Question

Array A Contains Three 8-Bit Numbers. Complete Each Of The Following Instructions By Writing The Second Operand So That The Final Value In R1 Is The Sum Of The Elements Of Array A. Use Only The Auto-Increment Addressing Mode For Memory Addresses. Do Not Insert Spaces After Commas. LDR RO,=A LDRB

Answer 1

To find the sum of the elements of Array A, use the LDRB instruction with auto-increment addressing mode for memory addresses.

Step-by-step explanation:

To find the sum of the elements of Array A, you can use the LDRB instruction with auto-increment addressing mode for memory addresses. The LDR instruction is used to load a value into a register from memory. In this case, the first operand of LDR is RO, which is the destination register. The second operand should be the memory address where the values of Array A are stored.

So, to complete the instruction, you need to determine the memory address of Array A. Once you have that, you can use the auto-increment addressing mode to automatically increment the memory address after each load.

For example, if the memory address of Array A is 0x100, you can write the instruction as: LDRB RO,[0x100],#1. This loads the first element of Array A into register RO and increments the memory address by 1. You need to repeat this instruction three times, once for each element of Array A.