/*

SLdt  260422 

betrifft:
https://www.mikrocontroller.net/topic/584688#new

avrasm2
*/

.nolist
.include "tn13adef.inc"
;.include "tn85def.inc"
.list

.def    tmp0    = r16

.cseg
    rjmp    main
.org    WDTaddr
    in      tmp0,SREG
    sbrc    tmp0,7      ; Bit 7 – I: Global Interrupt Enable
     sbi    PORTB,0
    reti

main:
    ldi     tmp0,$07    ; PB0..2
    out     DDRB,tmp0
#if __ATtiny85__
    ldi     tmp0,(1<<WDIE)|(1<<WDCE)    ; Watchdog im Interrupt-Modus
#else
    ldi     tmp0,(1<<WDTIE)|(1<<WDCE)
#endif
    out     WDTCR,tmp0
    ori     tmp0,(1<<WDP2)|(1<<WDP0)    ; 0.5 s
    out     WDTCR,tmp0
    ldi     tmp0,(1<<SM1)|(1<<SE)       ; Power-down
    out     MCUCR,tmp0
    sei
main_loop:
    sleep
  rjmp      main_loop