Answers Database

PROcapture: Do not use RAM16.1, RAM32.1, ROM16.1, and ROM32.1 components


Record #240

Product Family:  Software

Product Line:  ViewLogic

Problem Title:
PROcapture:  Do not use RAM16.1, RAM32.1, ROM16.1, and ROM32.1
components



Problem Description:
To build the XC4000 RAM and ROM components in Viewlogic, the Xilinx libraries
use Viewlogic created primitives.  These primitives, needed for simulation,
not for schematic entry, are:

     RAM16.1
     RAM32.1
     ROM16.1
     ROM32.1

In the pre-Unified libraries, the above components are located in the x4000
library.  In the Unified libraries, they are located in the xbuiltin library.


Solution 1:

When specifying RAM or ROM components for an XC4K design, use any of the
following components located in the x4000 and xc4000 libraries:

     RAM16X1.1, RAM16X2.1, RAM16X4.1, RAM16X8.1
     RAM32X1.1, RAM32X2.1, RAM32X4.1, RAM32X8.1
     ROM16X1.1
     ROM32X1.1

Do not use the following components located in the x4000 and xbuiltin
libraries:

     RAM16.1, RAM32.1
     ROM16.1, ROM32.1



End of Record #240