15, please make it clear in HCS12

$1000 and store the difference at $1005. E1.15 Write an instruction sequence to add the contents of accumulator B to the 16-bit word stored at memory locations $ 1000 and $1001. Treat the value stored in B as a signed number. E1.16 Write an instruction sequence to copy 4 bytes starting from $1000 to $1100-$1103. 11 17 Writo an instruction sequence to cubtract the contents of accumulator B from the 16 bit $1000 and store the difference at $1005. E1.15 Write an instruction sequence to add the contents of accumulator B to the 16-bit word stored at memory locations $ 1000 and $1001. Treat the value stored in B as a signed number. E1.16 Write an instruction sequence to copy 4 bytes starting from $1000 to $1100-$1103. 11 17 Writo an instruction sequence to cubtract the contents of accumulator B from the 16 bit