Motorola CMD11E1 manual Tips and Suggestions, AxIDE

Tips and Suggestions

Following are a number of tips, suggestions and answers to common questions that will solve most problems users have with the CMD11E1 development system. You can download the latest software from the Support section of our web page at:

www.axman.com

AxIDE

∙If you’re program code memory, make sure jumpers 1 and 2 are set parallel to the MC68HC11 micro, not pointing away from it.

∙If you’re trying to start a program in external EEPROM (U7), make sure jumpers 1 and 2 are NOT installed.

∙Be certain that the data cable you’re using is bi-directional and is connected securely to both the PC and the board. Also, make sure you are using the correct serial port.

∙Make sure the correct power is supplied to the board. You should only use a 9 volt, 200mA adapter or power supply. If you’re using a power strip, make sure it is turned on.

∙If the configuration file loads (the first 100 bytes or so), but you get a time-out error when the program section begins to download, make sure the HC11 is internally configured correctly by selecting Configure Processor from the main menu. During program development the EEON should be enabled. The other bits should be disabled.

∙Make sure you load your code to a valid address. See the Memory Map.

Code Execution

∙Make sure ALL jumpers are set correctly according to your board’s configuration. Read the hardware manual section on jumpers carefully if you’re not sure.

∙Always remember to remove JP1 and JP2 after programming the code memory.

∙If you programmed your code into external EEPROM memory and it doesn’t run, check the HC11 reset vector, located at $FFFE - $FFFF. These 2 bytes contain the reset vector address where execution will begin when the unit is powered on or reset. The default vector is E000, which is the beginning of the 8k program address space.

∙Verify that all peripheral devices are initialized properly in your code. Failure to initialize the serial port, for example, is a common problem. This is usually the case when the code works under buffalo but not after programming.

ImageCraft C

∙Your make or build should create a .MAP file. Some versions change this to a .MP file. At the top of this file should be a label __START. This is where you should CALL or GO to when debugging in buffalo.

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