On Thursday 30 January 2003 01:48, somebody wrote > At 17:08 29.01.2003 -0800, you wrote: > >Can anyone please help me regarding MC68HC11 microcontroller... > > > >I loaded a program into the internal EEPROM using JBUG11 but I just > >couldn't execute the program properly. I tried tracing it and I > > found out that the flow of the program is running properly except > > for the output ports are not updated! Why is that so? > > I'm not familiar with the 68HC11, but I had a similar problem with a > PIC microcontroller. The simple solution was to set the correct data > direction, I simply forgot that. If the ports you're trying to use > are bi-directional, they might be set to input by default to protect > external hardware.
I would echo the above and add that you should print the datasheet, and take it to bed for a week. In many, there is a list of how things come up by default from a power up, reset, or brown out. You are wrongly configured. -- Regards, Declan Moriarty. -- Author: Declan Moriarty INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
