diff options
Diffstat (limited to 'design/stack_machine.v')
| -rw-r--r-- | design/stack_machine.v | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/design/stack_machine.v b/design/stack_machine.v index 4313713..a6b2765 100644 --- a/design/stack_machine.v +++ b/design/stack_machine.v @@ -212,6 +212,10 @@ module stack_machine_new assign instr_udiv = !set_im && !use_im && stack_shrinks_by_1 && instruction[11:0] == 12'd2; + wire instr_mul; + assign instr_mul = !set_im && !use_im && stack_shrinks_by_1 && + instruction[11:0] == 12'd3; + reg halt; /* Set once a halt instruction is encountered */ assign finished = halt; @@ -505,6 +509,9 @@ module stack_machine_new if (instr_udiv && arithmetic_uncompleted) r1 <= div_quotient; + + if (instr_mul && arithmetic_uncompleted) + r1 <= r0 * r1; end // case: STEP_EXECUTING endcase // case (step) end // else: !if(RST_I) |