Rainbow Electronics ATmega64M1 - Manual (Page 57)

57
8209A–AVR–08/09
ATmega16M1/32M1/64M1
Address Labels Code Comments
.org 0x002
0x002 jmp ANA_COMP_0 ; Analog Comparator 0 Handler
0x004 jmp ANA_COMP_1 ; Analog Comparator 1 Handler
... ... ... ;
0x03C jmp SPM_RDY ; Store Program Memory Ready Handler
;
.org 0xC00
0xC00 RESET: ldi r16,high(RAMEND); Main program start
0xC01 out SPH,r16 ; Set Stack Pointer to top of RAM
0xC02 ldi r16,low(RAMEND)
0xC03 out SPL,r16
0xC04 sei ; Enable interrupts
0xC05 xxx
When the BOOTRST Fuse is programmed, the Boot section size set to 2K bytes and the IVSEL
bit in the MCUCR Register is set before any interrupts are enabled, the most typical and general
program setup for the Reset and Interrupt Vector Addresses in ATmega16M1/32M1/64M1 is:
Address Labels Code Comments
;
.org 0xC00
0xC00 jmp RESET ; Reset handler
0xC02 jmp ANA_COMP_0 ; Analog Comparator 0 Handler
0xC04 jmp ANA_COMP_1 ; Analog Comparator 1 Handler
... ... ... ;
0xC3C jmp SPM_RDY ; Store Program Memory Ready Handler
;
0xC3E RESET: ldi r16,high(RAMEND); Main program start
0xC3F out SPH,r16 ; Set Stack Pointer to top of RAM
0xC40 ldi r16,low(RAMEND)
0xC41 out SPL,r16
0xC42 sei ; Enable interrupts
0xC43 xxx
12.1.1 Moving Interrupts Between Application and Boot Space
The MCU Control Register controls the placement of the Interrupt Vector table.