Ch3. instructions

Question 1

Data movement instructions

Answer 1

Copy data from one location to
another. - MOVE.W $1000,D0

Question 2

Integer arithmetic and logical instructions

Answer 2

can be oneoperand
(e.g. complement), two-operand or three-operand
instructions.
ADD.B D0,D1 - Binary ADD D0 to D1
O AND.B #%11110000, D1 - Bitwise AND the contents of D1

Question 3

Shift and rotate instructions:

Answer 3

left or right shifts and rotations.
ASL.B #1,D1 - shift left by one place the data in D1

Question 4

Bit manipulation instructions:

Answer 4

operate on bit fields.
BSET #1,D2 - set bit 1 in D2 to logic 1

Question 5

Floating-point instructions:

Answer 5

floating-point data movement,
arithmetic, comparison, square root, absolute value, and others.

Question 6

Control transfer instructions:

Answer 6

consist primarily of jumps,
branches, procedure calls, and procedure returns. Some
systems have return from exception instructions.
O BNE LABEL - Branch to LABEL if result not zero.

Question 7

System control instructions:

Answer 7

allow the user to influence
directly the operation of the processor and other parts of the
computer system.
O RESET - Provides a software controlled rest signal to rest of the
microcomputer.

Question 8

Special function unit instructions:

Answer 8

perform particular
operations on special function units (e.g. graphic units).