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Index > DOS > file I/O

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ke11ey



Joined: 13 Aug 2005
Posts: 1
Location: here
ke11ey
Hi, iv read a tutorial (some place) and now im just looking for file i/o stuff, Did search google but nothing Sad i just need some example codes and a explanation how to write to files, how to create a simple text file? o and user input Rolling Eyes i just had basic in the tutorial like how to use the registers, making a message box, ect Crying or Very sad

thank you Embarassed
Post 13 Aug 2005, 12:42
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
Here is a example of file i/o http://members.tripod.com/~ladsoft/
Go to the "MSDOS demos" and then "File i/o", its not for fasm but should be easy to convert.
also this http://www.cesis.lv/learn/asm/asm3.html
Post 13 Aug 2005, 15:23
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ly



Joined: 11 Oct 2005
Posts: 13
ly
hello
Is there file I/O interupt using BIOS (instead of DOS int 21h) ?
If yes please show some demos for create,read,write,open,close and delete files.
thanks ly
Post 19 Oct 2005, 20:10
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
Post 19 Oct 2005, 20:15
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ly



Joined: 11 Oct 2005
Posts: 13
ly
thanks vid
BUT they are for DOS (int 21h) ,i'm looking for BIOS intrpts.
ly
Post 19 Oct 2005, 20:39
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decard



Joined: 11 Sep 2003
Posts: 1092
Location: Poland
decard
AFAIR with BIOS only you can't work on files. You have a direct access to disk structure (sectors) with int 13h. You can find detailed description here. But if you want to access files, you'll have to write your own routines.
Post 19 Oct 2005, 21:00
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vid
Verbosity in development


Joined: 05 Sep 2003
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vid
bios just doesn't support any fiesystems.
Post 19 Oct 2005, 21:39
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Remy Vincent



Joined: 16 Sep 2005
Posts: 155
Location: France
Remy Vincent
ke11ey wrote:
Hi, iv read a tutorial (some place) and now im just looking for file i/o stuff, Did search google but nothing Sad i just need some example codes and a explanation how to write to files, how to create a simple text file? o and user input Rolling Eyes i just had basic in the tutorial like how to use the registers, making a message box, ect Crying or Very sad

thank you Embarassed


For me it's IMPOSSIBLE to program so hard programs directly in assembler, have you access to another language so you could translate your own C (not C++) programs to assembler, or your own Delphi programs (using "native" CreateWindow) to assembler or your own Ada programs to assembler ?

Please be carefull because clever thinking process can't enter to a brain directly in assembler, you need to practice a little bit in your own usual language (and i don't want to know which one!!) and then to make final program in assembler.

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Post 20 Oct 2005, 12:01
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
so hard? if you mean file I/O than it is just as hard as in C (but you have cca 4 lines instead of 1)

Quote:
clever thinking process can't enter to a brain directly in assembler
usual problems with HLLers who are trying to do something in assembly. You think "structured", while in assemblerists think more "linear". With such approach is useless to code assembly, in fact you first code it (in your head) in structured language and then hand-compile it to assembly. But compiler can make this job better. If you want to be effectiver you need to create program IN assembly, not convert it to assembly.
Post 20 Oct 2005, 17:18
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Remy Vincent



Joined: 16 Sep 2005
Posts: 155
Location: France
Remy Vincent
vid wrote:
so hard? if you mean file I/O than it is just as hard as in C (but you have cca 4 lines instead of 1)

You think "structured", while in assemblerists think more "linear". With such approach...


I swear that "unstructured thinking" and talking i do, is all about music and sometomes movies etc. I swear it's true!!! that's why I talk directly about programming without saying things like "..."or "..."... I don't know where it comes from but that's how I am... But I remember that when I try a little bit of C and Ada 6 monthes ago, I remember that I was more about to do compting talks with more "..." and more "..."... may be Ada or C are pushing far away Question Question Question all music I have inside my head (disco, old rocks, pop...

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Post 20 Oct 2005, 20:33
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Remy Vincent



Joined: 16 Sep 2005
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Remy Vincent
ave u similar "....." "..." nervous breakdown ??
Post 20 Oct 2005, 20:35
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
you 've just over-argumented me Very Happy
Post 21 Oct 2005, 10:08
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