3 module System(input clk, output wire bubbleshield, output wire [31:0] insn, output wire [31:0] pc);
13 assign bus_req = {7'b0, bus_req_icache};
14 wire bus_ack_icache = bus_ack[`BUS_ICACHE];
16 wire [31:0] bus_addr_icache;
17 wire [31:0] bus_wdata_icache;
21 wire [31:0] bus_rdata_blockram;
22 wire bus_ready_blockram;
24 assign bus_addr = bus_addr_icache;
25 assign bus_rdata = bus_rdata_blockram;
26 assign bus_wdata = bus_wdata_icache;
27 assign bus_rd = bus_rd_icache;
28 assign bus_wr = bus_wr_icache;
29 assign bus_ready = bus_ready_blockram;
31 wire [31:0] icache_rd_addr;
34 wire [31:0] icache_rd_data;
36 BusArbiter busarbiter(.bus_req(bus_req), .bus_ack(bus_ack));
41 .rd_addr(icache_rd_addr), .rd_req(icache_rd_req),
42 .rd_wait(icache_rd_wait), .rd_data(icache_rd_data),
43 .bus_req(bus_req_icache), .bus_ack(bus_ack_icache),
44 .bus_addr(bus_addr_icache), .bus_rdata(bus_rdata),
45 .bus_wdata(bus_wdata_icache), .bus_rd(bus_rd_icache),
46 .bus_wr(bus_wr_icache), .bus_ready(bus_ready));
50 .bus_addr(bus_addr), .bus_rdata(bus_rdata_blockram),
51 .bus_wdata(bus_wdata), .bus_rd(bus_rd), .bus_wr(bus_wr),
52 .bus_ready(bus_ready_blockram));
57 .rd_addr(icache_rd_addr), .rd_req(icache_rd_req),
58 .rd_wait(icache_rd_wait), .rd_data(icache_rd_data),
59 .stall(0 /* XXX */), .jmp(0 /* XXX */), .jmppc(0 /* XXX */),
60 .bubble(bubbleshield), .insn(insn), .pc(pc));