This club is here to help.<br>just post the question and have the answer....
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khalligan2000
Oct 3, 2001 8:15 am
From a professional programmers point of view which is better :<br>to use: xor ax, ax <br>or mov ax, 0<br><br>is there a rule of programming standards here...
343
sevencircle
Oct 4, 2001 6:09 am
It's depends on the purpose of the operations<br>Both of them consume 1 cpu step equally.<br>e.g. clearing count,number etc..<br>iF 0 means specific value, use...
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md1210us
Oct 9, 2001 3:32 am
your problem is your letting microsoft help you<br>with your program.<br>int21 is not a line of code,its a msdos subruten<br>and why did we go to all the ...
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md1210us
Oct 9, 2001 4:14 am
heres what i did.<br>get a computor,install dos 6.2,and gwbasic or basica.<br>than at the liberary you will find outdated progaming books(there to cheap to buy...
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md1210us
Oct 9, 2001 4:17 am
xor uses only 1 bite and mov anything uses at least 2 <br>also xor will set flags if you need to them set or not <br>and mov instuctions dont change any flags...
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md1210us
Oct 9, 2001 4:29 am
xor uses only 1 bite and mov anything uses at least 2 <br>also xor will set flags if you need to them set or not <br>and mov instuctions dont change any flags...
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md1210us
Oct 9, 2001 4:39 am
excuse me but [mov ax,0] uses 3 bites.<br>one for the mov ax part and 2 bytes for the data<br>(0000)zero as a word.<br>any time you want to set a reg to zero...
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linnphile
Oct 11, 2001 3:49 am
does anyone here know how to write graphics? I am terrible at graphics and looking for some help. I have this program here that I need to write graphics for....
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sevencircle
Oct 11, 2001 10:15 am
graphic program is very difficult.<br>You should study graphic card programming books.<br>VGA memory is mapped to screen.<br>You can set screen resolution by ...
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md1210us
Oct 12, 2001 2:35 am
depends on what kind of vidio hardware is in the<br>system your working on.<br>if you have a vga vidio card you can set the screan mode(1-9 in older 1-14 in ...
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linnphile
Oct 12, 2001 5:10 am
I guess I should have make the question more clear at the beginning. Specifically, I want to know how to relate the graphics to the original program. For ex,...
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sevencircle
Oct 13, 2001 12:52 am
suppose there are for buttons, UP DOWN LEFT RIGHT -each button changes airplain position,<br>and this program is airplain simulation program.<br>You can move ...
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md1210us
Oct 16, 2001 3:44 am
i guess from what your saying<br>if pressing the buttion inc some reg(a software reg)1 then you find the group of code that starts<br>with you pushing the ...
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Kapil
Oct 16, 2001 11:47 am
Hey... **YOU** are the one talking of reducing the coding load.. so whats the point in writing your own soft. ints when you want to give away the program??<br>...
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md1210us
Oct 18, 2001 5:16 am
what the hell are talking about.<br>im not putting you down.<br>im saying if you can code in assy,you will get more done,and with fewer bytes.<br>ok so you...
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Kapil
Oct 18, 2001 6:18 am
Hey man.. <br>First of all.. letme tell you something about India and the difference with other countries.<br>In India *unlike* other countries .. nobody gives...
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plane_flying_east
plane_flying...
Oct 19, 2001 2:50 am
> Does the MS-DOS program call an interrupt<br>> function to obtain the path to its file on disk?<br><br>It's been a while but I think the full path name...
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plane_flying_east
plane_flying...
Oct 19, 2001 3:05 am
The executable's path name follows the program's environment space. The segment of the environment space is located at offset 2Ch in the PSP. The PSP is the...
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plane_flying_east
plane_flying...
Oct 19, 2001 3:25 am
but whats a TSR doing anyway?<br>> i was under the assumtion the cpu ran one<br>> instruction at a time,and when a SR,OS,dos,<br>> even the bios, ...
361
plane_flying_east
plane_flying...
Oct 19, 2001 3:35 am
> From a professional programmers point of view<br>> which is better :<br>> to use: xor ax, ax <br>> or mov ax, 0<br>><br>< is there a rule...
362
plane_flying_east
plane_flying...
Oct 19, 2001 3:38 am
> anyway just remember if you dont want your<br>> progam screewing up from someone elses input<br>> quit MS cold turkey (soft int. like ...
363
plane_flying_east
plane_flying...
Oct 19, 2001 3:49 am
You're asking a very general question and you're getting very specific answers. Probably because answers to such general questions aren't possible so everyone...
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md1210us
Oct 19, 2001 8:43 am
"Indians are the ones to come up with the algorithm concept.."<br>wrong....<br>I came up with the algorithm concept!<br>and i got news for ya..<br>nobody gives...
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curlious
Oct 19, 2001 5:47 pm
I'm actually looking for a solution to this problem for C, but may need an assembly language funtion to do it, and I know practically nothing about assembly....
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curlious
Oct 19, 2001 6:10 pm
I have a question. How does an interrupt work?<br>If a cpu executes instructions sequentially, do you have to create a listener within your program for ...
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sevencircle
Oct 20, 2001 4:26 am
Every input from outside of CPU is Interrupt.<br>Keyboard typing causes interrupt. Mouse too.<br>And each interrupt has it's handlinsg rutine,...
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md1210us
Oct 20, 2001 9:42 am
you will find if you load an addr. like<br>seg b000h to seg b500h with a byte like 60dec<br>an assci char. will appeir on the screen(if your in a charator ...
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md1210us
Oct 20, 2001 10:48 am
the real interups (hard interups) is a phyical line (the int pin on the cpu)..and when an ext. device pulls this line to zero and if the mask int flag bit(a ...
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md1210us
Oct 20, 2001 12:02 pm
to clarify my last post new cpu;s may not have dedacated hard int pins.(save the reset pin )like old (8 bit)cpus had.<br>but polling the ports has<br>to be ...
