How much program in the ROM is free for user programs? I am trying to estimate how large a CNN (low parameter precision) I can use on this device. The model might be 1.5MB for example and I see on the spec sheet there is 1920 free but I understand there is often overhead from other software components needed. I suppose a related question, thought maybe difficult to get write is how much ram is free typically for a user program to use allowing for other tasks that are running? This is also likely to differ from the spec sheet.