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freeadm / arduino-tvout

Automatically exported from code.google.com/p/arduino-tvout
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Memory #36

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Is it possible to store the data for the resolution in an external device? e.g 
SD card or RAM IC.

This would make it possible for larger resolutions, no?

Original issue reported on code.google.com by thomasmc...@hotmail.co.uk on 20 Jun 2011 at 11:25

GoogleCodeExporter commented 8 years ago 
Possibly in a RAM IC, but an SD card is unlikely. There are fairly stiff timing 
constraints on the TV signal, so whatever you hooked up would need to be pretty 
fast - you should be able to use an AVR with the parallel bus option to attach 
more RAM, but I don't think that is available on any current arduinos

Original comment by rsa...@gmail.com on 31 Dec 2011 at 1:41

GoogleCodeExporter commented 8 years ago 
No, the frame buffer must be in internal sram, sd card and external ram are too 
slow.

Now there are other methods that can use an external memory ic but that is 
outside the scope of this project.

Original comment by mdmetzle@gmail.com on 25 Jun 2012 at 1:29