What registers are included in the "Programmer's Model" for this chip and which $5$ did I ask you to remember and forget the rest? What register is not in the programmer's Model, but is included in the $12$ registers of the Core section of each of the $32$ memory banks?

How many bits in the BSR are actually used?

List the steps required to change the Program Counter without using a branch or jump instruction.

Remember it involves a pre$-$load in one register before a write into another. Also remember that the program counter $(PC)$ is $15$ bits, because in this family of micros that is the maximum program memorv.