Question

Which of the following ASC instructions are not valid?

1. LDA∗ X
2. LDX Y,4
3. TCAZ
4. SHR
5. ADDM

a) 3 and 4
b) 4 and 5
c) 2 and 3
d) 1 and 2

Answer 1

The valid ASC instructions are LDA* X, LDX Y,4, and ADD M. The invalid ASC instructions are TCAZ and SHR.

Step-by-step explanation:

The valid ASC instructions are:

1. LDA* X
2. LDX Y,4
3. ADD M

The invalid ASC instructions are:

1. TCAZ
2. SHR