ModelSim SE User's Manual - Electrical and Computer Engineering

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UM-36 1 - Introduction Technical support and updates ModelSim SE User’s Manual Support Model Technology online and email technical support options, maintenance renewal, and links to international support contacts: www.model.com/support/default.asp Mentor Graphics support: www.mentor.com/supportnet Updates Access to the most current version of ModelSim: www.model.com/downloads/default.asp Latest version email Place your name on our list for email notification of news and updates: www.model.com/products/informant.asp
2 - Projects Chapter contents Introduction . . . . . . . . . . . . . . . . UM-38 What are projects?. . . . . . . . . . . . . . UM-38 What are the benefits of projects?. . . . . . . . . . UM-38 Project conversion between versions . . . . . . . . . UM-39 Getting started with projects . . . . . . . . . . . . UM-40 Step 1 — Creating a new project . . . . . . . . . . UM-40 Step 2 — Adding items to the project. . . . . . . . . UM-41 Step 3 — Compiling the files . . . . . . . . . . . UM-41 Step 4 — Simulating a design. . . . . . . . . . . UM-41 Other basic project operations. . . . . . . . . . . UM-44 The Project tab . . . . . . . . . . . . . . . . UM-45 Sorting the list . . . . . . . . . . . . . . . UM-45 Changing compile order . . . . . . . . . . . . UM-46 Changing compile order . . . . . . . . . . . . . UM-46 Auto-generating compile order . . . . . . . . . . UM-46 Grouping files . . . . . . . . . . . . . . . UM-47 Creating a Simulation Configuration . . . . . . . . . . UM-48 Optimization Configurations . . . . . . . . . . . UM-49 Organizing projects with folders . . . . . . . . . . . UM-50 Specifying file properties and project settings . . . . . . . . UM-52 File compilation properties . . . . . . . . . . . UM-52 Project settings . . . . . . . . . . . . . . UM-54 Accessing projects from the command line . . . . . . . . UM-55 This chapter discusses ModelSim projects. Projects simplify the process of compiling and simulating a design and are a great tool for getting started with ModelSim. UM-37 ModelSim SE User’s Manual
Page 1 and 2: ModelSim® Advanced Verification an
Page 3 and 4: Table of Contents 1 - Introduction
Page 5 and 6: Delta delays . . . . . . . . . . .
Page 7 and 8: ModelSim Verilog system tasks and f
Page 9 and 10: VHDL: instantiating SystemC . . . .
Page 11 and 12: Creating waveforms from patterns .
Page 13 and 14: 14 - PSL Assertions (UM-359) What a
Page 15 and 16: 17 - Signal Spy (UM-417) Introducti
Page 17 and 18: Starting the debugger . . . . . . .
Page 19 and 20: Steps in flow . . . . . . . . . . .
Page 21 and 22: 1 - Introduction Chapter contents M
Page 23 and 24: ModelSim simulation task overview M
Page 25 and 26: Basic steps for simulation UM-25 Li
Page 27 and 28: ModelSim modes of operation ModelSi
Page 29 and 30: ModelSim graphic interface overview
Page 31 and 32: Sections in this document Sections
Page 33 and 34: Sections in this document UM-33 H -
Page 35: Where to find our documentation Whe
Page 39 and 40: Project conversion between versions
Page 41 and 42: workspace Getting started with proj
Page 43 and 44: Step 3 — Compiling the files Gett
Page 45 and 46: The Project tab Sorting the list Th
Page 47 and 48: Grouping files Changing compile ord
Page 49 and 50: Optimization Configurations Creatin
Page 51 and 52: Organizing projects with folders UM
Page 53 and 54: Specifying file properties and proj
Page 55 and 56: Accessing projects from the command
Page 57 and 58: 3 - Design libraries Chapter conten
Page 59 and 60: Archives Design library overview UM
Page 61 and 62: Managing library contents Working w
Page 63 and 64: Moving a library Working with desig
Page 65 and 66: Alternate IEEE libraries supplied R
Page 67 and 68: Referencing source files with locat
Page 69 and 70: Importing FPGA libraries Importing
Page 71 and 72: 4 - VHDL simulation Chapter content
Page 73 and 74: Compiling VHDL files Creating a des
Page 75 and 76: Differences between language versio
Page 77 and 78: Compiling VHDL files UM-77 bit stri
Page 79 and 80: Default binding Simulating VHDL des
Page 81 and 82: Simulating VHDL designs UM-81 In th
Page 83 and 84: Creating an elaboration file Loadin
Page 85 and 86: Example Simulating with an elaborat
Page 87 and 88:
Controlling checkpoint file compres
Page 89 and 90:
Using STD_INPUT and STD_OUTPUT with
Page 91 and 92:
Reading and writing hexadecimal num
Page 93 and 94:
VITAL specification and source code
Page 95 and 96:
Compiling and simulating with accel
Page 97 and 98:
init_signal_driver() init_signal_sp
Page 99 and 100:
to_time() Util package UM-99 to_tim
Page 101 and 102:
Modeling memory ’87 and ’93 exa
Page 103 and 104:
if (mwrite = '1') then ram(address)
Page 105 and 106:
BEGIN return mem(to_integer(addr));
Page 107 and 108:
BEGIN FOR i IN 0 TO 1023 LOOP we
Page 109 and 110:
Converting an integer into a bit_ve
Page 111 and 112:
5 - Verilog simulation Chapter cont
Page 113 and 114:
Introduction ModelSim Verilog basic
Page 115 and 116:
Incremental compilation Compiling V
Page 117 and 118:
Library usage Compiling Verilog fil
Page 119 and 120:
Verilog-XL compatible compiler argu
Page 121 and 122:
Compiling Verilog files UM-121 The
Page 123 and 124:
Verilog generate statements Compili
Page 125 and 126:
Naming the optimized design Optimiz
Page 127 and 128:
Optimizing Verilog designs UM-127 I
Page 129 and 130:
Simulating Verilog designs Simulato
Page 131 and 132:
`timescale, -t, and rounding Simula
Page 133 and 134:
Simulating Verilog designs UM-133 T
Page 135 and 136:
Simulating Verilog designs UM-135 M
Page 137 and 138:
+pulse_e_style_onevent +pulse_int_e
Page 139 and 140:
Creating an elaboration file Loadin
Page 141 and 142:
Example Simulating with an elaborat
Page 143 and 144:
Controlling checkpoint file compres
Page 145 and 146:
Distributed delay mode In distribut
Page 147 and 148:
System tasks and functions UM-147 a
Page 149 and 150:
File I/O tasks $fclose $fopen $fwri
Page 151 and 152:
System tasks and functions UM-151 T
Page 153 and 154:
Compiler directives Compiler direct
Page 155 and 156:
ModelSim compiler directives The fo
Page 157 and 158:
Determining which memories were imp
Page 159 and 160:
6 - SystemC simulation Chapter cont
Page 161 and 162:
Supported platforms and compiler ve
Page 163 and 164:
Usage flow for SystemC-only designs
Page 165 and 166:
Code modification examples Compilin
Page 167 and 168:
Example 3 Compiling SystemC files U
Page 169 and 170:
Restrictions on compiling with HP a
Page 171 and 172:
Issues with C++ templates Templatiz
Page 173 and 174:
Simulating SystemC designs Loading
Page 175 and 176:
Initialization and cleanup of Syste
Page 177 and 178:
Waveform compare Debugging the desi
Page 179 and 180:
Debugging the design UM-179 The gdb
Page 181 and 182:
Viewing FIFOs SystemC object and ty
Page 183 and 184:
OSCI 2.1 features supported Differe
Page 185 and 186:
Troubleshooting SystemC errors UM-1
Page 187 and 188:
7 - Mixed-language simulation Chapt
Page 189 and 190:
Usage flow for mixed-language simul
Page 191 and 192:
Simulator resolution limit Runtime
Page 193 and 194:
Mapping data types Verilog to VHDL
Page 195 and 196:
VHDL to Verilog mappings Mapping da
Page 197 and 198:
Channels Ports Verilog mapping sc_b
Page 199 and 200:
Verilog sc_logic sc_bit bool SuX 'X
Page 201 and 202:
SystemC VHDL sc_int, sc_uint bit_ve
Page 203 and 204:
VHDL: instantiating Verilog Verilog
Page 205 and 206:
The generic type is determined by t
Page 207 and 208:
Verilog: instantiating VHDL VHDL in
Page 209 and 210:
SystemC: instantiating Verilog Veri
Page 211 and 212:
Example #2 SystemC: instantiating V
Page 213 and 214:
}; } #endif // Connect ports chip->
Page 215 and 216:
Example of parameter use format_cha
Page 217 and 218:
SystemC: instantiating VHDL VHDL in
Page 219 and 220:
Example SystemC: instantiating VHDL
Page 221 and 222:
); END ringbuf; ARCHITECTURE RTL OF
Page 223 and 224:
vgencomp component declaration vgen
Page 225 and 226:
8 - WLF files (datasets) and virtua
Page 227 and 228:
Saving a simulation to a WLF file O
Page 229 and 230:
Managing multiple datasets WLF file
Page 231 and 232:
Saving at intervals with Dataset Sn
Page 233 and 234:
Virtual Objects (User-defined buses
Page 235 and 236:
Virtual regions Virtual types Virtu
Page 237 and 238:
9 - Waveform analysis Chapter conte
Page 239 and 240:
Introduction Objects you can view W
Page 241 and 242:
Wave window overview UM-241 Here is
Page 243 and 244:
List window overview List window ov
Page 245 and 246:
Measuring time with cursors in the
Page 247 and 248:
Jumping to a signal transition Meas
Page 249 and 250:
Zooming the Wave window display Zoo
Page 251 and 252:
Searching in the Wave and List wind
Page 253 and 254:
Using the Expression Builder for ex
Page 255 and 256:
Formatting the Wave window Setting
Page 257 and 258:
Formatting the Wave window UM-257 3
Page 259 and 260:
Formatting the List window Setting
Page 261 and 262:
Saving the window format Saving the
Page 263 and 264:
Saving List window data to a file S
Page 265 and 266:
Configuring new line triggering in
Page 267 and 268:
Configuring new line triggering in
Page 269 and 270:
Miscellaneous tasks Examining wavef
Page 271 and 272:
Comparison Wizard Waveform Compare
Page 273 and 274:
Test Dataset Waveform Compare UM-27
Page 275 and 276:
Adding regions Waveform Compare UM-
Page 277 and 278:
Clocked comparison Waveform Compare
Page 279 and 280:
Viewing differences in the Wave win
Page 281 and 282:
Compare icons Waveform Compare UM-2
Page 283 and 284:
Comparing hierarchical and flattene
Page 285 and 286:
10 - Generating stimulus with Wavef
Page 287 and 288:
Getting started You can use Wavefor
Page 289 and 290:
Creating waveforms from patterns Cr
Page 291 and 292:
Editing waveforms GR-291 These comm
Page 293 and 294:
Simulating directly from waveform e
Page 295 and 296:
Driving simulation with the saved s
Page 297 and 298:
Saving the waveform editor commands
Page 299 and 300:
11 - Tracing signals with the Dataf
Page 301 and 302:
Adding objects to the window Adding
Page 303 and 304:
Exploring the connectivity of your
Page 305 and 306:
Zooming and panning Zooming with to
Page 307 and 308:
Tracing the source of an unknown (X
Page 309 and 310:
Finding objects by name in the Data
Page 311 and 312:
Printing on Windows platforms Selec
Page 313 and 314:
Symbol mapping Symbol mapping UM-31
Page 315 and 316:
Configuring window options Configur
Page 317 and 318:
12 - Profiling performance and memo
Page 319 and 320:
Getting started Memory allocation p
Page 321 and 322:
Enabling the statistical sampling p
Page 323 and 324:
Interpreting profiler data Interpre
Page 325 and 326:
The Call Tree view Viewing profiler
Page 327 and 328:
Viewing profile details Viewing pro
Page 329 and 330:
Integration with Source windows Int
Page 331 and 332:
Reporting profiler results Reportin
Page 333 and 334:
13 - Measuring code coverage Chapte
Page 335 and 336:
Supported types ModelSim code cover
Page 337 and 338:
Enabling code coverage Enabling cod
Page 339 and 340:
Enabling code coverage UM-339 Next,
Page 341 and 342:
Viewing coverage data in the Source
Page 343 and 344:
Toggle coverage Enabling Toggle cov
Page 345 and 346:
3 Produce the report with the toggl
Page 347 and 348:
Excluding objects from coverage Exc
Page 349 and 350:
end instance Default filter file Ex
Page 351 and 352:
XML output Reporting coverage data
Page 353 and 354:
Instance report with line details R
Page 355 and 356:
Coverage statistics details Conditi
Page 357 and 358:
Coverage statistics details UM-357
Page 359 and 360:
14 - PSL Assertions Chapter content
Page 361 and 362:
PSL assertion language What are ass
Page 363 and 364:
Using cover directives Using assert
Page 365 and 366:
REF2); signal mem_state : memory_st
Page 367 and 368:
} // Check the write cycle property
Page 369 and 370:
Multi-clocked properties and defaul
Page 371 and 372:
Using endpoints in HDL code Example
Page 373 and 374:
Restrictions Clocking endpoints Usi
Page 375 and 376:
Compiling and simulating assertions
Page 377 and 378:
Enabling/disabling failure and pass
Page 379 and 380:
Setting failure and pass limits Man
Page 381 and 382:
Reporting on assertions Reporting o
Page 383 and 384:
15 - Functional coverage with PSL a
Page 385 and 386:
Compiling and simulating functional
Page 387 and 388:
Weighting coverage directives Confi
Page 389 and 390:
Viewing coverage directives in the
Page 391 and 392:
Reporting functional coverage stati
Page 393 and 394:
Tag Meaning Understanding aggregate
Page 395 and 396:
Saving functional coverage data Sav
Page 397 and 398:
Clearing functional coverage data C
Page 399 and 400:
16 - C Debug Chapter contents Intro
Page 401 and 402:
Supported platforms and gdb version
Page 403 and 404:
Setting breakpoints Setting breakpo
Page 405 and 406:
Stepping in C Debug Stepping in C D
Page 407 and 408:
Identifying all registered function
Page 409 and 410:
Auto find bp versus Auto step mode
Page 411 and 412:
Debugging functions during elaborat
Page 413 and 414:
VPI functions in initialization mod
Page 415 and 416:
C Debug command reference C Debug c
Page 417 and 418:
17 - Signal Spy Chapter contents In
Page 419 and 420:
init_signal_driver Call only once S
Page 421 and 422:
Example library IEEE, modelsim_lib;
Page 423 and 424:
Arguments Related procedures Limita
Page 425 and 426:
signal_force Syntax Returns Argumen
Page 427 and 428:
signal_release Syntax Returns Argum
Page 429 and 430:
$init_signal_driver Call only once
Page 431 and 432:
Example `timescale 1 ps / 1 ps modu
Page 433 and 434:
Related tasks Limitations Example N
Page 435 and 436:
Related tasks Limitations Example N
Page 437 and 438:
Example module testbench; reg relea
Page 439 and 440:
18 - Standard Delay Format (SDF) Ti
Page 441 and 442:
SDF specification with the GUI Erro
Page 443 and 444:
Resolving errors VHDL VITAL SDF UM-
Page 445 and 446:
Examples Optional arguments can be
Page 447 and 448:
REMOVAL is matched to $removal: SDF
Page 449 and 450:
Optional conditions Timing check po
Page 451 and 452:
Interconnect delays Interconnect de
Page 453 and 454:
Mistaking a component or module nam
Page 455 and 456:
19 - Value Change Dump (VCD) Files
Page 457 and 458:
Checkpoint/restore and writing VCD
Page 459 and 460:
Example 3 — Mixed-HDL design Firs
Page 461 and 462:
ModelSim VCD commands and VCD tasks
Page 463 and 464:
A VCD file from source to output VH
Page 465 and 466:
x) x* x+ x, $end #300 $dumpon 1! 0"
Page 467 and 468:
Capturing port driver data Supporte
Page 469 and 470:
Example VCD output from vcd dumppor
Page 471 and 472:
20 - Tcl and macros (DO files) Chap
Page 473 and 474:
Tcl commands Tcl commands UM-473 Fo
Page 475 and 476:
Tcl command syntax UM-475 7 If a wo
Page 477 and 478:
set command syntax Tcl command synt
Page 479 and 480:
Variable substitution System comman
Page 481 and 482:
ModelSim Tcl time commands Conversi
Page 483 and 484:
Tcl examples This is an example of
Page 485 and 486:
} if {$windowName == ""} { # Dialog
Page 487 and 488:
Macros (DO files) Creating DO files
Page 489 and 490:
set vFilesExist 1 } shift } if {$vh
Page 491 and 492:
Using the Tcl source command with D
Page 493 and 494:
The Tcl Debugger Starting the debug
Page 495 and 496:
Breakpoints The Tcl Debugger UM-495
Page 497 and 498:
TclPro Debugger TclPro Debugger UM-
Page 499 and 500:
A - ModelSim GUI changes Appendix c
Page 501 and 502:
Main window changes UM-501 See "Cus
Page 503 and 504:
Main window changes UM-503 File > O
Page 505 and 506:
View menu The View menu has been re
Page 507 and 508:
Tools menu The 6.0 Main window Tool
Page 509 and 510:
List window changes File menu The L
Page 511 and 512:
File menu See "Memory windows" (GR-
Page 513 and 514:
View menu The Memory window > View
Page 515 and 516:
Edit menu The Signals window > Edit
Page 517 and 518:
View menu The Source window > File
Page 519 and 520:
B - ModelSim variables Appendix con
Page 521 and 522:
Environment variables Environment v
Page 523 and 524:
Library mapping with environment va
Page 525 and 526:
[Library] library path variables Va
Page 527 and 528:
[vcom] VHDL compiler control variab
Page 529 and 530:
[vsim] simulator control variables
Page 531 and 532:
Preference variables located in INI
Page 533 and 534:
Page 535 and 536:
Page 537 and 538:
Commonly used INI variables Prefere
Page 539 and 540:
Force command defaults Preference v
Page 541 and 542:
Variable precedence Variable preced
Page 543 and 544:
Special considerations for the now
Page 545 and 546:
C - Error and warning messages Appe
Page 547 and 548:
ModelSim message system UM-547 Ther
Page 549 and 550:
Exit codes The table below describe
Page 551 and 552:
Miscellaneous messages Miscellaneou
Page 553 and 554:
Miscellaneous messages UM-553 model
Page 555 and 556:
VSIM license lost Message text Cons
Page 557 and 558:
Suggested action Multiply defined s
Page 559 and 560:
D - Verilog PLI / VPI / DPI Chapter
Page 561 and 562:
Registering PLI applications Regist
Page 563 and 564:
Registering VPI applications Exampl
Page 565 and 566:
Registering DPI applications Regist
Page 567 and 568:
For Windows only: Run a preliminary
Page 569 and 570:
32-bit Linux platform Compiling and
Page 571 and 572:
gcc compiler gcc -c -I//modeltech/i
Page 573 and 574:
For DPI imports 64-bit IBM RS/6000
Page 575 and 576:
32-bit Linux platform Compiling and
Page 577 and 578:
64-bit Solaris platform Compiling a
Page 579 and 580:
64-bit IBM RS/6000 platform DPI spe
Page 581 and 582:
Loading shared objects with global
Page 583 and 584:
VPI example The following example i
Page 585 and 586:
The PLI callback reason argument Th
Page 587 and 588:
The sizetf callback function The si
Page 589 and 590:
Third party PLI applications Third
Page 591 and 592:
IEEE Std 1364 ACC routines IEEE Std
Page 593 and 594:
IEEE Std 1364 TF routines IEEE Std
Page 595 and 596:
SystemVerilog DPI access routines S
Page 597 and 598:
Verilog-XL compatible routines Veri
Page 599 and 600:
PLI/VPI tracing The purpose of trac
Page 601 and 602:
Debugging PLI/VPI/DPI application c
Page 603 and 604:
E - ModelSim shortcuts Appendix con
Page 605 and 606:
Main and Source window mouse and ke
Page 607 and 608:
Keystrokes - UNIX Keystrokes - Wind
Page 609 and 610:
Wave window mouse and keyboard shor
Page 611 and 612:
F - System initialization Appendix
Page 613 and 614:
Environment variables accessed duri
Page 615 and 616:
Initialization sequence Initializat
Page 617 and 618:
G - Logic Modeling SmartModels Appe
Page 619 and 620:
Creating foreign architectures with
Page 621 and 622:
Vector ports Entity details VHDL Sm
Page 623 and 624:
SmartModel Windows VHDL SmartModel
Page 625 and 626:
Verilog SmartModel interface Verilo
Page 627 and 628:
H - Logic Modeling hardware models
Page 629 and 630:
Creating foreign architectures with
Page 631 and 632:
Vector ports Architecture details V
Page 633 and 634:
End-User License Agreement IMPORTAN
Page 635 and 636:
COMPLIED WITH THIS AGREEMENT. MENTO
Page 637 and 638:
Graphics shall only use or disclose
Page 639 and 640:
Index CR = Command Reference, UM =
Page 641 and 642:
Stop on quit mode UM-414 C Debug se
Page 643 and 644:
mem search CR-204 modelsim CR-206 n
Page 645 and 646:
ange checking in VHDL CR-316, UM-74
Page 647 and 648:
Add Folder GR-47 C Debug setup GR-9
Page 649 and 650:
F -f CR-360 F8 function key UM-607
Page 651 and 652:
Verilog modules UM-125 VHDL subprog
Page 653 and 654:
Memory window GR-169 GUI changes UM
Page 655 and 656:
optimizing Verilog designs design o
Page 657 and 658:
eaders and drivers UM-303 readers c
Page 659 and 660:
adix specifying for examine CR-163
Page 661 and 662:
system tasks VCD UM-461 Verilog UM-
Page 663 and 664:
U -u CR-365 unbound component GR-53
Page 665 and 666:
library clause UM-64 mixed designs
Page 667 and 668:
text editing UM-605 windows Active
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