The Designer's Guide to VHDL
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1.5. rezultāts no 5.
Booleans One of the most important predefined enumeration types in VHDL is
the type boolean, defined as type boolean is (false, true); This type is used to
represent condition values, which can control execution of a behavioral model.
FIGURE 2-3 A B A and B A nand B A or B A nor B A xor B A xnor B false false true
true false true false true false false false true true true true false false true true true
true false false false false true true false true false false true The truth table for ...
If the first condition is false, the second condition is evaluated, and if it evaluates
to true, the statement after the second then keyword is executed. If the second
condition is false, the statement after the else keyword is executed. In general, we
...
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Saturs
29 | |
57 | |
85 | |
107 | |
A Pipelined Multiplier Accumulator | 167 |
Chapter 7 Subprograms | 195 |
Chapter 8 Packages and Use Clauses | 231 |
Chapter 9 Aliases | 257 |
Chapter 18 Files and InputOutput | 515 |
Queuing Networks | 549 |
Chapter 20 Attributes and Groups | 585 |
Chapter 21 Miscellaneous Topics | 615 |
Chapter A Synthesis | 639 |
Chapter B The Predefined Package Standard | 655 |
Chapter C IEEE Standard Packages | 659 |
Chapter D Related Standards | 671 |
A BitVector Arithmetic Package | 267 |
Chapter 11 Resolved Signals | 285 |
Chapter 12 Generic Constants | 309 |
Chapter 13 Generic Constants Components and Configurations | 317 |
Chapter 14 Generate Statements | 349 |
The DLX Computer System | 373 |
Chapter 16 Guards and Blocks | 459 |
Chapter 17 Access Types and Abstract Data Types | 487 |
Chapter E VHDL Syntax | 683 |
Chapter F Differences among VHDL87 VHDL93 and VHDL2001 | 697 |
Chapter G Answers to Exercises | 703 |
Chapter H Software Guide | 723 |
References | 743 |
Index | 745 |
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