Computer Systems
Question 1 (Assembly code)
Consider the following formula: (r1 ×(M1 +r2))−(r2 ×M2). Here r1 and r2 are
two registers, and M1 and M2 represent the contents of two memory addresses.
(a) Write an assembly program for computing the result of the formula into
register r3. Try to make the programme as short as possible.
(b) Consider the instructions in the ISA in the appendix. Determine for each
instruction its type, i.e., whether it does one or a combination of the
following: (1) data transfer, (2) data processing, (3) control.
