VHDL 2008: Just the New Stuff > 디지털 논리

Preface ix
Enhanced Generics 1
Generic Types 1
Generic Lists in Packages 6
Local Packages 11
Generic Lists in Subprograms 15
Generic Subprograms 21
Uninstantiated Methods in Protected Types 32
Generic Packages 36
Use Case: Generic Memories 43
Other Major Features 53
External Names 53
Force and Release 63
Context Declarations 67
Integrated PSL 70
IP Encryption 77
Key Exchange 96
VHDL Procedural Interface (VHPI) 97
Direct Binding 97
Tabular Registration and Indirect Binding 99
Registration of Applications and Libraries 101
Type System Changes 103
Unconstrained Element Types 103
Composite Types 103
Subtype Indications and Constraints 107
Use of Composite Subtypes 109
Variable and Signal Declarations 110
Constant Declarations 110
Attribute Specifications 111
Allocated Objects 111
Interface Objects 112
Summary: Determining Array Index Ranges 117
Type Conversions 118
Alias Declarations and Subtype Attributes 119
Resolved Composite Subtypes 122
Resolved Elements 123
New and Changed Operations 127
Array/Scalar Logical Operations 127
Array/Scalar Addition Operators 129
Logical Reduction Operators 130
Condition Operator 132
Matching Relational Operators 133
Maximum and Minimum 138
Mod and Rem for Physical Types 140
Shift Operations 141
Strength Reduction and \'X\' Detection 142
New and Changed Statements 143
Conditional and Selected Assignments 143
Sequential Signal Assignments 143
Forcing Assignments 146
Variable Assignments 147
Matching Case Statements 149
Matching Selected Assignments 150
If and Case Generate 151
Configuration of If and Case Generate 155
Modeling Enhancements 159
Signal Expressions in Port Maps 159
All Signals in Sensitivity List 161
Reading Out-Mode Ports and Parameters 162
Slices in Aggregates 166
Bit-String Literals 167
Improved I/O 169
The To_String Functions 169
Predefined To_string Functions 170
Overloaded To_string Functions 171
The To_ostring and To_hstring Functions 172
The Justify Function 173
Newline Formatting 173
Read and Write Operations 174
The Tee Procedure 177
The Flush Procedure 178
Standard Packages 179
The Std_logic_1 164 Package 179
The Numeric_bit and Numeric_std Packages 180
The Numeric Unsigned Packages 182
The Fixed-Point Math Packages 182
The Floating-Point Math Packages 186
The Standard Package 191
The Env Package 192
Operator Overloading Summary 193
Conversion Function Summary 196
Strength Reduction Function Summary 204
Miscellaneous Changes 207
Referencing Generics in Generic Lists 207
Function Return Subtype 208
Qualified Expression Subtype 209
Type Conversions 209
Case Expression Subtype 211
Subtypes for Port and Parameter Actuals 212
Static Composite Expressions 213
Static Ranges 214
Use Clauses, Types, and Operations 215
Hiding of Implicit Operations 216
Multidimensional Array Alias 217
Others in Aggregates 217
Attribute Specifications in Package Bodies 219
Attribute Specification for Overloaded Subprograms 219
Integer Expressions in Range Bounds 220
Action on Assertion Violations 221
\'Path_Name and \'Instance_Name 221
Non-Nesting of Architecture Region 223
Purity of Now 223
Delimited Comments 224
Tool Directives 225
New Reserved Words 225
Replacement Characters 226
What\'s Next 229
Object-Oriented Class Types 229
Standard Components Library 232
Randomization 232
Functional Coverage 235
Alternatives 235
Getting Involved 235
Index 237