@oe1cxw This isn't documented on the bitstream page, but: TIL that ice40 will put the SPI flash into deep sleep mode before xferring control to the user program.
Is this user-configurable, b/c it royally broke a design I'm working on.
http://www.clifford.at/icestorm/format.html …
-
-
Will do when I get the chance. FWIW, I believe the bitstream in question was in fact made with IceCube. It's a warmboot-capable bitstream that then loads a user bitstream. So IceStorm isn't to blame for my woes :P. But might as well feature-gate it.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.