AVR-Chat

OK.  i updated to the latest service pack on AVR Studio, which changed 
the problems I am having with the stack.

   Now, when I  am simulating it, and I trace the PC and the SP, I get 
some strange results.   The stack pointer is tasking on some strnage 
values, such as 0xdd, when the first rcall is executed.   But stranger 
still  is when I hit the RET instruction in the subroutine.  Despite the 
value of 0xdd in the stack pointer register, the code returns to address 
0x0000.    WHY is it doing this?

tom

At 02:32 PM 3/01/2007, you wrote:
>some strnage
>values, such as 0xdd, when the first rcall is executed.

Again perfectly normal, 0xdf (ramend) -2 bytes of the return address
takes you to 0xdd

 >the code returns to address
>0x0000.

Works perfectly here, just checked it again. Try reassembling
again (build and run)

Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************