This assignment relates to the 18F85K22 PIC chip. (microcontroller)

For the following section of a program answer the questions. Explain clearly.

LongDelay

movlw .255

movwf DelayT2,0

ldelaya

call Delay

decfsz DelayT2,f,0

goto ldelaya

return

Delay

movlw .255

movwf DelayTemp,0

delaya

decfsz DelayTemp,f ,0

goto delaya

return

a. What does this program do? Explain its operation.

b. What labels need to be defined?

c. Can I slow down this subroutine without major changes?

d. Can I speed up this subroutine without major changes?

6. Convert the following instructions to values instead of labels.

BTFSS STATUS, DC

BTFSS ________, _____

BCF INTCON, INTF

BCF ________, _____

7. Fill in the table for the different types of memory in the 18F85K22 PIC chip.

Type Main Use(s) Memory size bit length

8. Given the following section of code,

ORG .250

LINE1 MOVLW 25

MOVWF TEST,1

-What is the address of the instruction at LINE1?- ______________________