Digital and Embedded Systems, Bräunl 2015
In an Atmel controller, the memory and accumulator contents are initially:
[$0BCD] = $34, [$0080] = $14, [$0400] = $41, [R16] = $93, [R17] = $34
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 |
ori |
R16, $80 |
|
|
b |
andi |
R16, $08 |
|
|
c |
subi |
R16, $12 |
|
|
d |
lds |
R16, $0400 |
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|
e |
cp |
R16, R17 |
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|
f |
dec |
R16 |
|