I need explanation about mov instruction
Hi,why is 0 passed into esi if I use mov esi, vec; or [vec] instead of mov esi, vec1?Code: (look at NormalizeVec)class VectorSoA{public: VectorSoA():test(0) { vec =...
View ArticleReadInt Error
Show Parent PostHide Parent PostAuthor: Therese LandryDate: Monday, November 19, 2007 5:41:43 PM CSTSubject: RE: HW_6Are there more than one ways to detect if a letter is entered rather than a number?...
View ArticleProblem with moving cursor
I am writting a program that will move a cursor and will draw * when a mov is given. Supposly the cursor should be able to move in any direction (E,,W,S,N,SW,EN...etc) The directions for E,W,S,N are...
View Articlegcc inline assembly and BTS
Hi all,I am not a x86 assembly programmer myself, however, I need atomic BTS in my C program. I've managed to write the following code, however, the return values are bogus. Any idea where the problem...
View Articlepic micro debugger 12f675
Hi all, I have a PIC debugger written in pure 32bit pmode code it is very fast (4 Mhz realtime ) runs under a dos box in windoze. If anyone is interested it can be found at...
View Articleprecision timing
what's your favorite way of doing highly accurate timings nowadays?I was thinking about using the timestamp counter, but then I have to go and calculate the cpu speed. Is there a favorite way of doing...
View Articlehow to receive input characters when using tasm
Sorry for my stupid question. but I have tried many times. I can receive the input characters if I run the program directly, but I can't receive characters from the key if I use tasm to debug the...
View ArticleHelp getting a loop to not overwite important values
What I'm trying to do here is add an overhead to every single system call. I can do this either by modifying ~320 C methods or I can do it in one place in i386 assembly land. As you might have guessed...
View ArticleCounting Number of Bits Set
I'm working on a program where I need to count the number of bits that are set in a Word (AX) or DWord (EAX). Below is the code I'm using now. I'm just wondering if there is some special CPU...
View Articledecoding single instruction
I want to make a function that decodes any single instruction.Opcode Instruction Description89 /r MOV r/m16,r16 Move r16 to r/m16this is from intels INSTRUCTION SET REFERENCESo I am wondering is this...
View ArticleSATA questions
Hello all,A little while ago I started writing my own OS, it is now going quite well, I have a working floppy driver, and have implemented the FAT12 file system with it to open, save and delete files,...
View ArticleConverting this code to support Windows 98
Hey there everyone..I'm pretty new in this forum and also with Assembly, to be honest I haven't programmed anything in Assembly.I'm a VB Programmer and I work with some C/C++But well that's not the...
View Articlehelp with NASM...int 21h with 04bh
Hi guys, I'm new to assembly!!!...I need to know how can I run a program with another program. I have being trying to use int 21h with 04bh, but...less not say anything. another thing is that I'm stuck...
View Articleaddress spaces in protected-mode of Pentium
Hello I would like to ask what are the three address spaces supported by Pentium in the protected-mode?10x all
View ArticlePaid Project
Hello,Not sure if this is the right section for this post - if not then mods please feel free to move it.I have a commercial application that runs on Linux (CentOS v5) that I need to have "reversed"....
View ArticleDetect ATX Power Supply
Does anybody know of a "generic" way to detect whether a computer has an AT or ATX power supply? It seems like there should be a bit set somewhere in the CMOS or BIOS that would tell you, but I can't...
View Articleadding double word
First of all let me thank you for taking the time to read and possibly respond to this question. Second this is a homework assignment so I am not looking for someone to do this for me just answer a few...
View Articleconvert bcd number to ascii
Hello How can i convert bcd number to ascii ?I use nasm.Please help
View ArticleMultiplication and Division in NASM
hi,I want to know how to perform [color=Green][b]Multiplication and Division[/b][/color] in [b]NASM[/b] (Netwide assembler).Please give answer about that in full discription because I am new to...
View Articleproblem with setting BP in GDB
here is the code that i used with command line GDB and DDD GUI interface for GDBI tried setting the break points and used the right assembler options and linking options . Thou the programm dosnt stop...
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