Make it work

[clump.git] / chip.v

diff --git a/chip.v b/chip.v
index 1ff0d50022a41d9918f528bffdb736e5379e5a9f..12006404f1da684b5c77e5632555219c29bffb89 100644 (file)
--- a/chip.v
+++ b/chip.v
@@ -18,7 +18,7 @@
 `define DIRECTION_W  3'd6
 `define DIRECTION_NW 3'd7
 
-module chip(input clk, input [2:0] op, input [15:0] I, input io_pin, input CS, output reg [15:0] mem_in, input [15:0] mem_out, output reg mem_write, output reg [3:0] led_out = 0);
+module chip(input clk, input [2:0] op, input [15:0] I, output reg [15:0] mem_in, input [15:0] mem_out, output reg mem_write, output reg [3:0] led_out = 0);
 
    // parity is unimplemented
 
@@ -37,19 +37,6 @@ module chip(input clk, input [2:0] op, input [15:0] I, input io_pin, input CS, o
    wire          edge_ = I[7];
    wire [3:0] cube = I[11:8];
 
-   // OP_ROUTE
-   wire [5:0] cycle = I[5:0];
-   wire [1:0] check = I[7:6];
-   wire [3:0] xor_  = I[11:8];
-   wire [2:0] snarf = I[14:12];
-   wire          odd   = I[15];
-
-   // OP_RUG
-   wire          rw = I[0];
-   wire          ac = I[1];
-   wire          news = I[2];
-   wire [4:0] reg_ = I[8:4];
-
    // OP_LED
    wire          mode   = I[4];
    wire [1:0] offset = I[1:0];
@@ -65,14 +52,13 @@ module chip(input clk, input [2:0] op, input [15:0] I, input io_pin, input CS, o
    reg [7:0]  alu_sum = 0;
    reg [7:0]  alu_carry = 0;
    reg [15:0] cube_in;
-   reg                   io;
 
    // these are not really regs
 
    reg [15:0]  alu_sum_out;
    reg [15:0]  alu_carry_out;
 
-   reg [2:0]  alu_index [15:0];
+   reg [2:0]   alu_index [15:0];
 
    reg [15:0]  idx;
 
@@ -114,7 +100,7 @@ module chip(input clk, input [2:0] op, input [15:0] I, input io_pin, input CS, o
    reg [15:0]  flag_or_news;
    reg [15:0]  news_out;
 
-   news newspaper (.news_in(latest_news), .direction(flags_addr[1:0]), .news_out(news_out));
+   news newspaper (.news_in(latest_news), .direction(flags_addr[2:0]), .news_out(news_out));
 
    assign flag_or_news = flags_addr[3] ? news_out : flags_out;
 
@@ -135,7 +121,6 @@ module chip(input clk, input [2:0] op, input [15:0] I, input io_pin, input CS, o
                         F <= flag_or_news;
                         A <= mem_out;
                         C <= mem_out;
-                        io <= io_pin;
                         if (bsel)
                           B <= cube_in;
                  end