Answers Database
XABEL 5.0 and XC7000 EPLDS: The .D extension is not supported by PLUSASM
Record #424
Product Family: Software
Product Line: Data I/O
Product Part: xabel
Product Version: 5.0
Problem Title:
XABEL 5.0 and XC7000 EPLDS: The .D extension is not supported by PLUSASM
Problem Description:
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).
Solution 1:
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.
End of Record #424 - Last Modified: 12/22/95 09:57 |
