Merge branch 'master' of nyus.joshuawise.com:/git/firearm
[firearm.git] / Terminal.v
CommitLineData
1d97a095
JW
1module Terminal(
2 input clk,
3
4 input cp_req,
5 input [31:0] cp_insn,
6 output reg cp_ack,
7 output reg cp_busy,
8 input cp_rnw,
9 output reg [31:0] cp_read = 0,
10 input [31:0] cp_write);
11
12 /* Terminal pretends to be cp5. */
13 reg towrite = 0;
14 reg [7:0] data = 0;
15
16 always @(*)
17 begin
18 towrite = 0;
19 data = 8'hxx;
20 cp_ack = 0;
21 cp_busy = 0;
22 if (cp_req && (cp_rnw == 0) && (cp_insn[27:24] == 4'b1110) && (cp_insn[19:16] == 4'b0000) && (cp_insn[11:8] == 4'h5))
23 begin
24 towrite = 1;
25 data = cp_write[7:0];
26 cp_ack = 1;
27 end
28 end
29
30 always @(posedge clk)
31 if (towrite)
32 $c("{extern void term_output(unsigned char d); term_output(",data,");}");
33endmodule
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