Branch Instructions
Branch instructions will be of form:
CC is: Bra (branch always), Brn ( branch never), Bgt, Bge, Blt, Ble, Beq, Bne.
Branch instructions must be on an ALIGNED address. FETCH grabs EUMAX instructions per cycle from IMEM. An aligned address is evenly divisible by EUMAX. Gurantees that only one branch will be in a fetch packet and that it will be in slot 0.
Branch targets must be on an ALIGNED address. Guarantees that PC will always be aligned.