Re: how to make simulation softwares - C# Discussion Boards

Luc Pattyn15-Sep-09 6:48

15-Sep-09 6:48

For microprocessor software development you need cross-development tools, they usually include a cross-compiler, optionally a cross-assembler, and a linker. There are free tools for a lot of them, typically from the chip manufacturer.

FYI: if you want to simulate all functionality of 8086, it will be very hard to do so. With all the protection modes, the memory management unit, etc. The only "advantage" it has is you could use standard tools to develop the EXE files, but then your simulator needs to load an EXE file according to the PEF format, which is a challenge as well.

Smile | :)

Luc Pattyn

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Djtech0119-Sep-09 4:49

Djtech01

19-Sep-09 4:49

hey
how you doin?

I was just reading alot about cross-compilers.

For .NET Framework we have a tool called .NET CLR(Common language Runtime) using this we can create our own compiler,of course many other things are added.

up to this point I understand that I'm goin to create my own compiler for my custom assembly language, meaning the language that my user will type on my simulator interface, and integrate these with other functions of the simulator. (check me if this idea is right)

if the above idea is correct, I'm going to continue to the next step in the case study. I've planned to finish all the case study and project requirments,objective and scope before the actual work begins.

N.B
I have changed my username to Djtech01 (don't be confused)

Luc Pattyn19-Sep-09 6:27

19-Sep-09 6:27

Djtech01 wrote:
I'm goin to create my own compiler

Not sure that is wise. Here is why.

You could define your own microprocessor, and create a "cross"-compiler, a linker, a simulator, a profiler, whatever tool you want, and focus them all on one and the same fictitious architecture. That would be fine; it probably would serve some academic purpose only.

Or you are aiming at a real-world microprocessor, and want to create software that works with it. In that case I recommend you take existing implementations, and then replace them one at a time with your own. Assume you create a compiler and a simulator, and you misunderstand some detail of the CPU, now both your compiler and your simulator would be wrong, but one would compensate for the other. So maybe it all would look fine, until you port yout code to the real CPU and it suddenly fails to work.

So my suggestion remains: choose a modern and popular CPU that comes with free PC-based development tools; at best also buy a little demo board so you can create, download and run some real code on the real chip. Then start your own software effort, probably a simulator first, then maybe a cross-assembler, and finally, if still necessary, your own cross-compiler.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

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Djtech0120-Sep-09 6:02

Djtech01

20-Sep-09 6:02

thank you
I'm aiming at real-world microprocessor and want to create software that work with it
So I wannt to work on my pc's cpu as a target machine (to simplify things)
I'm I right?

Luc Pattyn20-Sep-09 6:32

20-Sep-09 6:32

Djtech01 wrote:
I'm I right?

No.

x86 isn't a simple processor; it has several operating modes, most of which you will not be able to reach when running under Windows.

You MUST make a fundamental choice:
1. target a fictitious CPU
2. target a small subset of a real CPU; that could be x86 in user mode only.
3. target a (simple but) real CPU in all its aspects

As I said I would go for 3, and start with an all-official solution: prototype board, available compiler, etc. And then create a simulator.

I will no longer repeat my point of view, this thread is now closed to me. Good luck.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

PIEBALDconsult13-Sep-09 13:44

PIEBALDconsult

13-Sep-09 13:44

1. Yes
2. this[^]

Djtech0115-Sep-09 4:25

Djtech01

15-Sep-09 4:25

thank you very much.
can you help about which C# applications,namespaces and styles would be helpful?

Re: xml serialisation [modified]

PIEBALDconsult15-Sep-09 6:53

PIEBALDconsult

15-Sep-09 6:53

My only experience with such things was waaay back in college. We had an assignment to emulate a very primitive computer. The assignment wasn't based on a real computer; the text book describes a computer with only twenty operations. Programs are entered as ten-digit decimal numbers, as if from punch cards.

I'm fairly sure I was the only student in the class who had a working program (written in VAX Pascal as I recall). I also have a version in C that I wrote in 2003. I may yet write it in C# because it's kinda fun.

What you need to do will probably be much more complex (although you could simplify it if you choose).
What exactly do you want to achieve? Do you really want to simulate the CPU or simply execute the assembly code?

I suggest that the simpler the processor, the easier it is to simulate (4004 or 8008?). Your choice may depend on what your instructor thinks is a worthy level of expertise to demonstrate for the degree you're seeking.

As I recall, the instruction sets for 4004, 8008, 8080, 8088, etc. build upon the previous generation, so I would begin by implementing the 4004 instructions and then progress from there.

I can't tell you how to accomplish your task; that will depend on your own creativity.

xml serialisation

jdneul13-Sep-09 10:48

jdneul

13-Sep-09 10:48

hi i am serialising the uint data of a textures used in my maps, the trouble is this creates a huge file, i have already tried serialising it as a bitmap(as i have my own conversion method setup) but it seems to have a huge problem serialising and deserialing bitmaps, is there a better way of storing my map textures other than referencing the file name and src area of each image i am using??

Re: xml serialisation

Christian Graus13-Sep-09 13:17

Christian Graus

13-Sep-09 13:17

It sounds to me like XML is a terrible candidate for what you want to do. I'd use a lossless image format to create them in a compressed format.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

jdneul13-Sep-09 20:58

jdneul

13-Sep-09 20:58

the thing is it does not just store information on the images, imagine a map class which can hold several tiles, each tile has its own position and size and image, now i need all this information storing one way or another originally i had it storing via binary serialisation but as you know binary serialisation is slow, so i thought about using xml as the users of my program would also be able to edit them and change the values easily
Anyway it does not matter i think referencing the file and the image area(via preset indexes) will do just fine, as i have seen another example which uses this method.

modified on Monday, September 14, 2009 3:11 AM

How To get/download videos from device like camera?

n0name2013-Sep-09 10:04

n0name20

13-Sep-09 10:04

Hy,

I'm developing small app in C# 3.5 for winXP that will automatically download images and video from camera to pc, on camera plug-in via usb. I have canon ixus 50 camera and i figure out how to get images from that camera to pc via WIA, but I just can't figure it out how to get/download avi format videos, can someone help me pls.

Regards

Re: How To get/download videos from device like camera?

Richard MacCutchan13-Sep-09 23:49

Richard MacCutchan

13-Sep-09 23:49

how difficult is this?[^]

spd

moein.serpico13-Sep-09 9:50

moein.serpico

13-Sep-09 9:50

did you know some information about spd's ram
and C# implemention?

Henry Minute13-Sep-09 9:54

13-Sep-09 9:54

moein.serpico wrote:
did you know some information about spd's ram
and C# implemention?

No!

I don't even know what spd is. I certainly did not know that it had a C# implementation.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Luc Pattyn13-Sep-09 11:52

13-Sep-09 11:52

AFAIK SPD is part of BIOS, so use WMI.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

Henry Minute13-Sep-09 12:31

13-Sep-09 12:31

Well, if you can learn something new every day, your day isn't wasted!

Oh, and your brain fills up! Smile | :)

Luc Pattyn13-Sep-09 12:52

13-Sep-09 12:52

Henry Minute wrote:
and your brain fills up!

Store everything using acronyms, that's how I manage...

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

Henry Minute13-Sep-09 13:25

13-Sep-09 13:25

Err..., I have trouble remembering acronyms. Big Grin | :-D

is0 8583

moein.serpico13-Sep-09 9:48

moein.serpico

13-Sep-09 9:48

give me some information about iso 8583
i tried but i didnt find so much thing

Re: is0 8583

Henry Minute13-Sep-09 9:57

Modify file attributes... Access denied.

13-Sep-09 9:57

moein.serpico wrote:
give me some information about iso 8583

That's a bit rude isn't it!

Never mind though, here is some information about ISO8583.

ISO 8583 Standard for Financial Transaction Card Originated Messages - Interchange message specifications is the International Organization for Standardization standard for systems that exchange electronic transactions made by cardholders using payment cards.

Re: is0 8583

Christian Graus13-Sep-09 13:21

Christian Graus

13-Sep-09 13:21

moein.serpico wrote:
give me some information about iso 8583

It's cunningly hidden between the info on ISO 8582, and ISO 8584.

And people too stupid to google, probably wouldn't be able to make much sense of it.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

JollyMansArt13-Sep-09 8:46

JollyMansArt

13-Sep-09 8:46

I am trying to modify the file's attibutes to apply hidden feature. This method appears to be inadequite as it does not change my file attributes. Instead as I run my code and watch what is doing it give me a access denied #5 and invalid parameter #87. What am I doing wrong?

Bitmap bitmap = new Bitmap(1, 1);
                    //string fullPath = string.Format("{0}\\bitmap.bmp", Environment.GetFolderPath(Environment.SpecialFolder.MyPictures));
                    //string fullPath = string.Format("{0}", BMP_Path);
                    bitmap.Save(BMP_Path);
                    if ((File.GetAttributes(BMP_Path) & FileAttributes.Hidden) != FileAttributes.Hidden)
                    {
                        //Adds to the existing file attributes
                        File.SetAttributes(BMP_Path, File.GetAttributes(BMP_Path) | FileAttributes.Hidden);
                        //Replaces the file attributes
                        File.SetAttributes(BMP_Path, File.GetAttributes(BMP_Path) & FileAttributes.Hidden);

                    }

Re: Modify file attributes... Access denied.

Henry Minute13-Sep-09 9:34