Question

80% 10:20 AM *スス0 5_607098276.. 1. Study the following instructions sequence. Determine the final content is WREG and 0x012 movlw 0 movwf 0x12,A movlw Ox22 addwf Ox12,W, A addwf Ox12, W,A addwf 0xl2,W,A 0x12, W,A addw -bytes per bank. 2. The data memory is devided into 3. Write an insturctions sequence to add 0x16 and 0XCD. Place the result in 0x018 of the file register 4. What is the largest hex value that can be moved into a location in file What is the decimal uivalent of the hex value? reg 5. ADDWF PORTB, W, A' put the result in

please do question 1

Answer 1

It is asked to do question 1. So, i'm doing question 1 only if you have problem or want me do do other 4 question also, ask in comment i will provide answer of other 4 also.

Q) Study the following instructions sequence. Determine the final content is WREG and 0x12.

movlw 0
movwf 0x12,A
movlw 0x22
addwf 0x12,W,A
addwf 0x12,W,A
addwf 0x12,W,A
addwf 0x12,W,A

Sol) movlw 0 - here 0 is loaded in WREG to clear it. WREG = 0

movwf 0x12,A - here, the WREG is moved to location 0x12 to clear this location. Now, [0x12] = 0

movlw 0x22 - value 0x22 is moved to WREG. WREG = 0x22

addwf 0x12,W,A - Value at location 0x12 is added with value of WREG and result that is sum is stored in WREG. WREG = [0x12] + 0x22 = 0 + 0x22 = 0x22. Here, WREG = 0x22, [0x12] = 0

addwf 0x12,W,A - Value at location 0x12 is added with value of WREG and result that is sum is stored in WREG. WREG = [0x12] + 0x22 = 0 + 0x22 = 0x22. Here, WREG = 0x22, [0x12] = 0

addwf 0x12,W,A - Value at location 0x12 is added with value of WREG and result that is sum is stored in WREG. WREG = [0x12] + 0x22 = 0 + 0x22 = 0x22. Here, WREG = 0x22, [0x12] = 0

addwf 0x12,W,A - Value at location 0x12 is added with value of WREG and result that is sum is stored in WREG. WREG = [0x12] + 0x22 = 0 + 0x22 = 0x22. Here, WREG = 0x22, [0x12] = 0

So, finally we get content of WREG = 0x22 and [0x12] = 0.

I have tried to explain the solution as simple and briefly as possible if you find any problem regarding explanation or answer ask in comment.