MASM and debug are great tools for students to assemble 8086 based codes using a windows based system. usually debug can be accessed in a windows computer simply typing 'DEBUG'in command prompt and MASM needs to be installed separately. But the story is different for Windows 7 x64 or 64 bit version. These programs are not available for this windows version. But using a simple technique using a software called DOSBox, you can run these Debugging tools in 64 bit versions of Windows.
DOSBox is a free emulator software may be used to run old windows programs and dos games in higher versions of windows.
To run MASM and DEBUG, you need to follow these steps in your Windows 7 (x64) based PC.
- Download DOSBox from here.
- Install the software, just use usual installation options. The DOSBOX now allows you to run any 16 bit and 32 bit exe files.
- Download 8086 MASM Assembler from here. extract the file and you'll get a folder named 8086. This folder contains MASM.exe, DEBUG.exe and some other files for code compilation.
- Copy this folder to C:\ so the path C:\ 8086 will contain these files.
To run Debug or masm, just follw this procedure.
1. Double click on DOSBox.exe. In the DOSBox window, type 'mount c c:\8086'. Now the c drive will mount as a local directory c:\8086. then type C:\ to move from Z:\ . Now type the file or program that you need to run such as masm or debug.
Now you can assemble programs as you do in windows xp in microprocessor lab by using the usual commands.
edit filename.asm
masm filename.asm
link filename
debug filename.exe
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