Problem with PSDsoft express

amirbaro2 · ‎2004-12-01

Posted on December 01, 2004 at 14:26

amirbaro2 · ‎2011-05-17

Posted on May 17, 2011 at 12:03

Hi.

I can't configure PC2 as a combinatorial CPLD output at same time with PB2 as an external chip select -active low .

and it doesn't metter what the adress is.

I recieved the following message:

A preliminary resource check has been perfomed.

Following error has been detected.

-Conflicting assignment, or lack of resources in uPSD3354DV to achive a fit.

Unable to assign signal 'WIN_EN' (This the name I gave).

If i'm changing to other port like PC7 then every thing is fine.

Thanks.

jdaniel · ‎2011-05-17

Posted on May 17, 2011 at 12:03

bubble,

Are these the ONLY DPLD and/or CPLD configurations you've added in PSDSoft? CPLD's are a bit of a mystery to me, but from what I understand, it's easy to use up their resources by using various combinations of features/pins and then be unable to add more. You might want to just use PC7 if that works and you don't have the board already laid out. Otherwise, you might want to take a look at what else you're doing with the decode PLD (like how your memory map is setup) and CPLD.