# INTRODUCTION TO MICROPROCESSOR TRAINER KIT AND PROGRAMMING

admin January 18, 2011 2 Comments

In our experiments we used Micro 85 EB trainer kit from Vi Micro systems. The steps involved in doing programs in trainer kit are summarized below.

1.Write  the program

2.Prepare the hex code of the program

3.Enter the hex code to trainer kit in suitable locations(eg:From 4100 H)

4.Give sufficient data for program in data memory(eg:From 4200 H)

5.Run the program

6.Check for output

The programming procedure  is explained through an example. Consider the case of addition of two 8 bit numbers.

1.WRITE THE PROGRAM

MV1 C,00

LDA 4200

MOV B,A

LDA 4201

ADD B

JNC LABEL1

INRC

LABEL1:STA 4202

MOV A,C

STA 4203

HLT

2.PREPARE HEX CODE OF THE PROGRAM

Hex code is preparing in accordance with the Intel Hex file format.The hex code table is given below.Each instruction has a hex code. Consider the instruction ADD B.From the hex file format the corresponding hex code is 80.

Consider STA 4203 .The first  location should contain the hex code of STA. That is  32.Next location should contain the LSB of 4203, that is 03.The next location should contain the MSB of the address,that is 42.

The hex code table is given below

The hex code of the above program is given below.

 LABEL ADDRESS MNEMONIC CODE COMMENT LABEL1 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 410A 410B 410C 410D 410E 410F 4110 4111 4112 4113 4114 4115 MVI C,00  – LDA 4200 – – MOV B,A LDA 4201 – – ADD B JNC LABEL1 – – INR C STA 4202 – – MOV A,C STA 4203 – – HLT 0E 00 3A 00 42 47 3A 01 42 80 D2 0E 41 0C 32 02 42 79 32 03 42 76 Write the meaning of each instruction in this column

3.ENTER THE HEX CODE TO THE TRAINER

The obtained hex code now can be entered  to the trainer. Assume the program is entering from location 4100. Now to enter the code,press   SUB key +4100+NEXT key. Now the location will be 4100. Now start entering the program. After entering each code press the NEXT key to get the next location.

4.ENTER SUFFICIENT DATA

In the above program the  two numbers  which are to be added are to be supplied. Suppose  the data memory is from locations 4200.To write  data  press   SUB key +4200+NEXT key . Now the address will be 4200.Enter the first data in 4200.Now press NEXT key to get the next location .

5.EXCECUTE THE PROGRAM

Assume the program is from location 4100 and data memory is from 4200.Then the command to execute the program is  SUB key+4100+EXEC key. Now there   will be an E symbol on the display . This indicates the running of program.

6. CHECKING DATA MEMORY FOR RESULTS

After  few seconds the running is stopping by an interrupt . Then the data memory can be read t get the result of running by the  SUB key +4200+NEXT key. In our example  assume  the input numbers are 05 and 04 .The output after running the program is given below.

 ADDRESSES DATA INPUT/OUTPUT 4200 05 Input 4201 04 Input 4202 09 Output 4203 00 Output

##### Comments
• SHINESIMON
March 30, 2012

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May 5, 2009

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