Still debugging the attachment of User Flash Memory to the J68….
So if I take my working UFM avalon-mm Master controller (which if you recall, connects to the Altera Flash Memory IP core), and attempt to attach it to the J68, the J68 no longer boots the ROM monitor code.
Since it’s not booting, I really don’t have many indications as to why. I decided that writing a ROM bus sniffer that records ROM memory requests and responses, including how long it took to satisfy that request, was worth the trouble.
In the image below, you’ll see four 32-bit columns of data on the left. Each row is a separate request.
They are:







