Altera Avalon Verification IP Suite - Manual (Page 191)

15 Nios II Custom Instruction Slave BFM
Subscribe Send Feedback
You can use Nios II Custom Instruction Slave BFM to verify the following aspects of the Nios II custom
instruction slave interface:
• Combinational and multicycle slave custom instructions
• Extended instructions
Figure 15-1: Custom Instructions Slave BFM Block Diagram
Physical Instruction
Public Events
Avalon Custom Instruction Slave BFM API
(Transaction Level Commands)
DUT
Slave Interface
Driver
Physical Result
Slave Interface
Receiver
instruction result
Test Program
The Nios II Custom Instruction Slave BFM does not use queues to manage the instructions or results.
Without queues, the BFM uses events to retrieve the instructions and to drive results. This method allows
greater flexibility in controlling the output result. For example, driving a result when the interface is unknown.
The BFM drives the old result onto the interface if you do not provide a new result for an instruction. If
there is no instruction, the BFM drives unknown (X) on the interface.
ISO
9001:2008
Registered
© 2014 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words
and logos are trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other
words and logos identified as trademarks or service marks are the property of their respective holders as described at
www.altera.com/common/legal.html . Altera warrants performance of its semiconductor products to current specifications in accordance with
Altera's standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes
no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly
agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device specifications before relying on any published
information and before placing orders for products or services.
www.altera.com
101 Innovation Drive, San Jose, CA 95134