1.
Which general purpose registers can be used with instruction
LD?
Exercises 15.6 Practice Problems
2.
Which general purpose registers can be used with instruction
LDI?
In questions 3-12, determine the contents of the destination register after each subsequent operation. Assume each register maintains its value after each question/operation.
3.
LDI r17, 0x80
4.
LDI r18, 0x15
5.
COM r18
6.
AND r18, r17
7.
ORI r17, 0x03
8.
EOR r17, r18
9.
SER r18
10.
SUB r18, r17
11.
NEG r18
12.
MUL r17, r18
In questions 13-20, determine the contents of
SREG after each operation. Assume each register maintains its value after each question/operation. Assume any unknown flags in SREG are clear.
13.
LDI r18, 20
14.
LDI r19, 13
15.
CP r18, r19
16.
CPI r19, 200
17.
NEG r18
18.
LDI r18, 220
19.
LDI r19, 57
20.
ADD r18, r19
21.
Which instruction(s) will branch if
Z = 1?
22.
Which instruction(s) will branch if
Z = 0?
23.
Which instruction(s) will branch if
C = 1?
24.
Which instruction(s) will branch if
C = 0?
