Digital and Embedded Systems, Bräunl 2015
In an Atmel controller, the memory and accumulator contents are initially:
[$0400] = $21, [$0401] = $23, [$0402] = $13, [R16] = $8A, [R17] = $21, [R18] = $81
What is the hex value in R16 after executing each of the following instructions separately?
(Always using the the same memory and accumulator contents as shown above)
|
a |
dec |
R16 |
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|
b |
subi |
R16, $60 |
|
|
c |
ldi |
R16, $96 |
|
|
d |
cpi |
R16, $41 |
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|
e |
add |
R16, R17 |
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f |
eor |
R16, R18 |
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