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???
09/05/08 06:50
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#157965 - Already answered?
Responding to: ???'s previous message
Priyam Khanna said:
how can i make the 89S8253 access the external ROM for the boot-up code?

Peter Dannegger has already given you the answer to that:
http://www.8052.com/forum/read.phtml?id=157923

where do i need to mention the addresses for these external devices?

What external devices?

Each and every instruction that accesses an external device will need to know its address!

Please refer to the Keil Documentation for how to configure the Keil tools to your particular memory map:

http://www.keil.com/support/man/docs/uv3/

It sounds like you need to take a few steps back, and review the basics?

Have you worked-through (not just read) the Getting Started guide?

http://www.keil.com/support/m...g_apps.htm


List of 7 messages in thread
TopicAuthorDate
help auto run code 8253 on a PCB            01/01/70 00:00      
   Re            01/01/70 00:00      
      connect?            01/01/70 00:00      
         Yes - that is the purpose of the reset vector!            01/01/70 00:00      
   Kit            01/01/70 00:00      
      external ROM code            01/01/70 00:00      
         Already answered?            01/01/70 00:00      

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