Answer to Question #151616 in Assembler for Raziya

Question

Suppose, DS= 1015 H, BX= 1015 H, DI= 15 H, Table= 15H. Then, calculate the
physical address of the source for the following instruction in real mode:
MOV AX, Table[BX+ DI].

Answer 1

CPU makes a calculation of physical address by multiplying the segment register by 10h and adding disp to it:

DS*10h + Table + BX + DI

10150h + 0015h + 1015h + 0015h = 1118Fh