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  3. AR# 240: PROcapture: Do not use RAM16.1, RAM32.1, ROM16.1, and ROM32.1 components

AR# 240

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

描述

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.

解决方案

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
AR# 240
日期 10/01/2008
状态 Archive
Type 综合文章