diff options
Diffstat (limited to 'rtl/core/control/writeback.sv')
| -rw-r--r-- | rtl/core/control/writeback.sv | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/rtl/core/control/writeback.sv b/rtl/core/control/writeback.sv index 2ba0845..021d494 100644 --- a/rtl/core/control/writeback.sv +++ b/rtl/core/control/writeback.sv @@ -24,6 +24,8 @@ module core_control_writeback final_rd, output logic writeback, final_writeback, + update_flags, + final_update_flags, output word wr_value ); @@ -85,6 +87,23 @@ module core_control_writeback default: wr_value <= q_alu; endcase + update_flags <= 0; + unique0 case(next_cycle) + ISSUE: + update_flags <= final_update_flags; + + EXCEPTION: + final_update_flags <= 0; + endcase + + unique0 case(next_cycle) + ISSUE: + final_update_flags <= issue && dec.update_flags; + + EXCEPTION: + final_update_flags <= 0; + endcase + unique0 case(next_cycle) TRANSFER: if(mem_ready) @@ -101,9 +120,14 @@ module core_control_writeback initial begin rd = 0; final_rd = 0; - wr_value = 0; + writeback = 0; final_writeback = 0; + + update_flags = 0; + final_update_flags = 0; + + wr_value = 0; end endmodule |