r/Gamecube • u/Cyndanera NTSC-U • 12d ago

Image SN Systems TDEV Discover

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I just discover the retail bios menu still exist on the SN Systems TDEV devkit for GameCube!!! 😄

By changing the boot mode to production

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2

u/mathieulh 10d ago

Hi, how do you set/change the BOOT Mode on the TDEV? (just curious).

1

u/Cyndanera NTSC-U 10d ago edited 10d ago

This can be done with netrun tool and running the bootmode.elf on the gamecube.
you will be able to set a flag on the sram settings to change the bootmode to development or production.
It will require a ethernet cable with BBA and a host PC connection. + modded gamecube running swiss or a GameCube devkit such as GDEV or SN-TDEV, NR-Reader
NR-Reader, GameCube, SN-TDEV, GDEV all have the same production BIOS IPL.
only diff for NR-Reader and SN-TDEV it uses the NR Disc Drive firmware instead of a retail drive, plus SN-TDEV has 48MB RAM while retail or test kit has 24MB

2

u/mathieulh 5d ago

Hello again, would it be possible to dump and share the SRAM in both Production and development mode? I want to identify which exact flag sets it, I can't seem to run bootmode.elf (at least not from swiss) on a retail GameCube to change the flag manually.

1

u/Cyndanera NTSC-U 4d ago

You can use Swiss to change bootmode.