Changeset 95 for trunk

Timestamp:

Mar 12, 2010, 11:52:01 AM (15 years ago)

Author:

demin

Message:

remove idle state

File:

• trunk/MultiChannelUSB/histogram.v (modified) (5 diffs)

trunk/MultiChannelUSB/histogram.v

@@ -2 +2 @@
         (
                 input   wire                    clock, frame, reset,
-                
-                input   wire    [40:0]  cfg_data,
                 
                 input   wire                    hst_good,
@@ -90 +88 @@
                         int_addr_reg <= 12'd0;
                         int_data_reg <= 32'd0;
-                        int_case_reg <= 4'b1;
+                        int_case_reg <= 4'b0;
                         bus_addr_reg <= 13'd0;
                         bus_miso_reg <= 16'd0;
@@ -137 +135 @@
 
                 case (int_case_reg)
+                                                
                         0:
                         begin
-                                int_wren_next = 1'b0;
-                                int_addr_next = 12'd0;
-                                int_data_next = 32'd0;
-                        end
-                                                
-                        1:
-                        begin
                                 // write zeros
+                                int_addr_next = int_addr_reg + 12'd1;
                                 if (&int_addr_reg)
                                 begin
                                         int_wren_next = 1'b0;
-                                        int_case_next = 4'd2;
-                                end
-                                else
-                                begin
-                                        int_addr_next = int_addr_reg + 12'd1;
+                                        int_case_next = 4'd1;
                                 end
                         end     
 
-                        2:
+                        1:
                         begin
                                 int_wren_next = 1'b0;
+/*
                                 if (&int_data_reg)
                                 begin
@@ -166 +156 @@
                                 end
                                 else if (frame & hst_good)
+*/
+                                if (frame & hst_good)
                                 begin
                                         int_addr_next = hst_data;
-                                        int_case_next = 4'd3;
+                                        int_case_next = 4'd2;
                                 end
+                        end
+
+                        2:
+                        begin
+                                int_case_next = 4'd3;
                         end
 
@@ -179 +176 @@
                         4:
                         begin
-                                int_case_next = 4'd5;
-                        end
-
-                        5:
-                        begin
-                                int_wren_next = 1'b1;
-                                int_data_next = q_a_wire + 32'd1;
-                                int_case_next = 4'd2;
+                                int_case_next = 4'd1;
+                                if (~&q_a_wire)
+                                begin
+                                        int_wren_next = 1'b1;
+                                        int_data_next = q_a_wire + 32'd1;
+                                end
                         end