Programming PIC Microcontroller with MPASM

MPASM is Microchip-made program that is used to compile the program we have created for PICmicro.After compiled microcontroller family, which has created the program will be transformed into specific codes (binary / hex) is only known by its the microcontroller .
Therefore, files generated by MPASM will with extension.hex. The following is an example of a hex file.
: 0A00000083168501831205140428FD
: 00000001FF
We do not understand the meaning of these numbers, but the microcontroller PIC16x84 will understand. After you compile your program and have made a file. Hex it is now time to put the program into the microcontroller and view performance microcontroller.
MPASM program is a compilation of the program not only for the microcontroller PIC16x84 course, but for PICmicro microcontroller families. This program is working in the Windows environment and there are unisex which DOS environment work in version 5.0 and above.
MPASM program can be used in 2 ways:
a.For produce absolute code (absolute code) that can be executed directly by the microcontroller.
b.For generate object code (object code) that can be compiled dilinked with other modules.
Source files used as input to the MPASM has a specific format. This format must be followed to prevent errors during assembly processes carried out. If there are errors in the source files, then during the assembly process will produce an error message if an error occurs, it will produce an error file (*. err) which can be read by a text editor program. Source files can be created by following the rules as follows.
Each line in the source file can contain four types of information are:
a.Label
A label must begin in the first column. This label can be followed by a colon (:), spaces, tabs, or the end of the line. Labels must begin by a letter or underscore and may contain letters, underscores or sign Tanya. Labels can use up to 32 characters in length.

b.Mnemonic
A mnemonic assembly instruction, assembler directive, calling the macro must begin in the second column or more. If there are labels on the same line, the command must be separated from that label by a colon or by one or more spaces or tabs. One or more spaces must be used to separate labels and also between the mnemonic mnemonic and Operands.

c.Operand
Operands follow the mnemonic. Operands must be separated from the mnemonic by one or more spaces or tabs. After the dot-coma by MPASM will be considered as comments and will be ignored by MPASM.

d.Comments
Comments can be included following the Operands, mnemonic or label and can begin in any column. Maximum width of the column is 255 characters.

To start using MPASM is very easy. Once you activate this program will look like in the Figure 1 will be obtained.

Figure 1.MPASM program source input display

You can just enter the file will be compiled through the BROWSE button. After that live press the Assemble. If the source file does not contain errors, it will be shown in green as figure 3 below

Figure 2. the result file compilation OK

Figure 3. compilation OK report

, but if produced error will be shown in red. To find out what mistakes we have done can be seen in the *. err file that is automatically generated.

Figure 4. the result file compilation NG

Figure 5. compilation NG report

Figure 6. the error message file

Note the error messages in the file *, err. Then fix the error, and compile with MPASM. If all error messages have been corrected, then the *. err file will not be produced again.