on a DUO-R system and this should be the same for the regular DUO and DUO-RX and possibly true for the PC-Engine + Super CD-ROM attachment.