Setting up Visual Studio for Assembly MASM

What is MASM ?

The Microsoft Macro Assembler (MASM) is an x86 assembler that uses the Intel syntax for MS-DOS and Microsoft Windows.

Let’s start

1. Create project

Create a new project -> Select Empty Project(C++)

Create new Project

2. Make the directory clean (Optional)

Delete Header Files And Source Files directory.

Clean directory

3. Create MASMTest.asm

Select project and right click -> Add -> New Item

New Item

4. Select Build Customization

Select project and right click -> Build Dependencies -> Build Customiztions

Build Customizations

Build Customizations

5. Set Item Type

Select MASMTest.asm and right click -> Properties

Item Type

Select Microsoft Macro Assembler

Select Item Type

6. Write test code

; MASMTest.asm - add two 32-bit integers
; HardyHu

.386
.model flat, stdcall
.stack 4096
ExitProcess proto, dwExitCode:dword

.data

sum DWORD ?

.code
main proc
	mov eax, 7
	add eax, 4
	mov sum, eax

	invoke ExitProcess, 0

main endp
end main
ASM

7. Run and Debug

Break point and run

Run

Run to line 16

Registers

Run to line 17

Memory

No Registers or Memory Windows ?

Open Windows