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@LockheedTutorials 4 күн бұрын
in win32 and win64 generated binaries from nasm (at least), section .data is only 4 byte aligned, not 16, unless otherwise specified on the same line .data is declared.
@billskycomputerguy 4 күн бұрын
That is correct. nasm.us/doc/nasmdoc5.html MASM says it aligns on a 16-byte address, but it also says that it doesn't really matter any longer with modern CPU's using flat memory models. Typical of Microsoft to contradictory. (I haven't tested this)
@Rex9594 6 күн бұрын
Thanks a ton for this video, this had me scratching my head for a full day trying to get it to work
@billskycomputerguy 4 күн бұрын
Awesome!
@damianjblack 9 күн бұрын
So I actually have two middle names. (This is more common in Europe and some other places outside the US, you rarely see it in the US or Canada). So I defined MiddleInitial as PIC A(2). But yes for most usage cases it can just be A. Similarly for ZipCode, outside the US you see all sorts of funky postal codes with letters and spaces and who-knows-what in them (UK is a good example, you have two letters, a one or two digit number, then a space, then a one digit number and two more letters). So I made that an X(10). I also noticed that I am super used to Pascal and C: I ended several of my statements with semicolons 😂😂
@montpierce424 11 күн бұрын
Love all your great videos. Maybe you can help me... I have a question (kind of a pet peeve?) about "++" and "--" operators. At 3:10 you add the update part of the for-loop "i++". Ok, here's my question: 99.999% of the time I see example code (especially on KZbin), everyone puts the "++" or "--" AFTER the variable name. Now in any stand-alone statement (i.e. no equal sign, no other variable) it makes no difference if the "++" is before or after the variable. Ex: ++x; is exactly the same as x++; I was a contract c programmer for 30+ years. Most variables with descriptive names can be 4-20 (or more) chars long. For readability, I've always put the "++" or "--" in front of the var name instead of the end. Isn't ++varOneTwoThree; more readable than varOneTwoThree++; ?? In fact, the ONLY time I'll put the "++"/"--" after the variable name is when I need to reference the current value before incrementing. Like: var2 = var1++; Anyways, it just seems weird to me that almost everyone else always puts the "++"/"--" after the variable name instead of before... Again, I know it makes no difference except if the var name on the longer side. But on longer variable names... anyways... Thanks again for all your great videos. Hey, you ever use PL/I ?? I've just started learning it.. Interestingly, it's designed based on the best parts of Fortran and COBOL. Very Interesting.
@SBcode-s3n 20 күн бұрын
Geany ❤❤❤❤❤
@billskycomputerguy 19 күн бұрын
@@SBcode-s3n great editor, isn’t it
@SBcode-s3n 19 күн бұрын
@billskycomputerguy yes
@uonliaquat7957 21 күн бұрын
Thanks for such an informative vide,o, I learned something new about memory allignment today, from where did you learn all this? did you follow any particular course in your college days?
@billskycomputerguy 21 күн бұрын
Glad you enjoyed it. I have been working in Computer Science since 1979. I have worked as a contractor for NASA, Martin Marietta, IBM in both hardware and software and research and development. I have done both software and hardware design as well as operating system development on mainframes as well as workstations (OS/2, Linux).
@uonliaquat7957 21 күн бұрын
@@billskycomputerguy Wow Interesting, sounds like you've already worked on my dream projects. Well I've also studied computer science and gradueted in 2020, I'm trying to do much more system programming, tried following henry and peterson, is there a course or a book that's a must read? Any recommendations from your side would really help me what to focus on and and what to study when learning low level programming . Thanks
@billskycomputerguy 21 күн бұрын
@@uonliaquat7957 That is a HUGE request for information. There are just too many things out there to summarize them all. Mainframe developers are in HUGE demand right now. A previous student of mine who hated this idea, just got an intro job for IBM working for California Medical starting at $70K and is VERY happy now that he knows what it was all about. He's very happy. So much out there, many areas are already filled with too many developers.
@uonliaquat7957 20 күн бұрын
@@billskycomputerguy Computer science is my passion. Apart from my job, I would love to delve much deeper into this field.
@billskycomputerguy 19 күн бұрын
@ it’s all up to you! If you have any questions, ask.
@rudebloke1 25 күн бұрын
Mr Sky. I can't thank you enough for your videos. I definitely intend to get to them as soon as I am able to. Please keep it up. This is content that is hard to find.
@techhoppy 27 күн бұрын
Thanks for doing this series! Question: what keyboard are you using?
@billskycomputerguy 26 күн бұрын
@@techhoppy daskeyboard. Love it! www.daskeyboard.com/
@AbdullahAhmed-xz8sm 27 күн бұрын
Thanks for making the video!
@billskycomputerguy 27 күн бұрын
You're welcome!
@PurpleWarlock 27 күн бұрын
Neat!
@billskycomputerguy 27 күн бұрын
Next one is coming up shortly! I've got a Kidney Stone, but you all are more important than thaaaaaaa. OUCH!
@emirlie 27 күн бұрын
Thanks for the great video.. Here's something I would like to ask; what was the size of the executable you built? can that exe be considered a "standalone" application for a regular win10 platform, or you would need to carry other files to make sure it works..
@billskycomputerguy 27 күн бұрын
Glad you like it. The size can be found by just right clicking on the file and selecting properties (or something similar). As for can it run on its own, the answer is probably yes. The reason I say probably is because it depends on your operating system. I believe these are all statically linked, and that would mean that all necessary libraries are attached to the executable. One way to test this is to copy the executable file to another computer and try from there. If you want to find the size of JUST the program itself without anything attached to it before the link occurs, look at the .o file on Linux or a similar file on Windows (might be .obj), NOT the executable. The object file tells you exactly how big your program is without all of the other stuff that the linker adds.
@F_A-j2q 28 күн бұрын
can't seem to find the eclipse ide for scientific computing on their webpage and the updated ide they suggest doesn't have fortran as an option when creating new projects
@billskycomputerguy 28 күн бұрын
I know, it's a pain. The FORTRAN IDE add on for Eclipse is only for older versions of Eclipse. I have tried using Visual Studio Code, but it doesn't work very well and hard to setup. So I use Geany editor with make files using my FORTRAN template files. You can download it here: www.dropbox.com/scl/fi/73lhp7q5ipm65p0anya9u/LinuxFortran64bitTemplate.zip?rlkey=0qkgh7ix4f6vyd9l4av7mq89o&dl=0 The Intel FORTRAN make file can be found here: www.dropbox.com/scl/fi/ckwcskais0zky0vyu6593/LinuxIntelFortran64bitTemplate.zip?rlkey=vglbfr0d4mzowh5q0pkdpuaif&dl=0 Hope that helps.
@justwanderin847 Ай бұрын
Next, how to compile and run sql and using cursors
@billskycomputerguy Ай бұрын
There already should be a video on how to compile these programs, but yes, next is coding sql and cursors. Diagnosed with a kidney stone yesterday, so I'm a bit involved.... Will get to it as soon as I can.
@justwanderin847 27 күн бұрын
@@billskycomputerguy Hope you are feeling better. I did not see any info on gnucobol and DB2 precompiler or SQA / sql. I could not find this...
@Naburgondux Ай бұрын
Incredible video man!,you are really good explaining,its a shame no one cares for assembly nowadays,but i watched your video because i challenged myself into making a TUI game in assembly : )
@billskycomputerguy Ай бұрын
@@Naburgondux funny you said that. I heard the same about mainframes. A student of mine who just graduated got a job at IBM on mainframes when they had problems finding non-mainframe jobs and now making a BUNCH of money, and they paid their training! Assembly is not gone, not by a long shot. Without assembly, there wouldn’t be compilers, device drivers, operating systems. Assembly reflects the instructions in the CPU/GPU/FOU. Don’t believe what the inexperienced tell you. Glad you liked the video.
@Naburgondux Ай бұрын
@billskycomputerguy the thing is,most new programmers now,don't even know what assembly is,they always go for the "main language" like Python or JavaScript,that's why assembly is scarce, the company's that need assembly are giving black gold for those who know.
@billskycomputerguy Ай бұрын
@ 100% correct!
@dennissdigitaldump8619 Ай бұрын
As a recently graduated elder student seeking state work, this series is a literal life saver. I cannot thank you enough!
@billskycomputerguy Ай бұрын
@@dennissdigitaldump8619 You are soooooooo welcome! I only did a few videos on this topic, but enough to get you started. BTW, two of my students who couldn’t find jobs after college just got mainframe jobs starting at $70K. Very excited.
@RenatoMejilla Ай бұрын
Hello, can you make a video on how you configure Geany to run and compile COBOL?
@billskycomputerguy Ай бұрын
@@RenatoMejilla doesn’t this video show you how to do that? kzbin.info/www/bejne/jpO1f3eZfKulha8si=DIXeB_DWX6uHW611 and maybe the one after that (link in the description of the first)?
@NutthawatPanyangnoi-v9x Ай бұрын
This is Awesome!
@billskycomputerguy Ай бұрын
@@NutthawatPanyangnoi-v9x glad you think so.
@justwanderin847 Ай бұрын
I like the way you indent for the nested if. In COBOL if it got too deep we can use CASE, is there a Fortran equivalent?
@billskycomputerguy Ай бұрын
In my opinion, if you have a nested if statement that is that large where it runs off the line, then your if statement is too big and needs to be split up. But, if you don't want to do that, then yes, there is a Switch-like statement SELECT CASE (selector) CASE (label-list-1) statements-1 CASE (label-list-2) statements-2 CASE (label-list-3) statements-3 ............. CASE (label-list-n) statements-n CASE DEFAULT statements-DEFAULT END SELECT The Intel programmers guide has a great write up on this feature. I'll be doing a video on it as well. www.intel.com/content/www/us/en/docs/fortran-compiler/developer-guide-reference/2025-0/select-case-and-end-select.html
@justwanderin847 Ай бұрын
Get you a System76 MeerKat and all is well.
@billskycomputerguy Ай бұрын
I LOVE those computers. I won't be buying Mac's any longer because of their ARM chips (at least for development), and System76 is next!
@justwanderin847 Ай бұрын
@@billskycomputerguy I have a MeerKat with Ubuntu and a DarterPro with Pop!_OS . (I like pop best)
@Edgarxx 2 ай бұрын
good video, that realy works! Thanks!! I was lost between a lot os packages to install, to make cmake run.
@billskycomputerguy Ай бұрын
Yeah, lots of confusion about how to make this stuff work.... Glad it helped.
2 ай бұрын
Took Fortran 1988 ... lol
@billskycomputerguy 2 ай бұрын
I took it in 1976!
@kusnn3111 2 ай бұрын
Hello! I was trying to install Assembly from your tutorials, and I encountered issues while trying to compile both x64 and x86 versions. For x64 I got "A2006 undefined symbol: rex", and "MSB3721 during ml64.exe task". I am a new student of computer engineering from Poland and I want to learn building kernels and actually build a small kernel, so I decided to learn Assembly. I wasn't sure if you'd respond under your Assembly videos so I comment here.
@CyberNeko1 2 ай бұрын
Thank you so much for taking/sacrificing your valuable time for educating us 💙
@billskycomputerguy 2 ай бұрын
@@CyberNeko1 I just wish I could do even more, but retirement keeps me busy in places like Tahiti!
@Sand7Clipper 2 ай бұрын
Great video! Love the fact that 50% of the vid is just you struggling with VS and windows jank 😂
@billskycomputerguy 2 ай бұрын
@@Sand7Clipper That’s Windows for ya! 😁. Glad you like it.
@alexzalewski4894 2 ай бұрын
fyi , YMM registers are their own type of register (windows has them aswell), rather than your standard 128 bit xmm the YMM has 256 bit, and furthermore ZMM (which only new gen cpus support) are 512 bit
@billskycomputerguy 2 ай бұрын
@@alexzalewski4894 correct with one change. It’s not that Windows or Linux has those registers, it’s that the CPU has them and Windows, Mac or Linux OS’s can use them. As said, these are special use registers, mainly for graphics rendering calculations and the like where a single instruction can move multiple pieces of data. Awesome!
@vnmsenior 2 ай бұрын
I have just installed GNUCobol3.2 on my MX Linux install. Lots of learning with their website's documentation! But looks like fun! Thanks for sharing this video!
@rudebloke1 2 ай бұрын
ha ha - I came to your channel for COBOL and ended up watching this video first. YOu just got a new subscriber sir!
@billskycomputerguy 2 ай бұрын
I'm so glad it helped. Gonna do some more COBOL videos this weekend. Procedures and Functions. Should be fun. Enjoy!
@AkiiKun-x8v 2 ай бұрын
Hello. Greetings. I've installed the virtual machine via Oracle VM. When i use the terminal, a spike in physical memory happens and the memory is full. Is it a memory leak?
@billskycomputerguy 2 ай бұрын
Ok, let me get the facts here. You're using Virtualbox and Oracle Linux as the guest operating system? Or are you using Virtualbox with Mint Linux as the guest operating system? Also, what is your computer's main operating system? Windows?
@AkiiKun-x8v 2 ай бұрын
@@billskycomputerguy Hello. I am using Virtualbox with Mint Linux as the guest operating system, or as just the way you demonstrated setting up mint linux with oracle VM Virtualbox. My computer's operating system is indeed Windows (10).
@billskycomputerguy 2 ай бұрын
@@AkiiKun-x8v Okay, thanks for the info. Here's what I did. - Started up my Windows 10 computer. 32gig of memory. I installed all updates - Test results: Host OS Windows 10 (most recent version) Virtualbox v7.1.4.r165100 Guest OS Mint Linux Mate 22 64-bit - Windows: With Virtualbox loaded, but no Guest running Available: 26.226 gig Cached: 9.420 gig Total: 32.715 gig - Windows: With Mint Linux guest booted within Virtualbox and logged in Available: 23.144 gig Cached: 13.139 gig Total: 32.715 gig - Windows: With Mint Linux guest terminal opened Available: 23.091 gig Cached: 13.868 gig Total: 32.715 gig - Linux: From a terminal Total memory: 4.010 gig Free Memory: 1.807 gig - Linux: Second terminal opened Total memory: 4.010 gig Free Memory: 1.806 gig - Windows: With Mint Linux guest second terminal opened Available: 23.052 gig Cached: 15.354 gig Total: 32.715 gig If you really are running out of memory, might have been a couple of things: - You may have setup too much memory on your Linux guest. Make sure it is no higher than 4gig of memory - Your Windows 10 computer doesn't have as much memory as I do. If you have 4gig of memory, change your virtual machine (Linux) to only have 1 gig of memory. If your computer has 8 gig of memory, change your virtual machine to only have 2 gig of memory. You don't need that much Linux memory Let me know what you find
@billskycomputerguy 2 ай бұрын
@@AkiiKun-x8v Oh, I used Windows Resource Monitor (GUI app) on the Windows host, and the command below in a Linux guest using terminal watch -n .5 cat /proc/meminfo
@AkiiKun-x8v 2 ай бұрын
@@billskycomputerguy Hello. I restarted the whole process from downloading the .iso file. I found out that the memory spikes up when the guest OS hasn't even started yet.
@UserNY3 2 ай бұрын
New voters appreciate this video - if they don't - hmmmm. Thank you!
@billskycomputerguy 2 ай бұрын
So nice to hear
@UserMT8 2 ай бұрын
This makes so much sense. I feel like you did when you were looking this stuff up - frustrated, but amazed when you finally got it. Thank you so much.
@billskycomputerguy 2 ай бұрын
Glad it makes sense!
@UserPO2HK 2 ай бұрын
Love it! Thanks for this great video
@billskycomputerguy 2 ай бұрын
You are so welcome
@alexchrist1057 2 ай бұрын
Thanks for a video
@billskycomputerguy 2 ай бұрын
You Are Welcome
@user-xw9tn8zx1g 2 ай бұрын
first election cycle where i’m able to vote so glad you made this video. thanks!
@billskycomputerguy 2 ай бұрын
Congratulations! Enjoy living in a democracy. Your vote counts - everyone does - no matter where you live.
@johnnyzielony1437 2 ай бұрын
best video on the topic out there
@billskycomputerguy 2 ай бұрын
@@johnnyzielony1437 How nice for you to say.
@narendaramenaria4983 3 ай бұрын
Hi I tried what you did in video but when I type gfortran --version it says command not found
@billskycomputerguy 2 ай бұрын
If you're on Linux, the command IS gfortran or the Intel compiler ifx. It should work automatically. If on Windows, make sure you issued the following installation statements from an Msys2 window: (minus the minus symbol) - pacman -Syu - pacman -Su mingw-w64-x86_64-gcc-fortran Also, if you have installed msys2 on Windows, did you remember to change the path as I show in the video? 1) In Windows Explorer, right click on This PC, then Properties 2) Click Advanced System Settings, click Environment Variables 3) Double click Path (either one) 4) Click New and type: c:\msys64\mingw64\bin (note: this assumes that you installed msys2 in the default location) 5) Click OK, OK, OK. Once that is done, if you open a command prompt and type gfortran, it should work. If you open a Msys2 Mingw64 window (BASH), the gfortran command should also work.
@narendaramenaria4983 2 ай бұрын
@@billskycomputerguy thanks it worked
@billskycomputerguy 2 ай бұрын
@@narendaramenaria4983 you’re welcome!
@Snyder0317 3 ай бұрын
Thanks! I'd love an overview of the report writing facility, whenever you have time.
@billskycomputerguy 3 ай бұрын
@@Snyder0317 gonna do that soon. Gonna do some videos on COBOL procedures and functions first. As soon as the temperature in California goes down low enough so I don’t blow electrical fuses!
@davesabra4320 3 ай бұрын
thanks! Prof Sky.
@billskycomputerguy 3 ай бұрын
You are welcome!
@andrewjenery1783 3 ай бұрын
What about OS support?
@billskycomputerguy 3 ай бұрын
What do you mean?
@andrewjenery1783 3 ай бұрын
@@billskycomputerguy Operating systems. What operating systems can you use with this.
@billskycomputerguy 3 ай бұрын
Ah..... Any operating system that Visual Studio Code installs on. Windows, Mac, Linux
@robertryan8029 3 ай бұрын
My installation of Geany is on POP_OS (version based on Debian). The terminal prompt is [org.geany.Geany~]$. How do I change it to reflect my local path? I can't figure out how to configure it to compile gnulinux, and contrary to what you stated in another comment response, I cannot find any video in which you showed how to configure the gnucobol compiler in Geany. Other than that, I am really enjoying your videos and have "relearned" a lot! You are an amazing teacher. I haven't touched COBOL ind decades, but your instructions are bringing it back quickly.
@aliahmadvandi 3 ай бұрын
tanks for this video , here is your reward for such nice job :::: --> mingw-w64-x86_64-geany AND mingw-w64-x86_64-geany-plugins
@billskycomputerguy 3 ай бұрын
Love Geany!
@Muybonito523 3 ай бұрын
When I do this I get this "(process 2496) exited with code -1073741819 (0xc0000005)" instead of exit code 0. This happens in another basic program I am trying to use just to get setup doing assembly in windows. I haven't been able to figure it out :(
@billskycomputerguy 3 ай бұрын
Strange. Make sure you are running it as a 64-bit application (not x86) or vice versa. Not sure what else it could be. Do you get that during execution or assembly/link?
@Muybonito523 3 ай бұрын
@@billskycomputerguy If I skip the debugging part and just run it gives me that exit code which I have since found it is a crash. If I debug there is a unhandled exception. On a forum it had to do with aligning the stack , so they had me add a 'sub rsp, 28h' just after 'main PROC' and that seemed to fix it. I am not 100% understanding the fix, but has to do with the requirements of the Windows ABI.
@billskycomputerguy 3 ай бұрын
@@Muybonito523 I tried to reproduce this, and it indeed is a problem. Something has changed within the kernelbase.dll file that requires an assembly application to free up stack memory before exiting the application. So, sub rsp, 28h means that 5 quad-word bytes (40 bytes) need to be released back to the OS before existing. You could also do pop rax five times - same thing but a lot less efficient. I'll need to change all of my 64-bit templates to support this change. Thanks for finding this!
@billskycomputerguy 3 ай бұрын
@@Muybonito523 My project templates have now been updated. Thanks again for the heads up here! www.dropbox.com/scl/fo/bv9f8bp1zmccchya7pthg/h?rlkey=wg1ky9dh0cnmh8lsc5hfmk4re&e=1&st=x487gmy5&dl=0
@Muybonito523 3 ай бұрын
@@billskycomputerguy No problem I give credit to the MASM forum guys, they are the ones who helped me with it, I didn't know what I was doing!
@yuliayakymiv7422 4 ай бұрын
If, after all these steps, kdbg returns an error: "kdbg: no debugging symbols found," let me save you a day of your life. You just need to go to your VM settings, navigate to Display → Screen, check the box for Enable 3D Acceleration, and set the Video Memory to 128 MB. P.S. Thanks to the author for the assembly series, it’s gold 💜
@billskycomputerguy 3 ай бұрын
Make sure you assemble it with the -g flag for debug symbols.
@billskycomputerguy 2 ай бұрын
@@yuliayakymiv7422 so many options with all of these operating systems. Thanks for the solution
@corona528 4 ай бұрын
Thank you for this!!
@billskycomputerguy 3 ай бұрын
You're so welcome!
@cbbcbb6803 4 ай бұрын
Why don't Microsoft market its own version of Linux? IBM markets RedHat. Apple markets a version of BSD Unix.
@billskycomputerguy 3 ай бұрын
I have no idea...
@cheerpoasting 4 ай бұрын
one of the only channels making good tutorials!
@billskycomputerguy 3 ай бұрын
Awwww, how nice.
@fvalli2003 4 ай бұрын
Hi, thanks a lot! I have a question about how can you change the video mode to a graphic mode so you can draw in the screen in 64bit assembly . Goodbye!
@billskycomputerguy 3 ай бұрын
Not sure what you mean by "draw in the screen"
@cordyjourvelitoua-tsele5415 4 ай бұрын
Very good, thanks
@billskycomputerguy 3 ай бұрын
You're Welcome!
@ssmith5048 4 ай бұрын
Another solution for the ' infinite" output for sinh(90) is to change your real declatarion to REAL(8) on line 13 of your code. Using gnufortran this returns an exponential value for me.
@billskycomputerguy 3 ай бұрын
Exactly!
@rontarrant 4 ай бұрын
I've been really enjoying your videos, Bill. Now, I've got a couple of questions... 1) Scuttlebutt has it that Rust can do OOP and therefore can deal with building a GUI as well (or, via alternative means, just build a GUI the old-fashioned way like we did on the Amiga). Do you have any plans for covering how to approach GUI libraries and building a UI, and/or general OOP coding in Rust? 2) Just curious, too, why you chose to release these videos in 720p max. resolution. It might save you a bit of zooming in post. (I don't know how much trouble it is to zoom in an editing suite, but it's gotta be a tad time-consuming, right?) I can only assume that's it's got something to do with cost of bandwidth for uploading or some sort of local storage issue? BTW, your "go ahead and" count is way down over most who do instructional videos! 😁
@billskycomputerguy 4 ай бұрын
@@rontarrant eh, 720 means smaller videos uploaded. Doesn’t make it easier or more difficult to produce. I record at a much higher resolution, and Handbrake it down to 720 for video size. They look fine if you tell KZbin to show them at a higher resolution. I do plan on doing RUST OOP or what is available. GUI, I don’t know.