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Erik Malund
06/10/09 07:18
Read: 248 times
Mt Airy, Nc
USA


 		 #165987 - bible time
Responding to: Rob Stoffels's previous message
Flip is not the problem, cause when i replace the PA=0x55 part with P0=0x55 flip flashes the µc without any problem...
PA=0x55 (re)set p0 pins for a brief moment (maybe 1us)
P0=0x55 (re)set p0 pins forever

erik

here are the links to "the bible"
Chapter 1 - 80C51 Family Architecture:
http://www.nxp.com/acrobat_d...ARCH_1.pdf
Chapter 2 - 80C51 Family Programmer's Guide and Instruction Set:
http://www.nxp.com/acrobat_d...UIDE_1.pdf
Chapter 3 - 80C51 Family Hardware Description:
http://www.nxp.com/acrobat_d...WARE_1.pdf




List of 19 messages in thread
TopicAuthorDate
AT89c51cc01 and External memory (keil/C51)      Rob Stoffels      06/09/09 10:54      
   Cross posted      Rob Stoffels      06/10/09 04:24      
   Is your problem with FLIP ?      David Prentice      06/10/09 04:36      
      No, think it's keil compiler      Rob Stoffels      06/10/09 05:25      
         Sounds like an error in the data sheet      David Prentice      06/10/09 06:08      
         bible time      Erik Malund      06/10/09 07:18      
            Itterations      Rob Stoffels      06/10/09 10:35      
               just won't get flashed into the µc??      Andy Neil      06/10/09 11:18      
               The compile will compile what you tell it      David Prentice      06/10/09 11:21      
                  RE: your example does not access any xdata at all      Andy Neil      06/10/09 11:31      
         RE: Rob Stoffels said:I think there is something that needs      Andy Neil      06/10/09 11:33      
            Going to try something different      Rob Stoffels      06/10/09 12:46      
               Broken Boards?      Andy Neil      06/11/09 05:42      
                  Memmory mapping question/ Bord fixed      Rob Stoffels      06/15/09 08:32      
                     If I read this correctly      Erik Malund      06/15/09 09:04      
                        Missunderstanding      Rob Stoffels      06/15/09 09:49      
                           xdata will just be whatever EXTRAM says      David Prentice      06/15/09 10:18      
                           do you have any external RAM?      Erik Malund      06/15/09 12:27      
   CC03 is working      Rob Stoffels      06/11/09 04:56      

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