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???
04/09/05 19:50
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 		 #91308 - Boot ROM address range
Responding to: ???'s previous message
As I found call outside the 1K FC00H to FFFFH range the Philips boot ROM is supposed to occupy I dumped from F800H to FFFFH instead and found valid code there too that fits with the code at FC00H. Is the boot ROM really 2K bytes in size?

Ian

List of 34 messages in thread
TopicAuthorDate
Philips p89c51RDx Programmer project            01/01/70 00:00      
   Useful Project            01/01/70 00:00      
   Useful Project. Count me in            01/01/70 00:00      
      lets try something....            01/01/70 00:00      
         No Go            01/01/70 00:00      
            see my "other things.."            01/01/70 00:00      
               bootrom code            01/01/70 00:00      
                  Jan, please email me at .....            01/01/70 00:00      
                  BootRom Code            01/01/70 00:00      
                     Boot ROM address range            01/01/70 00:00      
                        2kb boot code            01/01/70 00:00      
                           B oot from External Memory            01/01/70 00:00      
                              !EA/Vpp            01/01/70 00:00      
   why not the simple solution: NoTouch            01/01/70 00:00      
      Too Late            01/01/70 00:00      
         Try this, it has worked for some            01/01/70 00:00      
   Philips's angwer            01/01/70 00:00      
      the most often changed            01/01/70 00:00      
      an RX2 'fix' from the horse's mouth...            01/01/70 00:00      
         neat            01/01/70 00:00      
         Nice!            01/01/70 00:00      
            I'll look tomorrow...            01/01/70 00:00      
               I take it back            01/01/70 00:00      
                  you're NOT as stupid as you think.......            01/01/70 00:00      
         Not possible !!!            01/01/70 00:00      
            respectfully disagree...            01/01/70 00:00      
               Re: respectfully disagree...            01/01/70 00:00      
                  I didcussed it above earlier today...            01/01/70 00:00      
               difference Philips.vs.Atmel            01/01/70 00:00      
                  other things...            01/01/70 00:00      
                     lets make the ckt even simpler...            01/01/70 00:00      
                     maybe ?            01/01/70 00:00      
                        using the EA pin            01/01/70 00:00      
               which bits            01/01/70 00:00      

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