MASM

I searched and found I can not use __asm in x64 in visual studio. Instead I have to use an external assembly file. How can I add external assembly file to my win32 console project? How can compile them? Can you explain step by step. How to build a mixed-source x64-project with a x64 assembly file in Visual Studio : 1) Start Visual Studio (Community) 2015 and choose FILE - New - Project . 2) In the next window choose Win 32 Console Application . 3) You get a confirmation. Click on Next > . 4) In the next window you can accept the default settings. Click on Finish . 5) Now choose PROJECT - Build

I was trying to make my program accept input without the user having to press enter, so I tried the following: mov ah,01h int 21h But it just crashes my program over an unhandled exception . This seems to be the way to do it according to much that I have read, so why isn't it working for me? Now, I am fairly new to this language so I still do not exactly understand the process of how this piece of code works, so I would also appreciate what the logic is behind accepting input by pressing enter and accepting input without the user having to press enter. MY OS is Windows, by the way. Your code

I am looking for a win32 api function that clears the console, much like the cls command Thanks! Devjeet This is pretty old, but should still work. Conversion to assembly language is left as an exercise for the reader, but shouldn't be terribly difficult (most of it is just function calls, and the multiplication is trivial): #include <windows.h> void clear_screen(char fill = ' ') { COORD tl = {0,0}; CONSOLE_SCREEN_BUFFER_INFO s; HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE); GetConsoleScreenBufferInfo(console, &s); DWORD written, cells = s.dwSize.X * s.dwSize.Y; FillConsoleOutputCharacter

What are the syntax differences between the NASM and MASM assemblers? Section 2.2 of the NASM documentation is titled Quick Start for MASM Users which lists the important differences between NASM and MASM. 来源： https://stackoverflow.com/questions/2035747/masm-nasm-differences

How can I write a far absolute JMP or CALL instruction using MASM? Specifically how do I get it to emit these instruction using the EA and CA opcodes, without manually emitting them using DB or other data directives? For example consider the case of jumping to the BIOS reset entry point at FFFF:0000 in a boot sector. If I were using NASM I could code this in one instruction in the obvious way: jmp 0xffff:0 With the GNU assembler the syntax is less obvious, but the following will do the job: jmp 0xffff, 0 However when I try the obvious solution with MASM: jmp 0ffffh:0 I get the following error:

I'm trying to write a subroutine that adds two large numbers in x86 assembly (MASM). The numbers are pointed at by the si and di registers, and the function should iterate from right to left, adding each data word and passing the carry, and saving the result in di. The number of data words to add is determined by a previous chunk of code. ... mov cx, ( number of data words to add ) adding: mov bx,cx ;copy the loop counter to bx lea ax,[di+2*bx] ;move ax to the destination word adc ax,[si+2*bx] ;add the source word into the destination word loop adding ;main sub loop ... Unfortunately, when I

Jan db " January$ " string db "Sun Mon Tue Wed Thu Fri Sat$" string1 db " 1 2 3$" string2 db " 4 5 6 7 8 9 10$" string3 db "11 12 13 14 15 16 17$" string4 db "18 19 20 21 22 23 24$" string5 db "25 26 27 28 29 30 31$" There are several ways to achieve your goal IN TEXT MODE : Display char by char : this way you can choose one color for every character. Access screen memory : at segment 0B800:0. Display the whole string with the same color. Next code does the job with the third option (the easiest). It was made with EMU8086: .stack 100h .data Jan db " January ",13,10 db "Sun Mon Tue Wed Thu Fri