$$DEV $3-$HOMEWORK $3$

$1-$ N$/7$ i$$lemini ger$$ekle$$tiren ve sonucu $P0\text{'}$da kalan$P1\text{'}$de g$$steren $8051$ Assembly kodunu yaz$$n$.$ Burada $N$;$P0$ 'dan okunan say$$d$$r$.$

Write $8051$ Assembly code that performs the $\frac{N}{7}$ operation and displays the remainder in $P1,$ result in $P0.N$ is the number read from $P0.$

$2-$ A$$a$$daki dahili veri haf$$zada veri transferi i$$lemini ger$$ekle$$tiren $8051$ Assembly kodunu yaz$$z$.$ Dolayl adresleme y$$ntemini ve DJNZ komutunu kullanarak, d$$ng$$ ile verileri $19h,18h,$dots,$10h$ adreslerinden $29h,28h,,20h$ adreslerine aktar$$n$.$

Write $8051$ Assembly code that performs data transfer from internal data memory as described below. Using the indirect addressing method and the DJNZ instruction, create a loop to transfer the data from addresses $19h,18h,$dots,$10h$ to addresses $29h,28h,$dots,$20h.$

$3-$ekildeki $c$ i$$in P$1\mathrm{.}0$'daki butona bas$$ld$$nda "topla" ad$$nda$,$ P$1\mathrm{.}2$'deki butona bas$$ld$$nda "carp" ad$$nda bir alt program $$a$$r$$lacakt$$r$.$

Topla alt program$$nda N$1+$N$2,$ carp alt programunda N$1$xN$2$ i$$lemi ger$$ekle$$tirilecek ve sonu$$ P$2\text{'}$ye yaz$$lacakt$$r$.$ Burada N$1$ bank$1$ deki R$0,$ N$2$ ise bank$2$ deki R$0\text{'}$d$$r $($I$$lemlerin sonucunun FFh'yi a$$mad$$n varsay$$n$$z$.).$ I$$lemi ger$$ekle$$tiren $8051$ Assembly kodunu yaz$$n$.$

$$ADT

Write $8051$ Assembly code that performs the following operation for the microcontroller depicted in the diagram: When the button at P$1\mathrm{.}0$ is pressed, a subprogram named "addition" will be called, and when the button at P$1\mathrm{.}2$ is pressed, a subprogram named "multiply" will be called.

In the "add" subroutine, $N1+N2$ will be calculated, and in the "multiply" subroutine, $N1xN2$ will be calculated. The results will be stored in P$2.$ Here, N$1$ is stored in bankI's R$0$ and N$2$ is stored in bank$2\text{'}$s R$0.($Assume that the result of the operations does not exceed $FFh.)$

$4-$ Bir i$$yerindeki $$ifreli kilit sisteminde $6$ adet kullan$$ kayd bulunmaktad$$r$.$ifreler bir look$-$up table'da kaydedilmi$$tir$.$ Kullan$$c$$lar P$1$'den $$ifre giri$$i yapmaktad$$r$.$ Kullan$$c$$n girdi$$i $$ifre tabloda bulunuyor ise P$0\mathrm{.}0$ lojik $1$ durumuna getirilerek kap$$ a$$lacakt$$r$.$

Bir look$-$up table tarayan ve P$1$'den okunan de$$er tabloda bulunuyor ise P$0\mathrm{.}0$' lojik $1$ durumuna getiren $8051$ Assembly kodunu yaziniz.

In an office's encrypted lock system, there are six users stored in a look$-$up table. Users enter their passwords from P$1.$ If the entered password matches one in the table, $P0\mathrm{.}0$ is set to logic $1$ to open the door.

Write $8051$ Assembly code that scans a look$-$up table and sets $P0\mathrm{.}0$ to logic $1$ if the value read from $P1$ is found in the table.