Grundy Newbrain DEMO

This is a demo of a Grundy Newbrain Home computer Based on Zilog z80 @4Mhz.

I am using an arduino uno connected to a SD Card and communicating with the Newbrain using the RS232 Serial port.

By using poke 19,9 i change the default storage device to RS232 so i could use load and save as usual. You can see the real speed of the Newbrain as it paints graphics on the screen.

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