AR# 10575: 3.1i Virtex MAP - Combined BLKRAM and slice-based area-groups are not translated correctly to PCF.
AR# 10575
3.1i Virtex MAP - Combined BLKRAM and slice-based area-groups are not translated correctly to PCF.
描述
Keywords: Area Groups, BLKRAM, slice, PCF, UCF, translate
Urgency: Standard
General Description: It has been discovered that MAP cannot simultaneously process area groups that are both BLKRAM-based and slice-based. When the UCF file defines AREA GROUPs for both slices and BLKRAMS, with associated range constraints, the PCF produced by MAP only has the COMPGRP of elements defined *first* in the UCF, with the second group missing.
解决方案
A workaround is to map the design twice with each of the two area group types, then combine the resulting PCF files.