Hi James,

James Newton wrote:
> 
> volatile
> BYTE Stat = STAT_NO;	// status
> 
> volatile
> BYTE Timer1, Timer2;	// 10mS decrement timer

Put "extern" on the variables defined in .h files with no 
initialization. And redefine them again in the .c file with the 
initialization.

So the above should be in the .h:

  extern volatile
  BYTE Stat;	// status

  extern volatile
  BYTE Timer1, Timer2;	// 10mS decrement timer

And in the .c file:
  extern volatile
  BYTE Stat = STAT_NO;	// status

  extern volatile
  BYTE Timer1, Timer2;	// 10mS decrement timer

You should also put a compiler switch in the .h file to avoid double 
declaration. Example:
--main.h--
#ifndef _MAIN_H_
#define _MAIN_H_
.
.
..code here..
.
#endif /*_MAIN_H_*/


regards,
Reggie
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