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org 000h

ljmp main

org 013h

ljmp i_int1

org 050h

main: mov sp,#60h

mov tcon,#00000100b

mov ie,#10000100b

mov 30h,#0

mov 31h,#0

sjmp $

i_int1: mov a,#1

add a,30h

mov 30h,a

clr a

addc a,31h

mov 31h,a

acall work

acall dir

reti

work: ;

ret

dir: ;

ret

end

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