Digital and Embedded Systems, Bräunl 2015
In an Atmel controller, the memory and accumulator contents are initially:
[$0400] = $16, [$0401] = $32, [$0402] = $02, [R16] = $A5, [R17] = $44, [R18] = $16
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)
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a. |
lds |
R16, $0400 |
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b. |
add |
R16, R17 |
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c. |
andi |
R16, $80 |
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d |
or |
R16, R18 |
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e. |
inc |
R16 |
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f. |
subi |
R16, 2 |
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