E1.16 Write an instruction sequence to copy 4 bytes starting from $1000 to $1100-$1103. E1.17 Write an instruction sequence to subtract the contents of accumulator B from the 16-bit word at $1000~$1001 and store the difference at $1100-$1101. Treat the value stored in B as a signed value. E1.18 Write an instruction sequence to swap the 16-bit word stored at $1000-$1001 with the 16-bit word stored at $1100~$1101. E1.19 Give an instruction that can store the contents of accumulator D at the memory location with an address larger than the content of X by 8. E1.20 Give an instruction that can store the contents of index register Y at the memory location with an address smaller than the contents of X by 10. E1.16 Write an instruction sequence to copy 4 bytes starting from $1000 to $1100-$1103. E1.17 Write an instruction sequence to subtract the contents of accumulator B from the 16-bit word at $1000~$1001 and store the difference at $1100-$1101. Treat the value stored in B as a signed value. E1.18 Write an instruction sequence to swap the 16-bit word stored at $1000-$1001 with the 16-bit word stored at $1100~$1101. E1.19 Give an instruction that can store the contents of accumulator D at the memory location with an address larger than the content of X by 8. E1.20 Give an instruction that can store the contents of index register Y at the memory location with an address smaller than the contents of X by 10