FPGA NAND Interface tips

[Russ Dill]

> you might also think about a way of writing cmd+addr in one go, or
> at-least the address cycles.

I did consider that, a seperate command/address fifo. It would have 2
addresses, one for command, one for address, internally, extra bits
would be stored with each byte to indicate command or address.

However, it seems like a nice to have, since command/address setup
would be such a small percentage of total accesses.