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Index > Windows > You guys have been a great help.

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2



Joined: 26 Sep 2006
Posts: 92
2
Windows isn't as hard as I thought. I looked at examples on this forum
and figured out how to write to files! WIth that info,I pretty much could do
my binary counting the way I did it in DOS.

Code:
n=8
include 'win32ax.inc'
IO:
invoke CreateFile,f,GENERIC_WRITE,0,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0
mov [h],eax
p0:

invoke WriteFile,[h],b,n+2,r,0
mov cl,1
mov ebx,n

p1:
dec ebx
mov ch,cl
and cl,[b+ebx]
xor [b+ebx],ch
cmp ebx,0
ja p1

cmp cl,0
je p0

invoke CloseHandle,[h]
invoke MessageBox,HWND_DESKTOP,"binary is written to file","binary",MB_OK
invoke ExitProcess,0
.end IO;
f db 'bin.txt',0
b db n dup 48,13,10,0
h rd 1
r rd 1
    


Seriously,the EXE is small. 1536 bytes! That's smaller than any EXE I even
compiled in C. The Windows version is a bit faster in my system than the DOS. I think this is because NTVDM isn't as good as real DOS. COM files
run better in DOSBOX than that.

_________________
There are 10 kinds of people in the world.
Those who know binary and those who haven't met me.
Post 19 Nov 2006, 23:50
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17280
Location: In your JS exploiting you and your system
revolution
2 wrote:
The Windows version is a bit faster in my system than the DOS
I expect the native 32 bit code is giving you the speedup. NTVDM will impose a slowdown if you are using ports and other such "forbidden" things in the DOS code. But otherwise it is running at natve 16-bit code speed the same as real DOS. Unless of course you count the occasional Win32 interrupts and other background housekeeping things (<1% usually).
Post 20 Nov 2006, 12:50
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Filter



Joined: 08 Oct 2006
Posts: 67
Filter
revolution wrote:
2 wrote:
The Windows version is a bit faster in my system than the DOS
I expect the native 32 bit code is giving you the speedup. NTVDM will impose a slowdown if you are using ports and other such "forbidden" things in the DOS code. But otherwise it is running at natve 16-bit code speed the same as real DOS. Unless of course you count the occasional Win32 interrupts and other background housekeeping things (<1% usually).


Writes to the console screen can even be faster than in dos as long as you don't have the dos box full screen. I noticed this with some C++ programs I compiled with DJGPP a few years ago.
Post 20 Nov 2006, 17:14
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2



Joined: 26 Sep 2006
Posts: 92
2
I figured that is was faster because it writes to the file without even opening a console. I can pretty much measure it's speed because the MessageBox
doesn't appear till the file is already closed. I have never had any compiled
C program run that fast.
Post 20 Nov 2006, 18:48
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coconut



Joined: 02 Apr 2004
Posts: 326
Location: usa
coconut
you caught on quick to the api, nice going
Post 21 Nov 2006, 00:03
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2



Joined: 26 Sep 2006
Posts: 92
2
Yep,it's really kinda cool.
Post 21 Nov 2006, 10:03
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