it means Microsoft Macro Assembler
The Microsoft Macro Assembler (abbreviated MASM) is an x86 high-level assembler for DOS and Microsoft Windows.Microsoft Assembeler for MS DosM As MToday, MASM is still the most popular assembler,[1] despite competition from new products such as NASM and Yasm, FASM, and HLA.
http://www.masm32.com/masmdl.htm
I use masm32 x86 compiler with Windows7 x64. It works. No problems.
its 16 bit it wont work without emulator.i dont recommend it for win xp check MASM its good
Clear direction flag (CLD) means that index registers will be incremented when looping through a string. Opposite of STD (set direction flag), which means the index registers of the string will be decremented when looping.
MASM (Microsoft Macro Assembler) offers several advantages, including powerful macro capabilities that facilitate code reuse and simplification, as well as robust support for Windows API development. It allows fine-grained control over hardware and system resources, making it suitable for performance-critical applications. However, its disadvantages include a steep learning curve for beginners and potential complexity when managing large codebases. Additionally, being primarily Windows-focused, it may not be ideal for cross-platform development.
There are several examples of assemblers: GAS - the GNU Assembler MASM - Microsoft Macro Assembler NASM - Netwide Assembler The assembler is the program which converts assembly code into machine code - a necessary step to prepare a program for execution.
In MASM (Microsoft Macro Assembler), basic syntax typically consists of three primary parts: labels, instructions, and comments. A label is followed by a colon and serves as a marker for code locations. Instructions are written using mnemonics, such as MOV, ADD, or SUB, followed by operands. Comments can be added using a semicolon (;), allowing programmers to annotate their code without affecting execution. For example: start: ; This is a label MOV AX, 5 ; Move the value 5 into register AX ADD AX, 3 ; Add 3 to the value in AX
push eax ;put eax on the stack so you loose nothing already in it. Invoke lstrcat, Addr string1, Addr string2 mov Result, OFFSET eax ; The return of the function is stored in EAX ;do whatever you want with Result pop eax ;bring back from the stack
Programs that can translate mnemonic codes are typically called assemblers. Assemblers convert assembly language, which uses mnemonic codes for instructions, into machine code that computers can execute. Some popular assemblers include NASM (Netwide Assembler), MASM (Microsoft Macro Assembler), and GAS (GNU Assembler). These tools are essential for low-level programming and system software development.
Irvine32 is a library designed for assembly language programming, particularly in the context of the x86 architecture. It provides a set of procedures and macros that simplify tasks such as input/output operations, string handling, and mathematical computations, making it easier for students and programmers to write assembly code. The library is often used in educational settings, especially in courses that teach low-level programming concepts using the MASM assembler.
Take the mid value of the no. of inputs. If the key is greater than the mid value then add the mid value and the last value; then divide by two. Again check the middle value for the key and keep repeating this until you find the key. If key is smaller than the mid value. Add the first value to the mid value and divide by two. You will find the new mid value to compare and check for the key. Loop it until you get the key location.