need help with this exercise please!!

Assembly programming: a) Initialize the data memory of the MiniRISC from address 0x70 with the following constants: 1, 3, 5, 7, 9, 11, 13, 15. (2 point) b) Write an assembly routine that reads all 8 values from the data memory, multiplies them with 2 and accumulates the result in the r9 register. So r9 = 2x1 + 2x3 + ... + 2x15. The program should work with any memory content, not only this one. (4 point) C) Give five instructions that affects the N flag of the MiniRISC processor. (1 point)