Anyone have problems with John Kent's 6821 core with Quartus v6.1? I've been using it in a design for several months now and all of a sudden, under Quartus v6.1 I get... "Error: The node ... data_out has multiple drivers." Doesn't seem to be anything under known issues on Altera's site... Regards, -- Mark McDougall, Engineer Virtual Logic Pty Ltd, http://www.vl.com.au> 21-25 King St, Rockdale, 2216 Ph: +612-9599-3255 Fax: +612-9599-3266

Mark,

I don't know that I have released the PIA6821 in the System09 package I
have up on CVS at the moment. I was hoping to update the directory
structure to include a library directory and project directories for a
range of boards, but I have not had time to check all the
implementations yet. I'm afraid I have been dragging the chain on the
project a bit of late. I can perhaps put what I have up on CVS but
people need to be warned that it is not a "download and go"
implementation at the moment. The components work, but the Flex
operating system RAM disk driver no longer works, due to changes in the
system memory map.

John.

Mark McDougall wrote:
-- http://www.johnkent.com.au http://members.optushome.com.au/jekent