Entering a program-microprocessor, Assembly Language

Entering a Program

In this section, we will explain the procedure for entering a small program on IBM PC with DOS operating system. Assume a program of addition of 2 bytes, as already  described for hand coding. The similar program is written along with some syntax modifications in it for MASM.

Before beginning the process, make sure that all the files namely NE.COM (Norton's Editor, LINK.EXE (linker), MASM.EXE (Assembler), DEBUG.EXE (debugger) are available in the similar directory in which you are working. Start the procedure with the given command after you boot the terminal and enter the directory containing all the files mentioned.

C> NE

You will get display on the screen as in given figure.

Now type the file name. It will be displayed on the screen. Assume one types KMB.ASM as file name, the screen display will be as display as in given Figure.

1798_nortons editor.jpg

Press any of the keys, you will get following figure as the screen display.

2343_nortons editor2.jpg

Make a note of that, for every assembly language program, the extension .ASM ought to be there though every time the assembler does not use the entire name KMB.ASM and uses only KMB to handle the file, the extension indicate that it is an assembly language program file.  Even if you enter a file name without using the .ASM extension, the assembler searches for the file name but with .ASM extension and if it is not available, it gives the message 'File not found'. Once you get the display as in above Figure. You are free to type the program. One can use another type of command line as given.

C> NE KMB.ASM

The above command will give the display as in shown in above Figure directly, if KMB.ASM is a newly opened file. Or else, if KMB.ASM already present in the directory, then it will be opened and  then the program in it will be displayed. You can change it and save (command F3-E) it again, if you want the changes to be enduring. Or else, simply quit (command F3-Q) it to abandon the changes and exit NE. The entered program in NE looks similar to in given Figure. We have to just assume that it is an assembly language program to be assembled and Store it with command F3-E. It will produce a new copy of the program in the secondary storage. Then stop the NE with command F3-Q.

Once the above process is finished, you can now turn towards the assembling of the above program. Note that all of the commands and displays shown in this section are for Norton's Editor. Other editors may need some other commands and their display style may be rather different but the overall procedure is the similar.

Note that before quitting the editor program the newly entered or modified file ought to be saved, or else it will be lost and will not be available for further assembling procedure.

2498_nortons editor3.jpg

Posted Date: 10/12/2012 7:03:59 AM | Location : United States







Related Discussions:- Entering a program-microprocessor, Assignment Help, Ask Question on Entering a program-microprocessor, Get Answer, Expert's Help, Entering a program-microprocessor Discussions

Write discussion on Entering a program-microprocessor
Your posts are moderated
Related Questions
Software Interrupts Software interrupts are the result of an INT instruction in an executed program.  It may be assumed as a programmer triggered event that immediately stops e

IRET : Return from ISR:- When an interrupt service routine is called, before transferring control to it, the IP, CS  register and flag registers are stored in the stack to ment

The modes are determined by the contents of the control register, whose format is given in Figure These modes are: Mode 0: If a group is in mode 0, it is divided into 2 sets.

Memory Segmentation : The  memory in an 8086/8088  based system is organized as segmented memory. In this scheme, the whole physically available memory can be divided into a n

Addressing mode of 8086 : Addressing mode specify a way of locating operands or data. Depending on the data types used the memory  addressing  modes and in the instruction  ,

Write a procedure to read a text file and copy its contents to another text file using 8086 assembly language .

Perform an extensive web search of popular microcontroller manufacturers (some of the major players) to select a suitable device for the system to control the lighting of a typical

LDS/LES Instruction execution :  LAHF : Load AH from Lower Byte of Flag: - This instruction loads the AH register with the lower byte of the flag register. This instruction ca

to find the matrix addition

i have a question.