Which Version of MASM are you Using?

• Like most function files, the MASM.exe file is constantly updated. In production, typically some date is chosen as a production date, but changes continue.

• If you are using only the Purple version of the Irvine book (3rd Edition), you are probably using MASM 6.13.

• If you have the 4th Edition of the book, you are using MASM 6.15.

• To be certain, type from the command line– C:> dir MASM*

• The lab has MASM 6.15 installed.

Assembling and Linking Using Masm613

• Template for Programs if you are using 6.13• Hello.asm• You have a choice of how to assemble

– As explained in the lab• Masm.exe • Link.exe• CV.exe

What to type on the Command Line

to assemble hello.asm

C:> Path = c:\masm613\binC:> Masm hello

• This assumes that masm.exe is in the bin subdirectory.

• Note that the extension of the file is not typed on the command line (it is assumed to be asm)

• This function creates an object file (file containing machine language code – binary file) named hello.obj

MASM.exe

• In lab, you type:C:> masm hello,hello,helloThis is (source filename, object filename, listing

filename)

• MASM.exe is an executable file that has a lot of options. /Zi (generates Codeview information in object file)

• In order to run codeview, you type:C:> masm /zi hello, hello, hello

• Can just commas to use default values

What to type on the Command Line

to Link Hello.obj

• Want to link Hello.obj with any external files used in the source code (none needed)

• Want to create an executable fileC:> Path = c:\masm613\binrC:> Link hello

• This creates an executable file. If you don’t put any of the extensions, it will ask you.

• This assumes that Link.exe is located in the binr subdirectory.

Link.exe

• 16-bit linker supplied with Microsoft Assembler.• Link.exe also has many options.• Use /CO to add Codeview information into the

executable file.• You type:

C:> Link /CO hello,,,,,

This is (objectfile, executable filename, mapfile, libraries, deffile)

Appendix D and QH

• Appendix D in the 4th Edition has the options for LINK listed.

• QH – Microsoft Helper You type:

C:> qh

Where is Your Irvine library

• You type:C:> dir c:\irvine\i*

• There should be a file called irvine.lib• This is the file of irvine library functions.• It must be linked with your object code if you are using

any of the irvine libraries (Writeint, RandomRange, etc….)• Copy irvine.lib to your current directory• You type:

C:> link hello,,,irvine,,

• Link should give a series of questions if no commas

ML.exe

• When you type masm …, another program is invoked.

• MLAssembles and links one or more assembly

language source files. The command line options are case sensitive.

ML options fn options fn … /link linkoptions

• Options listed in Appendix D

Assembling and Linking with MASM 6.15

• You type:C:> path = c:\masm615

C:> masm /Zi sourcefilename,,,

• You type

• C:>link /CO objectfilename,,,c:\masm615\lib\irvine16,,

Assembling and Linking with MASM 6.15

• More details are hidden

• Some lines of code are to removed from the template. (These lines of code are included in the Irvine.INC file)

• Template for MASM 615

• You type:C:> path = c:\masm615

C:> make16 hello

Irvine16.INC

• This is a text file that can be modified. You can modify it to meet your needs. Note that the model size is set. That line could be changed. Also with the .386 line.

Memory Models

• SMALL memory model– One code segment(64K) and one data

segment(64K). All code and data are near, by default.

• MEDIUM memory model– Multiple code segments and a single data

segment

Lab 6 changes

• Part A does not have to be changed to use MASM 6.15

• Part B – Note that Writeint does not allow outputs for bin, octal,

unsigned, etc… (use WriteBin, WriteDec, WriteHex, WriteInt instead)

– Need to add Include Irvine16.inc

• Part C– Again need to change Writeint to Writedec– Need to add Include Irvine16.inc