Harry H. Arends wrote:
> I defined a RAM address to act as a flag register;

No you didn't, at least not according to the code you showed:

> ; --- Flags
> #define  NEW_PACKET FLAGS,0  ; New packet received
> #define  NOCV  FLAGS,1  ; No CV found
> #define  RDONLY  FLAGS,2  ; CV read only
> #define  DCC4BYTE FLAGS,3  ; DCC command 4 bytes
> #define  PWM_DIR  FLAGS,4  ;*Direction of travel, 1=Forward 0=Reverse
> #define  CV513Plus FLAGS,5  ;*Signal if second address
> #define  PROG_2X  FLAGS,6  ; 2x prog
> #define  RESET_FLG FLAGS,7  ; reset packet

This defines a few string substitution macros for particular bits in a byte
called FLAGS.  There are no RAM addresses being defined here at all.

> Is it possible that i can set or reset during debug one or more of
> the flags using the stimulus or by other means.

You can change values of RAM being watched in a watch window.


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