ruby krishna

xgate in ram / x gate in flash

Discussion created by ruby krishna on Jun 27, 2012
Latest reply on Jun 28, 2012 by kef

Hi,

  

I have a problem with HCS12x microcontrollers.

 

 Xgate code either run from RAM or the FLASH ( RAM is more preferrable as  x gate runs only at half the speed of CPU ).

 

i came to know that at the startup.c,  x gate code is copied from 'flash' to 'ram'.

 

Inorder to trace this two project files

 

1. with xgate in flash

2.with xgate in ram

 

I compared both the files  i.e startup.c and datapage.c for both x gate in ram and x gate in flash  . There is no single difference between the two....

 

i'm confused!!!.... howz the demarcation done between x gate in flash - > x gate ram in startup.c

 

help me out

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