Question
execute the following instructions by hand, then find the final contents of ACCA, X, and the contents of location $C190. Algorithm Description The idea here
execute the following instructions by hand, then find the final contents of ACCA, X, and the contents of location $C190. Algorithm Description The idea here is to compare the contents each time with the element found, add 1 to the counter (CTR) location.
count.asm
MEMORY START EQU $C160
C160 44 END EQU $C165
C161 2F CTR EQU $C190
ORG $C000
CLR CTR
C162 44 LDX #START ;point to the
C163 11 LDAA O,X
C164 44 CMPA #44 ;element found
C165 12 BNE SKIP ;no, branch
C166 44 INC CTR ;yes, increment
C167 3B INX
C168 44 CPX #END ;end of block
C169 8A BNE AGN ;no, try again
C16A 44 SWI ;yes, stop
END
X=
A=
C190 3F
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