--- Quote Start ---
I think, that the USB Blaster has been produced by Altera first, but I may be wrong. ...
--- Quote End ---
Argh.
I totally forgot, that the Max II does contain some logic, which implements an USB Blaster.
I always use an external one...
(To be precise I use a Lauterbach debugger to connect to the Cyclone III.)
What I am interested in is the flash loader part of the Max II.
(So the part which configures the Cyclone III from a design which resides in the FLASH of the board.)
With the current Max II design (1337 revision) you have to disable the Max II completely to use an external USB blaster.
This means that if you want to use an external USB blaster, the flash loader of the Max II does not work any longer (because you have to disable the Max II completely).
A trivial solution would be to disable the drive of the MAX II onto the Cyclone III JTAG pins as soon as the DEV_SEL jumper is removed.
(The Max II is connected to the DEV_SEL signal and thus can read it out.)
with best regards
Ingo
PS: Of course you can implement your own Flash loader design for the Max II by using some example Altera Design, but it really would be nice if this would work out of the box.
Honored Contributor
