Assume the semantics and syntax of various address modes (section 3

Assume the semantics and syntax of various address modes (section 3.2.3 & Figure 3.3 of text.) Given R = 40 and index register X = 35, indicate the operand addressing mode used and the value of the accumulator after the execution of each of the following LDAC (Load Accumulator) instructions. Assume all memory locations, except those containing instructions, have data value equal to thrice the location value: for example, location 12 has the data 3 * 12 = 36.


a) LDAC        25
b) LDAC        @25
c) LDAC        R
d) LDAC        @R
e) LDAC        30(X)