Hex 8 commands

Question 1

LDAC /LDBC

Answer 1

areg/breg <- oreg (loads some constant)

Question 2

LDAP

Answer 2

areg <- pc+oreg

Question 3

LDAM/LDBM

Answer 3

areg/breg <- mem[oreg]

Question 4

STAM

Answer 4

mem[oreg] <- areg

Question 5

LDAI/LDDBI

Answer 5

areg/breg <- mem[areg/breg+oreg]

Question 6

STAI

Answer 6

mem[breg+oreg] <- areg

Question 7

BRN

Answer 7

branch if negative

Question 8

BRB vs BR

Answer 8

branch absolute vs branch relative unconditional
branch absolute takes you to memory address oreg
branch relative uncondition takes you ot memory address pc+oreg