1 Experiment Overview of the CME11E9-EVBU Development board & Familiarization with running simple programs
REFERENCES CME11e9-EVBU Development Board Instruction Manual (pdf file at the following link www.axman.com) EQUIPMENT & MATERIALS CME11E9-EVBU Development Board DOS compatible PC with windows 95 or higher AxIDE Software Features of CME11E9-EVBU Board OBJECTIVES At the conclusion of this experiment, you should be able : Understand the different components on the CME11E9-EVBU J Understand the difference between microprocessors and microcontrollers Know the purpose and significance of each component on the board Familiarize yourself with the process of setting up the board and downloading the files to the board. PRELAB Attach the handouts (use scotch tape) in your lab notebook as mentioned
Page 1 on the left hardcover of your notebook, Page 2 on the next page, i.e. the page attached to the front hardcover. Then turn the page (the one on which you attached Page 2) and leave its back side "blank", and on the right side attach the table of contents page. Then turn the page (the one on which you attached table of contents) and leave its back side empty and on the right side write the title of the experiment, label the page number as page number 1, and write the purpose of the experiment. Read through the different links attached under 'REFERENCES' & 'EQUIPMENT & MATERIALS'
PROCEDURE Overview of the CME11E9-EVBU Board The Axiom CME11E9-EVBU single board computer is a fully assembled, fully functional development system for the Motorola 68HC11 Micro controllers, complete with wall plug power supply and serial cable.
From theory you should know that the main elements of a microcomputer are the CPU, ROM, RAM and I/O ports. The IC (Integrated Circuit) or group of ICs which performs each of these functions is identified on the CME11E9-EVBU board by white lines and labels silk-screened directly on the printed circuit board. 1) Carefully inspect the board to find each of the following parts. Then list the manufacturer's part numbers for each of the devices used as: a. CPU b. PROMs c. RAMs d. I/O ports e. Major device in the keypad/display interface section The main programming interface to the CME11E9 board is the AxIDE program for 32bit Windows. This program communicates with the board via its COM port and includes a Terminal window for interfacing with other programs running on the CME11E9, such as the Buffalo Monitor or the Basic11 interpreter. It is also useful for displaying information from your own programs that send output to the serial port. In addition to the terminal interface, these programs also provide an easy to use programming and configuration interface to the board. Setting up the CME11E9-EVBU Follow these steps to connect and power on the board: 1. Connect one end of the supplied 9-pin serial cable to a free COM port on your PC. Connect the other end of the cable to the COM port on the CME11E9 board. 2. Apply power to the board by plugging in the wall plug power supply that came with the system. 3. Click on Start (at the left bottom of your screen), select Programs, then select AxIDE2, and finally select AxIDE. This should initially pop up a dialog box asking which serial com port to use, so select com 1. Then a window would pop up. 4. Press the RESET button (in the center of your CME11E9-EVBU board) and if everything is working properly, you should see a Buffalo Monitor prompt similar to that shown below in the Terminal window below in Figure 4.1. Press the ENTER key and you should see a prompt which is the > character.
Figure 1 5. Your board now is ready to use! Assembling source code
In this experiment, you will use a pre-written code (hello.asm) to tranmit characters through a serial port to the CME11E9 board. 1. Download the file hello.asm (click on the filename to save the file on your F drive) 2. Go back to the window that popped up in step 3 (Setting up the CME11E9-EVBU) and use the click on the "build" option.This will prompt you for the file to be assembled, so choose the file "hello.asm" that you saved on your F drive in step 1 above. 3. Step 2 should produce two files: "hello.lst" and "hello.s19", but will only open a new window for "hello.lst" file. Please note that I have added the links for "hello.lst" and "hello.s19" that I assembled, but do not download them unless you have problems while assembling your code in the lab. Running your Program After creating an S-Record file you can "upload" it to the development board for a test run. 1. Press and release the RESET button on the CME11E9 board. You should see the Buffalo Monitor message as in Figure 4.1.. Hit the ENTER key to get the monitor prompt. 2. Type "LOAD T" (and Press ENTER). This will prepare buffalo to receive a program (the program is now waiting for you to upload the file). Press the Upload button from the menu to send a text file to the board. When prompted for a file name, select the file that was just created in the previous section called: HELLO.S19 Your program will be sent to the board thru the serial port. If your board returns "DONE", implies successful transfer of the text file. 3. When finished loading you will see the > prompt again. Type "CALL 2400" (and press ENTER). This tells buffalo to execute the subroutine at address $2400, which is the start of our test program. 4. If everything is working properly you should see the message "Hello World" on your terminal screen then, since we return at then end of our program, a line containing the internal register status displayed by buffalo and the buffalo prompt. You can modify the hello program to display other strings or do anything y...