UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 424

XABEL 5.0 and XC7000 EPLDS: The .D extension is not supported by PLUSASM

説明

PROBLEM:

If the .D extension is used in XABEL and compiled to PLUSASM, it will
be ignored and the resulting equations will reference the registered
signal instead. PLUSASM does not have an analog to the .D extension
and the XABEL compiler does not know how to handle it. The .D extension
cannot be used on the left-hand side of an equation. (This is pointed
out in the note at the bottom of page 7-11 of the XACT 5 X-Abel User
Guide).

ソリューション


WORKAROUND:

The same result may be accomplished by declaring a
combinational signal signal_d to reference as the d input of the
registered signal and then declaring a seperate registered signal with
signal_q := signal_d.

AR# 424
作成日 09/20/1995
最終更新日 03/29/2000
ステータス アーカイブ
タイプ 一般