Re: [partial-reconfig] Problems with MAP in Active phase

["Umar Mushtaq" <misfit_05@xxxxxxxxxxx>]

The following *might* help... you might call it nitpicking, and I might
have been unable to see the real reason for the errors you are getting,
but here goes:

1). Try placing the BMs on even-numbered rows... for some reason designs
fail when BMs are placed on odd-numbered rows... While I do recall
reading something about this somewhere, it might just be a rule of
thumb, but you never know if this is what is causing the problems...

2). Use the MODE = RECONFIG for all modules, whether reconfigurable or
not... I didn't find the constraint for the "admxrcif" module... 

3). PACE usually messes up the resource assignment for BRAMs and
MULTs... for a BRAM column for instance, it repeats the assignment of
that column over and over again... in your case this isn't so, because
each BRAM and MULT column is assigned once, but it would be so much more
simpler if for the larger module you had the following:

RAMB16_X1Y0:RAMB16_X5Y15,
MULT18X18_X1Y0:MULT18X18_X5Y15 ;

This of course isn't an error, and the constraints would work the way
they are in your .ucf file, but it is always good to keep things
simple... also, I have found it a good idea to copy the constraints into
a text file before modifying the .ucf file in PACE, for the reason I
mentioned earlier...

:)

Sincerely,
Umar
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