Determine the contents of register A and B in hexadecimal f

Determine the contents of register A and B ( in hexadecimal form) at the end of each assembly language program listed below. ( show your work and box the final result )

LDAA #$0A

STAA $1B

LDAB #$1B

STAB $0A

ADDA #$1B

ADDA $0A

ABA

SUBB #$0A

SUBB $0A

SBA

DECA

INCB

COMB

L1 BRA L1

Solution

Here\'s your answer:

A   251
B   5
D   $fb05
X   $0000
Y   $0000
SP $0000
PC $c010
CC %11011001