After giving up the search for Xilinx supplied MicroBlaze reference designs for Xilinx Spartan-3A kit, I made the reference design using BSB in EDK 9.1SP1.
No problem encountered until the attempt to load the bitstream into Spartan-3A
Bitstream download succeeded, Done also OK. Reading back JTAG Status from impact tells me EVERYTHING is OK!
But... init LED is half-way dimmed and "AWAKE" LED is off, this behavior is the same no matter the "SUSPEND" input switch position. I have not enabled suspend in the design, so to my understanding the bitstream should come up alive?
But it doesnt. Is Spartan-3A in some undocumented deep sleep mode?
I was really hoping to see "Hello Spartan-3A" on the terminal, or at least the LEDs blinking. But all that happens is DONE=ON, AWAKE=OFF, INIT=30% dimmed.
I will fight again tomorrow, maybe I get some bright how to wake up Spartan-3A when I sleep.
Antti