1. The following 68000 assembly language instructions are all incorrect. In each case, what specifically is the error?
(Hint: Consult the 68000 Instruction Set)
a. EXT.B DO
b. CMP.B #10,#20
c. ASR.W #9,D3
d. RTS.B
e. EOR.W (A1)+,D5
f. ANDI D1,D2
g. CLR.L A4
h. SWAP A3
i. ADDQ.L #14,D1
j. MOVEA.B #9,A1
2. Describe the following 68000 condition code register (CCR) flags
a. Z
b. N
c. C
d. V
3. Translate this high level language into 68000 assembly language. Assume the labels ‘T', ‘X', and ‘Y' have already been defined as references to specific memory addresses.
if T is greater than 10
then X=3
else Y=6
end if
4. Explain what the following 68000 assembly language does. Describe each line of code AND describe the overall effect of the program.
MOVE.B #10,D1
MOVEA.L #$500,A1
LOOP CLR.L (A1)
ADD.L #4,A1
SUB.B #1,D1
BNE LOOP
STOP #$1000