
Preface: About This Guide
R
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| Variables in a syntax statement |
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| for which you must supply | ngdbuild design_name | |
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| See the Development System | |
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| References to other manuals | Reference Guide for more | |
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| Emphasis in text | overlaps the pin of a symbol, the | |
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| two nets are not connected. | |
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| An optional entry or parameter. |
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Square brackets | [ ] | However, in bus specifications, | ngdbuild [option_name] | |
such as bus[7:0], they are | design_name | |||
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Braces { } |
| A list of items from which you | lowpwr ={onoff} | |
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Vertical bar |
| Separates items in a list of | lowpwr ={onoff} | |
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Vertical ellipsis |
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| IOB #1: Name = QOUT’ | |
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| IOB #2: Name = CLKIN’ | ||
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Horizontal ellipsis . . . | Repetitive material that has | allow block block_name | ||
been omitted | loc1 loc2 ... locn; | |||
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Online Document
The following conventions are used in this document:
Convention | Meaning or Use | Example | |
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| See the section “Additional | |
Blue text | Resources” for details. | ||
in the current document | Refer to “Title Formats” in | ||
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| Chapter 1 for details. | |
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Red text | See Figure | ||
in another document | Handbook. | ||
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Blue, underlined text | Hyperlink to a website (URL) | Go to http://www.xilinx.com | |
for the latest speed files. | |||
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6 | www.xilinx.com |
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| UG078 (v1.2) May 24, 2006 |