[cse141] HW3 clarifications

["Erik Vandekieft" <evandeki@cs.ucsd.edu>]

1.) For problems Chien 6 and Chien 7, if a value is indeterminate (we "don't
care"), you MUST put an "X" for your answer. You cannot just choose 1 or 0
at random. For example, the "value getting written to the register file" is
ALWAYS going to be "X" when the RegWrite control signal is 0.

2.) Also for problems Chien 6 and Chien 7, writing "PC+4" is an acceptable
answer for the "value going into the PC".  But be sure to indicate WHICH PC
we are talking about for the multicycle implementation-- the PC changes
after cycle 1! Actual hexadecimal values are still fine as well.

3.) For problem Chien 9, Please change the last sentence in part (a) to read
"Write MIPS code to find the sum of all the values in the array. Assume that
the values in the array are small enough so that we don't need to worry
about overflowing a register. Put your result in register $v0 but don't
worry about other procedure calling conventions. (this should be easy!)"

If there are lingering questions, please email me and I'll set up an FAQ.

--Erik