| /* const/4 vA, #+B */ | |
| ext a2, rINST, 8, 4 # a2 <- A | |
| seh a0, rINST # sign extend B in rINST | |
| FETCH_ADVANCE_INST 1 # advance rPC, load rINST | |
| sra a0, a0, 12 # shift B into its final position | |
| GET_INST_OPCODE v0 # extract opcode from rINST | |
| SET_VREG a0, a2 # vA <- +B | |
| GOTO_OPCODE v0 # jump to next instruction |