Tutorial: Using the USB-Blaster as an SOPC/Qsys Avalon-MM master

Hi Dave,

I have a question;

Say I take your example design with the ram, leds and buttons, and instead of buttons I use switches.

I run this design on two boards.

On one board I put the switch to high / one, meaning Master.

On the other board I put the switch to low/zero, meaning Slave.

I connect two usb-byteblaster to my pc and start System Console

Situation 1:

How do I:

- Scan for all available jtag2avalon master?

- How do I assign a tcl variable MASTER, to the board that has the switch to one? So that I can use that MASTER in my other procedures for doing master_functions. For example "lit led 0 if you are a master board"

- And the same question for the slave.

Situation 2:

This should be dynamic.

When I have this running, I want to be able to switch both boards in the other mode.

Meaning, the master becomes slave, and the slave becomes master.

I would like to run the same script without modifying it, and detect the new master and new slave board. Is that possible?

Situation 3:

Now I start debugging, and add sometimes a NIOS with a jtag_uart, sometimes signaltap, sometimes both and sometimes none.

Can this script then still identify the jtag2avalon master and detect the master board and the slave board?

I assume that the nios has certain "jtag_identifier_code", and the signaltap as well.

Rgds,

Kimberley