Forums

Someone in the Plutiedev Discord server had a crazy idea: put a 32-bit microcontroller in a Game Gear cartridge for GBA-class visuals and audio, albeit at the GG's lower resolution. I suggested that it could send the video back to the main unit the same way as the TV tuner accessory. But could it receive button presses that way? Or does TV tuner mode use the whole bus and shut down the Z80? Could it be alternated, with TV tuner mode during frame time and normal mode during vblank?

according to here:

https://www.smspower.org/Development/TVTunerAdaptor

Quote

The TV Tuner switches the Game Gear into a special operating mode by grounding the /TV pin, where the Z80, VDP, and other peripherals are disabled.

Author	Message
PinoBatch Joined: 05 Dec 2019 Posts: 56 Location: USA	Does the Game Gear CPU still run in TV tuner mode? Posted: Sat Mar 14, 2020 12:35 am
PinoBatch Joined: 05 Dec 2019 Posts: 56 Location: USA	Someone in the Plutiedev Discord server had a crazy idea: put a 32-bit microcontroller in a Game Gear cartridge for GBA-class visuals and audio, albeit at the GG's lower resolution. I suggested that it could send the video back to the main unit the same way as the TV tuner accessory. But could it receive button presses that way? Or does TV tuner mode use the whole bus and shut down the Z80? Could it be alternated, with TV tuner mode during frame time and normal mode during vblank?

thatawesomeguy Joined: 25 Jul 2007 Posts: 730 Location: Melbourne, Australia	Posted: Sat Mar 14, 2020 1:32 am
	according to here: https://www.smspower.org/Development/TVTunerAdaptor Quote The TV Tuner switches the Game Gear into a special operating mode by grounding the /TV pin, where the Z80, VDP, and other peripherals are disabled.

Forums

View topic - Does the Game Gear CPU still run in TV tuner mode?