[sdiy] self-modifying code was: Re: My latest project

[Rainer Buchty]

On Thu, 18 Feb 2010, cheater cheater wrote:

> How does this 'prefabricated bitstreams' stuff work?

Using the development tools, you create partial bitstreams which you 
then upload to the desired position within the FPGA.

This requires some careful design as you're essentially building a 
slot-like system in the FPGA, i.e. you require a static "interface 
connector"  and, of course, replacing individual "cards" to be put into 
those slots must not lead to crashing the remaining system.

E.g. reconfiguring the area around a currently running PPC processor 
(which the Virtex FPGA feature) is a particularly bad idea.

Rainer