参数资料
型号: IPT-C2H-NIOS
厂商: Altera
文件页数: 23/138页
文件大小: 0K
描述: C2H COMPILER FOR NIOS II
标准包装: 1
系列: Nios®II
类型: Nios II
功能: C 到硬件编译器
许可证: 初始许可证
2. Getting Started Tutorial
Introduction
f
C2H Compiler
Design Flow
This chapter describes the design flow for the Nios ? II C-to-Hardware
Acceleration (C2H) Compiler. This chapter provides a design example
and gives you a step-by-step tutorial to guide you through the process of
creating your first hardware accelerator.
The example software design performs multiple iterations of a data-copy
function. By accelerating the data-copy function, you achieve more than
a 10-fold improvement in the execution performance. The resulting
hardware accelerator resembles a hardware block with direct memory
access (DMA) to copy data without processor intervention.
This tutorial assumes that you are familiar with the Nios II processor and
the Nios II design flow.
For introductory information on designing with the Nios II processor,
refer to the Nios II Hardware Development Tutorial available on the Altera
Nios II literature page at http://www.altera.com/literature/lit-nio2.jsp ,
and to the Nios II Software Development Tutorial available in the Nios II
integrated development environment (IDE) help system.
This section discusses the design flow to create a hardware accelerator
with the C2H Compiler.
Starting Point for the C2H Compiler Design Flow
The design flow for the C2H Compiler starts with one or more C files that
compile successfully targeting the Nios II processor. Before you accelerate
a function with the C2H Compiler, you must:
Identify the functions that require acceleration.
Debug the functions first targeting the Nios II processor. After
accelerating a function, you can no longer debug individual C
statements within the function.
You might have existing C code that you need to accelerate to improve
performance. Alternatively, you might develop and debug a function in
C with the explicit purpose of converting it to hardware. In either case,
you achieve the best results if the C code is structured for the
C2H Compiler. To start with, you can accelerate your code as-is, and
determine if the results meet the design requirements.
Altera Corporation
November 2009
9.1
2–1
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