Question

For given 10 decimal numbers: 12, 69, 40, 14, 55, 67, 47, 78, 90, and 23, program assembly codes for HCS12 to tell how many of them are even number.

Answer 1

If you want to check whether a given number is odd or even, a simple test would be to check the least significant bit of the number
In the program below we check if number f1 is even or odd.
We load the number and check if last bit is 1, if yes then number is odd

To know whether it is even or odd we do the folloqing thing:

If the given number is even, store a “$00” into $1501 and store a “$11” into $1501 for an odd number.

org $1000
data dc.w $F1 ;data to be tested say F1
BRCLR $100,$01,odd ; jump to odd if last bit is 1
LDAA #$00
STAA $1500

end: END

odd: LDAA #$11
STAA $ 1501
BRA end