avr -asm

.nolist
.list
.dseg
RAM_TAB: .byte 256

.cseg
jmp RESET   ; Reset Handler

; Interrupts vector table / change to your procedure only when needed
jmp EXT_INT0    ; IRQ0 Handler
jmp EXT_INT1    ; IRQ1 Handler
jmp EXT_INT2    ; IRQ2 Handler
jmp EXT_INT3    ; IRQ3 Handler
jmp EXT_INT4    ; IRQ4 Handler
jmp EXT_INT5    ; IRQ5 Handler
jmp EXT_INT6    ; IRQ6 Handler
jmp EXT_INT7    ; IRQ7 Handler
jmp TIM2_COMP   ; Timer2 Compare Handler
jmp TIM2_OVF    ;Timer2 Overflow Handler
jmp TIM1_CAPT   ;Timer1 Capture Handler
jmp TIM1_C0MPA  ;Timer1 CompareA Handler
jmp TIM1_C0MPB  ;Timer1 CompareB Handler
jmp TIM1_0VF    ;Timer1 Overflow Handler
jmp TIM0_COMP   ;Timer0 Compare Handler
jmp TIM0_OVF    ;Timer0 Overflow Handler
jmp SPI_STC     ;SPI Transfer Complete Handler
jmp USART0_RXC  ;USART0 RX Complete Handler
jmp USART0_DRE  ;USART0,UDR Empty Handler
jmp USART0_TXC  ;USART0 TX Complete Handler
jmp ADC1        ;ADC Conversion Complete Handler
jmp EE_RDY      ;EEPROM Ready Handler
jmp ANA_COMP    ;Analog Comparator Handler
jmp TIM1_C0MPC  ;Timer1 CompareC Handler
jmp TIM3_CAPT   ;Timer3 Capture Handler
jmp TIM3_COMPA  ;Timer3 CompareA Handler
jmp TIM3_COMPB  ; Timer3 CompareB Handler
jmp TIM3_COMPC  ;Timer3 CompareC Handler
jmp TIM3_OVF    ;Timer3 Overflow Handler
jmp USART1_RXC  ;USART1 RX Complete Handler
jmp USART1_DRE  ;USART1,UDR Empty Handler
jmp USART1_TXC  ;USART1 TX Complete Handler
jmp TWI         ;Two-wire Serial Interface Interrupt Handler
jmp SPM_RDY     ;SPM Ready Handler

;//////////////////////////////////////////////////////////////////////////////
EXT_INT0:   ; IRQ0 Handler
EXT_INT1:   ; IRQ1 Handler
EXT_INT2:   ; IRQ2 Handler
EXT_INT3:   ; IRQ3 Handler
EXT_INT4:   ; IRQ4 Handler
EXT_INT5:   ; IRQ5 Handler
EXT_INT6:   ; IRQ6 Handler
EXT_INT7:   ; IRQ7 Handler
TIM2_COMP:  ; Timer2 Compare Handler
TIM2_OVF:   ;Timer2 Overflow Handler
TIM1_CAPT:  ;Timer1 Capture Handler
TIM1_C0MPA: ;Timer1 CompareA Handler
TIM1_C0MPB: ;Timer1 CompareB Handler
TIM1_0VF:   ;Timer1 Overflow Handler
TIM0_COMP:  ;Timer0 Compare Handler
TIM0_OVF:   ;Timer0 Overflow Handler
SPI_STC:    ;SPI Transfer Complete Handler
USART0_RXC: ;USART0 RX Complete Handler
USART0_DRE: ;USART0,UDR Empty Handler
USART0_TXC: ;USART0 TX Complete Handler
ADC1:       ;ADC Conversion Complete Handler
EE_RDY:     ;EEPROM Ready Handler
ANA_COMP:   ;Analog Comparator Handler
TIM1_C0MPC: ;Timer1 CompareC Handler
TIM3_CAPT:  ;Timer3 Capture Handler
TIM3_COMPA: ;Timer3 CompareA Handler
TIM3_COMPB: ; Timer3 CompareB Handler
TIM3_COMPC: ;Timer3 CompareC Handler
TIM3_OVF:   ;Timer3 Overflow Handler
USART1_RXC: ;USART1 RX Complete Handler
USART1_DRE: ;USART1,UDR Empty Handler
USART1_TXC: ;USART1 TX Complete Handler
TWI:        ;Two-wire Serial Interface Interrupt Handler
SPM_RDY:    ;SPM Ready Handler
reti        ; return from all no used

;//////////////////////////////////////////////////////////////////////////////
; Program start
RESET:

cli         ; disable all interrupts
;  Set stack pointer to top of RAM
ldi R16, HIGH(RAMEND)
out SPH, R16
ldi R16, LOW(RAMEND)
out SPL, R16


ldi r16, 0x00       ;do r16 ładujemy 00000000 binarnie
out DDRA, r16
ldi r16, 0xFF       ;do r16 ładujemy 11111111 binarnie
out DDRB, r16

;ładujemy adres tablicy ROM
ldi r16, byte3(ROM_TAB<<1)
out RAMPZ, r16

ldi r30, low(ROM_TAB<<1)
ldi r31, high(ROM_TAB<<1)
ldi r28, low(RAM_TAB)
ldi r29, high(RAM_TAB)

kopiujZRomDoRam:
    elpm r16, Z+
    cpi r16, 0
    brne kopiujBajt
    elpm r16, Z
    cpi r16, 0
    breq koniec
    sbiw Z, 1
    elpm r16, Z+

kopiujBajt:
    st Y+, r16              ;kopiujemy wartość i przechodzimy do kolejnej komórki tablicy ramu
    jmp kopiujZRomDoRam     ;jeśli większa od 0 , czyli mamy więcej niż 255 elementów

koniec:
    rjmp koniec

ROM_TAB: .db 0x74, 0x74, 0x74, 0x73, 0x00, 0x74, 0x74, 0x74, 0x00, 0x00

.exit