Implement DF and IF, and Dep and Exam switches.

1 files changed, 5 insertions, 0 deletions

diff --git a/hdl/top.sv b/hdl/top.sv
index 67e3437..2dd52ab 100644
--- a/hdl/top.sv
+++ b/hdl/top.sv
@@ -73,8 +73,13 @@ assign switch_dep = switch[3][3];
 assign switch_exam = switch[3][4];
 assign switch_cont = switch[3][5];
 assign switch_stop = switch[3][6];
+`ifdef HISTORIC_SWITCH_BEHAVIOUR
+assign switch_sing_step = !switch[3][7];
+assign switch_sing_inst = !switch[3][8];
+`else
 assign switch_sing_step = switch[3][7];
 assign switch_sing_inst = switch[3][8];
+`endif
 
 bit [11:0] led_pc;
 bit [11:0] led_memaddr;