識別子ってのは、moduleやtaskやfunctionやport やparameterやregやwireやintegerなどの名前に使えるやつですね。Verilogで使える識別子はどんな決まりがあるんでしょう。少し調べてみました。
IEEE Std. 1364-2005 から、文法をおっていくと、
simple_identifier ::= [ a-zA-Z_ ] { [ a-zA-Z0-9_$ ] }
という定義に行きつきます。これは、先頭の1文字が、a～z、A～Z、_のどれかで、そのあとに続く文字(0文字以上)が、a～z、A～Z、_、0～9、$のどれかということを表しています。つまり、moduleやtaskや（中略）integerなどの名前には、
- a
- ayano123
- Apple
- A_$_$_$_
なんかが、指定できるってことですね。
$はあまりなじみがないですが、先頭は数字がダメでアルファベットと「_」という組み合わせが識別子というのは一般的ではないかと思います。実際にコード書いてる人はあたりまえですね。
実は、Verilogではさらに異なった書式の識別子が記述できます。文法をおっていくと、
identifier ::=
simple_identifier
| escaped_identifier
おおもとの識別子の定義は実はこんな感じで。すでに書いたsimple_identifierに加えて、escaped_identifierというのも識別子に使えます。その定義は、
escaped_identifier ::= \ {Any_ASCII_character_except_white_space} white_space
となっています。どういうことかというと、\（バックスラッシュ）から初めて、white_space（スペース、TAB、改行、EOF）を除くASCII文字、最後がwhite_spaceという書式も識別子になると。
つまり、次のようなのもmoduleや（中略）に使えます。
- \(>_<)/~~
- \$display(“hello”);
- \”
- \//comment
- \write_addr[10:0]
など！ 上の例は、いずれも最後にスペースが入っています。次のようなコードもばっちり動きます。
module \\\ ;
initial begin : \:
integer \\ ;
integer \; ;
\; = 0;
for (\\ = 1; \\ <= 10; \\ = \\ + 1)
\; = \; + \\ ;
$display(\; );
end
endmodule 1から10までの足し算。実際に自分で使うことはないと思うけど、ツールが吐き出すコードは使っていることがあるような気がします。知っておくとよいかも知れませんね。
フィードバック
# WzGZnWBKRKHIfbmuSLG
2014/07/19 4:42 by
robylF Very good blog.Much thanks again. Really Great.
# bFzCOXZfFWWSESsg
2014/08/05 5:49 by
1NGOBz I appreciate you sharing this article. Awesome.
# ctmrhWxdSD
2014/08/07 9:32 by
ngYB19 Major thankies for the blog article.Thanks Again. Much obliged.
# EeYAeVqcfpOcH
2014/09/09 20:32 by
Would you be interested in exchanging hyperlinks?
# re: Internet Explorer 11 で、右クリックしたときに表示されるメニューで、Bingではなく、Google をデフォルトの検索エンジンとして設定するには？
2017/12/08 18:14 by
# yHwRktbwoo
2018/08/16 9:46 by
7UsC2y This blog is without a doubt entertaining additionally informative. I have picked many handy things out of this source. I ad love to return again soon. Thanks a lot!
# zdQYjkmnTMCd
2018/08/17 22:15 by
I saw a lot of website but I conceive this one has something extra in it.
# krVBeIWQsXRAHGdWW
2018/08/17 23:56 by
Merely a smiling visitor here to share the love (:, btw great design and style.
# HJlrdoFYOqhMOuOYq
2018/08/18 6:38 by
Spot on with this write-up, I actually feel this site needs a great deal more attention. I all probably be back again to read more, thanks for the information!
# dTLCYnbZidZWNVNb
2018/08/18 7:32 by
Wonderful site. Plenty of helpful information here. I am sending it to a few buddies ans also sharing in delicious. And certainly, thanks in your effort!
# yFXuscEpJJhbw
2018/08/21 21:36 by
You are my breathing in, I own few web logs and occasionally run out from brand . Analyzing humor is like dissecting a frog. Few people are interested and the frog dies of it. by E. B. White.
# FkNnQcuUzkTBfhMbmkQ
2018/08/23 17:18 by
Regards for helping out, great info. I have witnessed the softening of the hardest of hearts by a simple smile. by Goldie Hawn.
# qNcIKNoaicSiwWbG
2018/08/23 19:49 by
Professor Baiks dbproplan celine bags outlet
# JqdGXesbAMVTPIoY
2018/08/24 5:50 by
I'а?ve learn some just right stuff here. Definitely price bookmarking for revisiting. I wonder how much effort you set to make the sort of great informative website.
# riGkfSjeXIHWmilhZe
2018/08/24 17:11 by
I was suggested this website by my cousin. I am not sure whether this post is written by him as no one else know such detailed about my difficulty. You are amazing! Thanks!
# rjaZhiPvVdxGhQJ
2018/08/27 20:58 by
Your typical military officer is a person with extensiveknowledge of history, particularly military history, and who takesoaths and honor seriously.
# oVHPNFtPyZ
2018/08/28 11:37 by
Thanks for the article post.Thanks Again. Really Great.
# maOOTrPSVZVWbiMBbE
2018/08/28 19:52 by
This site was how do I say it? Relevant!! Finally I have found something which helped me. Many thanks!
# ucwRqizoZLfpvShfg
2018/08/28 21:17 by
Wow, fantastic blog layout! How long have you been blogging for? you make blogging look easy. The overall look of your website is wonderful, let alone the content!
# qmYCSRivbh
2018/08/28 22:39 by
Thanks for the article post.Really looking forward to read more. Really Great.
# CoENpqzCRyoQ
2018/08/29 9:35 by
kind of pattern is usually seen in Outlet Gucci series. A good example is the best.
# fibEcLMcbgopS
2018/08/29 20:33 by
You can certainly see your enthusiasm in the paintings you write. The world hopes for more passionate writers like you who aren at afraid to mention how they believe. Always go after your heart.
# JoYOmiuDlwZ
2018/08/29 22:07 by
Whoa! This blog looks just like my old one! It as on a totally different topic but it has pretty much the same layout and design. Excellent choice of colors!
# iqGvqyKIZDuYx
2018/08/30 21:09 by
Thanks-a-mundo for the blog post.Thanks Again.
# OkczMqZFsnGTYGH
2018/08/31 4:15 by
Your style is so unique compared to other people I ave read stuff from. I appreciate you for posting when you have the opportunity, Guess I will just book mark this web site.
# YXqFeLAkcD
2018/08/31 17:46 by
What type of digicam was used? That is definitely a really good good quality.
# YcntZKcZbCBsnLpnj
2018/09/01 11:38 by
It as really very complicated in this active life to listen news on Television, therefore I simply use the web for that purpose, and get the most recent information.
# wMDxOQeQSgZ
2018/09/01 18:12 by
Some truly quality posts on this site, bookmarked.
# iVDqQsUyYS
2018/09/03 17:10 by
May you please prolong them a bit from next time? Thanks for the post.
# EMvORdgLmJZOkxFBS
2018/09/04 0:20 by
Im no pro, but I feel you just crafted an excellent point. You certainly understand what youre talking about, and I can really get behind that. Thanks for staying so upfront and so truthful.
# MUKqWVBSKKfxUHDjJW
2018/09/05 7:14 by
The Hargrove clip was part of the biggest obstacles for Michael Kors Handbags Outlet and it
# QyPQwysxEIUgpT
2018/09/06 14:13 by
My brother suggested I might like this web site. He was entirely right. This post truly made my day. You cann at imagine simply how much time I had spent for this information! Thanks!
# GmYQNRoEOnsGUIfKf
2018/09/06 17:31 by
Moreover, The contents are masterpiece. you have performed a wonderful activity in this subject!
# WJdeuhqWjYv
2018/09/06 22:29 by
Well I truly enjoyed reading it. This subject offered by you is very effective for correct planning.
# UAhyNHHTFQRc
2018/09/10 20:49 by
I truly appreciate this post. I have been looking all over for this! Thank goodness I found it on Bing. You have made my day! Thx again!
# hWBuItiUruUA
2018/09/10 20:49 by
We could have a hyperlink alternate contract among us
# xASBVkhJUHkbFov
2018/09/12 3:10 by
Well I definitely enjoyed reading it. This information offered by you is very effective for good planning.
# kucAfYUbfo
2018/09/12 16:38 by
This is one awesome article post.Thanks Again. Really Great.
# GPulPYJIqDe
2018/09/12 18:15 by
Im obliged for the article.Really looking forward to read more. Great.
# hVOGgQOuvkIF
2018/09/12 21:28 by
to mine. Please blast me an email if interested.
# KyWWxjCAwlQINdatw
2018/09/13 0:38 by
Thanks-a-mundo for the article.Really looking forward to read more. Great.
# NpvaWLivNEsRoDImMv
2018/09/13 3:48 by
you are really a good webmaster. The site loading speed is amazing. It seems that you are doing any unique trick. Also, The contents are masterpiece. you have done a magnificent job on this topic!
# wsDRGSKJcCysPf
2018/09/13 12:57 by
visiting this web site and be updated with the hottest information posted here.
# lcMwNTZVxduv
2018/09/13 20:54 by
This awesome blog is no doubt entertaining as well as diverting. I have found many handy tips out of this blog. I ad love to come back again and again. Thanks a lot!
# qkkRTDNuGLjq
2018/09/14 1:44 by
Im obliged for the post.Really looking forward to read more. Much obliged.
# yvCfIDurvwp
2018/09/14 17:21 by
There as definately a great deal to learn about this subject. I love all the points you ave made.
# kKlvolJjTURKUbxUZc
2018/09/17 21:24 by
Thanks-a-mundo for the article.Really looking forward to read more. Much obliged.
# zaXUpNFdwHqSjfzNpuA
2018/09/18 15:20 by
I was recommended this blog by my cousin. I am not sure whether this post is written by him as no one else know such detailed about my problem. You are incredible! Thanks!
# ERbXfQSnNym
2018/09/21 16:49 by
Thanks, I have been hunting for details about this subject for ages and yours is the best I ave found so far.
# jxLIIrCdoZjdtQy
2018/09/21 21:54 by
Informative and precise Its difficult to find informative and precise information but here I found
# ouhffpCqtj
2018/09/21 23:55 by
Looking forward to reading more. Great article post.Really looking forward to read more. Much obliged.
# rULoWeNyvAwJC
2018/09/25 21:05 by
That is a good tip particularly to those new to the blogosphere. Brief but very accurate information Many thanks for sharing this one. A must read post!
# sWmzIwVpOa
2018/09/26 6:11 by
more enjoyable for me to come here and visit more often.
# BbRlXmblNLAfKJ
2018/09/27 19:09 by
Very good article. I am facing many of these issues as well..
# PcjgxhKjjshgneX
2018/10/02 6:57 by
Looking forward to reading more. Great article post.Thanks Again. Fantastic.
# NmfkiAjaigt
2018/10/02 7:30 by
Your means of explaining all in this piece of writing is genuinely fastidious, all can without difficulty be aware of it, Thanks a lot.
# YnsGlynwcVEJQKCD
2018/10/02 23:06 by
This is getting a bit more subjective, but I much prefer the Zune Marketplace.
# rlXYgxvvFolhUHAvBaT
2018/10/04 6:36 by
Major thanks for the blog.Thanks Again. Great.
# BPYkzXFCvpJw
2018/10/04 18:01 by
Very neat blog.Much thanks again. Really Great.
# dqfkoIwIFXJhqp
2018/10/05 20:55 by
Pretty! This has been a really wonderful article. Thanks for supplying this info.
# WWPoXRCygjztbhEo
2018/10/06 5:44 by
IaаАа?б?ТТ?а?а?аАа?б?ТТ?аБТ?m a extended time watcher and I just believed IaаАа?б?ТТ?а?а?аАа?б?ТТ?аБТ?d drop by and say hi there there for your extremely initially time.
# eidOMJxmYvYXdUnxWE
2018/10/06 8:43 by
I think other site proprietors should take this site as an model, very clean and magnificent user genial style and design, as well as the content. You are an expert in this topic!
# YUDJyzJBGQXNWoCKdnZ
2018/10/07 12:40 by
Wow! This can be one particular of the most useful blogs We ave ever arrive across on this subject. Basically Excellent. I am also an expert in this topic therefore I can understand your effort.
# iQjzoVwWUIgtYLVg
2018/10/07 22:34 by
I went over this web site and I believe you have a lot of excellent info, saved to fav (:.
# WxUPWnmbzvtaA
2018/10/08 4:07 by
Just wanna say that this is very beneficial, Thanks for taking your time to write this.
# qovyHZXKmACh
2018/10/08 13:13 by
I think this is a real great post. Want more.
# oOiWIxazQQO
2018/10/09 6:41 by
Major thanks for the blog post.Really looking forward to read more. Fantastic.
# AGETFRwLZHCTEp
2018/10/09 10:41 by
It as hard to come by educated people about this subject, however, you seem like you know what you are talking about! Thanks
# tZVAXjlminWQ
2018/10/10 1:57 by
This awesome blog is definitely awesome and diverting. I have discovered helluva handy things out of this blog. I ad love to return over and over again. Thanks a lot!
# gFqWuUvrYCHVob
2018/10/10 13:10 by
times will often affect your placement in google and could damage your quality score if
# rhWNJWBNEldStIp
2018/10/10 15:57 by
Louis Vuitton For Sale ??????30????????????????5??????????????? | ????????
# EoXuyYxXHPdhjB
2018/10/11 20:57 by
or understanding more. Thanks for wonderful information I was looking for this information for my mission.
# uPWKlPFtEtkQGWd
2018/10/12 13:53 by
It is really a great and useful piece of information. I am glad that you shared this helpful info with us. Please keep us informed like this. Thanks for sharing.
# SverUYxSBKnubMagxT
2018/10/12 17:06 by
Major thankies for the blog article.Much thanks again.
# zTGxhIvuLJe
2018/10/13 17:08 by
Thankyou for this post, I am a big big fan of this internet site would like to proceed updated.
# lhbZvgiiUpph
2018/10/13 20:02 by
It as not that I want to copy your web page, but I really like the style. Could you let me know which theme are you using? Or was it especially designed?
# INrundBTkNYmv
2018/10/13 23:01 by
I reckon something truly special in this internet site.
# lxrYMXqPrOSwDDW
2018/10/14 1:52 by
Wow, great article post.Really looking forward to read more. Awesome.
# YTOFZoQCVKD
2018/12/20 2:06 by
bMWpDD I will right away clutch your rss feed as I can not find your email subscription hyperlink or e-newsletter service. Do you ave any? Kindly permit me recognize in order that I may subscribe. Thanks.
# Pandora Bracelets
2019/03/31 5:58 by
kjyqnlebav,If you want a hassle free movies downloading then you must need an app like showbox which may provide best ever user friendly interface.
# Yeezy 350
2019/04/11 14:45 by
urvectloyxYeezy,Definitely believe that which you said. Your favourite justification appeared to be on the net the simplest thing to remember of.
# Yeezy Shoes
2019/04/13 4:50 by
iafmatscqg,Very helpful and best artical information Thanks For sharing.
# Yeezys
2019/04/21 8:25 by
Miners: Users who use computational power to mine blockchain blocks.
# Yeezy
2019/04/23 5:20 by
Dalio said that he became a capitalist when he was 12 years old, when he earned his first salary by sending newspapers, mowing lawns and helping people with golf clubs, and in the stock market in the 1960s.
# Steelers Jerseys
2019/04/27 7:25 by
Don't complain that some exchanges let the BSV delist and try to cite the rules of freedom of speech or appeal. These methods do not work in the private sector unless you invest or use the decentralized exchange DEX. In addition, the purpose of cryptocurrency is to allow us to enter a society where freedom, association, ideology.
# NFL Jerseys
2019/05/05 23:37 by
I had no questions, and little interest in being in the class at all. Attendance was required by the fertility clinic I was working with?a clinic I hadn’t researched or purposefully chosen, the clinic I had ended up with because it was affiliated with the team of doctors treating my newly diagnosed brain cancer.
# Cowboys Jerseys
2019/05/07 17:53 by
But the White House’s choice of photo had many celebrating for another reason. The photo of Mrs. Trump quickly turned into a viral meme with many Photoshopping Vladimir Putin next to the first lady and others doctoring the image with other well-known faces, including Kellyanne Conway.
# Cheap Jerseys
2019/06/05 4:36 by
# Travis Scott Air Jordan 1
2019/06/10 18:03 by
tpearav Yeezy Boost,Very helpful and best artical information Thanks For sharing.
# Nike Air Max 270
2019/06/14 17:49 by
# Cheap NFL Jerseys
2019/06/20 13:59 by
# Nike Outlet
2019/07/14 9:18 by
# air jordan 11 concord
2019/08/02 19:25 by
# Yeezy 350
2019/08/03 8:19 by
# JhLDenbduCwNxaITa
2021/07/03 1:42 by
Thanks for sharing, this is a fantastic article.
# re: Verilog????
2021/07/17 19:02 by
cholorquine
https://chloroquineorigin.com/# hydroxychloroquine dangers
# re: Verilog????
2021/08/07 18:42 by
is chloroquine phosphate the same as hydroxychloroquine
https://chloroquineorigin.com/# dangers of hydroxychloroquine
# Howdy would you mind sharing which blog platform you're using? I'm going to start my own blog soon but I'm having a hard time making a decision between BlogEngine/Wordpress/B2evolution and Drupal. The reason I ask is because your layout seems different
2021/08/09 10:20 by
Howdy would you mind sharing which blog platform you're using?
I'm going to start my own blog soon but I'm having a hard time making a decision between BlogEngine/Wordpress/B2evolution and Drupal.
The reason I ask is because your layout seems different then most blogs and I'm
looking for something completely unique. P.S
Apologies for being off-topic but I had to ask!
# syuocrwinbqc
2021/11/29 0:18 by
hydroxychloroquine clinical trial
https://chloroquineef.com/
# purchase plaquenil online
2022/12/30 6:48 by
# internet apotheke
2023/09/26 12:10 by
http://onlineapotheke.tech/# п»?online apotheke
online apotheke deutschland
# online apotheke gГјnstig
2023/09/26 23:01 by
http://onlineapotheke.tech/# versandapotheke
gГ?nstige online apotheke
# online apotheke preisvergleich
2023/09/27 3:45 by
http://onlineapotheke.tech/# online apotheke deutschland
versandapotheke
# п»їonline apotheke
2023/09/27 4:13 by
http://onlineapotheke.tech/# internet apotheke
versandapotheke deutschland
# п»їonline apotheke
2023/09/27 8:48 by
http://onlineapotheke.tech/# internet apotheke
versandapotheke
# farmacia online migliore
2023/09/27 17:07 by
acheter sildenafil 100mg sans ordonnance
# farmaci senza ricetta elenco
2023/09/27 18:42 by
acheter sildenafil 100mg sans ordonnance
# safe canadian pharmacies online
2023/10/16 15:17 by
I'm always informed about potential medication interactions.
http://mexicanpharmonline.shop/# mexican border pharmacies shipping to usa
# mexican pharmacies that ship to usa
2023/10/16 17:47 by
I trust them with all my medication needs.
http://mexicanpharmonline.com/# mexico drug stores pharmacies
# certified canadian pharmacies
2023/10/16 21:21 by
I always find great deals in their monthly promotions.
https://mexicanpharmonline.com/# pharmacies in mexico that ship to usa
# mexican rx online
2023/10/17 12:20 by
A trusted partner in my healthcare journey.
https://mexicanpharmonline.com/# mexican rx online
# canadian rx store
2023/10/17 17:59 by
The widest range of international brands under one roof.
http://mexicanpharmonline.com/# reputable mexican pharmacies online
# canada pharm
2023/10/17 21:56 by
Actual trends of drug.
http://mexicanpharmonline.com/# pharmacies in mexico that ship to usa
# canadian prescription prices
2023/10/18 7:40 by
Helpful, friendly, and always patient.
http://mexicanpharmonline.shop/# mexico drug stores pharmacies
# canadian and international rx service
2023/10/18 11:10 by
They make prescription refills a breeze.
https://mexicanpharmonline.shop/# mexico drug stores pharmacies
# no perscription needed
2023/10/18 12:21 by
Consistency, quality, and care on an international level.
https://mexicanpharmonline.shop/# mexican rx online
# pharm canada
2023/10/18 15:14 by
Long-Term Effects.
http://mexicanpharmonline.shop/# mexican border pharmacies shipping to usa
# paxlovid cost without insurance
2023/12/01 4:03 by
paxlovid
https://paxlovid.club/# paxlovid covid
# farmacia online 24 horas
2023/12/07 14:29 by
https://farmacia.best/# farmacias online seguras en españa
# farmacia 24h
2023/12/07 17:29 by
https://sildenafilo.store/# sildenafilo 50 mg precio sin receta
# farmacia envÃos internacionales
2023/12/07 23:53 by
# farmacias online baratas
2023/12/08 3:04 by
https://farmacia.best/# farmacias online seguras
# farmacia online
2023/12/08 6:05 by
http://sildenafilo.store/# se puede comprar sildenafil sin receta
# farmacias baratas online envÃo gratis
2023/12/08 20:39 by
http://sildenafilo.store/# sildenafilo 100mg precio españa
# farmacia online barata
2023/12/09 12:13 by
http://vardenafilo.icu/# farmacias online seguras en españa
# farmacias online seguras en españa
2023/12/10 1:00 by
# farmacias baratas online envÃo gratis
2023/12/10 11:16 by
https://farmacia.best/# farmacia envÃos internacionales
# farmacias baratas online envÃo gratis
2023/12/10 14:14 by
# farmacia online envÃo gratis
2023/12/11 23:19 by
http://farmacia.best/# farmacia online 24 horas
# farmacias online seguras en españa
2023/12/12 18:39 by
# pharmacie ouverte
2023/12/15 12:28 by
http://pharmacieenligne.guru/# Pharmacie en ligne livraison rapide
# pharmacie ouverte 24/24
2023/12/16 10:01 by
https://pharmacieenligne.guru/# Pharmacie en ligne livraison gratuite
# paxlovid for sale
2023/12/26 19:31 by
https://clomid.site/# get generic clomid price
# how to buy generic clomid
2023/12/27 6:11 by
# best ed medications
2024/01/09 5:08 by
# where can i buy generic clomid pills
2024/01/12 8:15 by
# zestril price in india
2024/01/13 3:53 by
# acquistare farmaci senza ricetta
2024/01/15 23:04 by
# top farmacia online
2024/01/17 8:32 by
http://farmaciaitalia.store/# farmaci senza ricetta elenco
# can i buy generic clomid without rx
2024/01/20 16:53 by
They consistently exceed global healthcare expectations
http://cytotec.directory/# Cytotec 200mcg price
# can i get clomid pills
2024/01/21 8:32 by
Their flu shots are quick and hassle-free
https://clomidpharm.shop/# where buy clomid price
# where to buy generic clomid without insurance
2024/01/21 13:22 by
Pharmacists who are passionate about what they do
http://cytotec.directory/# buy cytotec online
# can i get cheap clomid now
2024/01/21 18:49 by
They're reshaping international pharmaceutical care
http://prednisonepharm.store/# buy prednisone 10 mg
# can i buy generic clomid without insurance
2024/01/22 0:16 by
Always a seamless experience, whether ordering domestically or internationally
https://prednisonepharm.store/# prednisone 40 mg
# where can i buy clomid for sale
2024/01/22 6:04 by
Best and news about drug
http://cytotec.directory/# cytotec online
# buying clomid without rx
2024/01/22 7:09 by
# stromectol usa
2024/01/30 20:59 by
http://clomiphene.icu/# how to buy cheap clomid price
# ivermectin syrup
2024/01/31 20:49 by
# canadian pharmacies without prescriptions
2024/02/10 11:01 by
# local dating sites
2024/03/03 8:18 by
# dating game
2024/03/04 22:57 by
# my dating sites
2024/03/06 9:16 by
# pof dating site
2024/03/07 9:33 by
dating free site:
http://miamalkova.life/# mia malkova hd
# personals free
2024/03/08 23:13 by
free singles dating search:
http://miamalkova.life/# mia malkova only fans
# dating free sites
2024/03/09 18:39 by
datijg websites:
https://miamalkova.life/# mia malkova full video
# gates of olympus oyna ucretsiz
2024/03/29 11:59 by
# doxycycline hyc
2024/04/12 14:50 by