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.model small
.586
.data
data1 db 34h
data2 db 56h
data3 dw 1 dup(?)
.code
.startup
mov bl,data1
mov bh,bl
and bh,0fh
and bl,0f0h
mov cl,4
shr bl,cl
mov al,10
mul bl
add al,bh
movzx cx,al
mov bl,data2
mov ax,0
clc
lop:add al,bl
daa
xchg ah,al
adc al,0
daa
xchg ah,al
loop lop
mov data3,ax
nop
nop
nop
.exit
end