1. 8 bit addition:
clr c
mov a,#10
add a,#09
end2. 8 bit subtraction:
clr c
mov a,#10
subb a,#09
end
3. 8 bit multiplication:
clr c
mov a,#03h
mov b,#01h
mul ab
mov r1,a
mov r0,b
end
4. 8 bit division:
clr c
mov a,#03h
mov b,#04h
div ab
mov r1,a
mov r0,b
end
5. 16 bit addition:
clr c
mov a,#05h
mov r0,#06h
mov r1,#08h
mov r2,#07h
add a,r1
mov r6,a
mov a,r0
addc a,r2
mov r5,a
end
6. 16 bit subtraction:
clr c
mov a,#05h
mov r0,#06h
mov r1,#08h
mov r2,#07h
subb a,r1
mov r6,a
mov a,r0
subb a,r2
mov r5,a
end
7. 16 bit to 8 bit multiplication:
[ r0b
* a
r6r7 ]
(clr c
mov r0,#43h
mov b,#21h
mov a,#0ah
mul ab
mov r7,a
mov r6,b
mov a,#0ah
mov b,r0
mul ab
add a,r6
jnc next
inc r6
next:mov r6,a
mov r5,b
end)
8. 16 bit to 16 bit multiplication:
[ r0r1
*r2r3
r4r5r6r7 ]
clr c
mov r0,#01fh
mov r1,#02fh
mov r2,#08fh
mov r3,#09fh
mov b,r1
mov a,r3
mul ab
mov r7,a
mov r6,b
mov b,r3
mov a,r0
mul ab
add a,r6
jnc next
inc b
next:mov r6,a
mov r5,b
mov b,r1
mov a,r2
mul ab
add a,r6
jnc next1
inc r5
next1:mov r6,a
mov a,b
add a,r5
jnc next2
inc r4
next2:mov r5,a
mov b,r0
mov a,r2
mul ab
add a,r5
jnc next3
inc r4
next3:mov r5,a
mov a,r4
add a,b
mov r4,a
end
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