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AR# 12921

4.1i MAP - An XST design fails with "ERROR:Pack:270 - Invalid "IOB" property value of 'auto' found on register symbol. The only accepted values for IOB are TRUE or FALSE."


Keywords: 4.1, WebPACK, MAP, IOB, auto, TRUE, FALSE, XST

Urgency: Standard

General Description:
A design synthesized using XST fails in MAP with the following error:

ERROR:Pack:270 - Invalid "IOB" property value of 'auto' found on register symbol '<Symbol_Name>'. The only accepted values for "IOB" are "TRUE" or "FALSE".


It was found that XST was incorrectly applying the attribute "IOB=auto" to registers and that the MAP error is valid.

This problem is being investigated as an XST issue. Meanwhile, to prevent the failure, set the XST option "Pack registers into IOs" to either TRUE or FALSE.
AR# 12921
日期 08/20/2003
状态 Archive
Type 综合文章