32KB of ROM implemented using the ECP5 memory blocks (16 DP16D)
Until the SD-RAM is not implemented : 64KB of RAM (32 DP16D)
an UART link to receive input
A simple video processing core (2 programmables color registers, programmable start of the memory video inside the RAM, 640*480 - 38400 bytes)
A programmable delay timer
The demonstration will :
On power up, clear the screen and display a greetings
Then, a REPL will
echo the US-ASCII characters received through the UART link and scrolling text as the screen is filled with chars ; Return key is interpreted to go to the next line.
Every seconds, the display change its color scheme (avoid strong change, keep moderately bright text over dark background). Let's say «amber over dark marroon», «medium green over dark green»
In order to demonstrate how to use the cradle as an implementation layer, a small system on chip has to be designed.
The demonstration will :