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//////////////////////////////////////////////////////////////////////
////                                                              ////
////  OR1K test application for XESS XSV board, Top Level         ////
////                                                              ////
////  This file is part of the OR1K test application              ////
////  http://www.opencores.org/cores/or1k/                        ////
////                                                              ////
////  Description                                                 ////
////  Top level instantiating all the blocks.                     ////
////                                                              ////
////  To Do:                                                      ////
////   - nothing really                                           ////
////                                                              ////
////  Author(s):                                                  ////
////      - Damjan Lampret, lampret@opencores.org                 ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2001 Authors                                   ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source is distributed in the hope that it will be       ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
//// PURPOSE.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
//
 
`include "xfpga_defines.v"
 
module xsv_fpga_top (
 
	//
	// Global signals
	//
	clk, rstn,
 
	//
	// Flash chip
	//
	flash_rstn, flash_cen, flash_oen, flash_wen,
	flash_rdy, flash_d, flash_a,
 
	//
	// SRAM right bank
	//
	sram_r_cen, sram_r_oen, sram_r0_wen,
	sram_r1_wen, sram_r_d, sram_r_a,
 
	//
	// SRAM left bank
	//
	sram_l_cen, sram_l_oen, sram_l0_wen,
	sram_l1_wen, sram_l_d, sram_l_a,
 
`ifdef APP_VGA_RAMDAC
 
	//
	// VGA RAMDAC
	//
	ramdac_pixclk, ramdac_hsyncn, ramdac_vsync, ramdac_blank,
	ramdac_p, ramdac_rdn, ramdac_wrn, ramdac_rs, ramdac_d,
`else
	//
	// VGA Direct
	//
	vga_blank, vga_pclk, vga_hsyncn, vga_vsyncn,
	vga_r, vga_g, vga_b,
 
`endif
 
	//
	// Stereo Codec
	//
	codec_mclk, codec_lrclk, codec_sclk,
	codec_sdin, codec_sdout,
 
	//
	// Ethernet
	//
	eth_col, eth_crs, eth_trste, eth_tx_clk,
	eth_tx_en, eth_tx_er, eth_txd, eth_rx_clk,
	eth_rx_dv, eth_rx_er, eth_rxd, eth_fds_mdint,
	eth_mdc, eth_mdio,
 
	//
	// Switches
	//
	sw,
 
	//
	// PS/2 keyboard
	//
	ps2_clk, ps2_data,
 
	//
	// CPLD
	//
	tdmfrm, tdmrx, tdmtx
);
 
//
// I/O Ports
//
 
//
// Global
//
input			clk;
input			rstn;
 
//
// Flash
//
output 			flash_rstn;
output 			flash_cen;
output 			flash_oen;
output 			flash_wen;
input 			flash_rdy;
inout	[7:0]		flash_d;
inout	[20:0]		flash_a;
 
//
// SRAM Right
//
output			sram_r_cen;
output			sram_r1_wen;
output			sram_r0_wen;
output			sram_r_oen;
output	[18:0]		sram_r_a;
inout	[15:0]		sram_r_d;
 
//
// SRAM Left
//
output			sram_l_cen;
output			sram_l0_wen;
output			sram_l1_wen;
output			sram_l_oen;
output	[18:0]		sram_l_a;
inout	[15:0]		sram_l_d;
 
`ifdef APP_VGA_RAMDAC
 
//
// VGA RAMDAC
//
output			ramdac_pixclk;
output			ramdac_hsyncn;
output			ramdac_vsync;
output			ramdac_blank;
output	[7:0]		ramdac_p;
output			ramdac_rdn;
output			ramdac_wrn;
output	[2:0]		ramdac_rs;
inout	[7:0]		ramdac_d;
 
`else
 
//
// VGA Direct
//
output			vga_pclk;
output			vga_blank;
output			vga_hsyncn;
output			vga_vsyncn;
output	[3:0]		vga_r;
output	[3:0]		vga_g;
output	[3:0]		vga_b;
 
`endif
 
//
// Stereo Codec
//
output			codec_mclk;
output			codec_lrclk;
output			codec_sclk;
output			codec_sdin;
input			codec_sdout;
 
//
// Ethernet
//
output			eth_tx_er;
input			eth_tx_clk;
output			eth_tx_en;
output	[3:0]		eth_txd;
input			eth_rx_er;
input			eth_rx_clk;
input			eth_rx_dv;
input	[3:0]		eth_rxd;
input			eth_col;
input			eth_crs;
output			eth_trste;
input			eth_fds_mdint;
inout			eth_mdio;
output			eth_mdc;
 
//
// Switches
//
input	[2:1]		sw;
 
//
// PS/2 keyboard
//
inout			ps2_clk;
inout			ps2_data;
 
//
// CPLD TDM
//
input			tdmfrm;
input			tdmrx;
output			tdmtx;
 
 
//
// Internal wires
//
 
//
// VGA core slave i/f wires
//
wire 	[31:0]		wb_vs_adr_i;
wire 	[31:0]		wb_vs_dat_i;
wire 	[31:0]		wb_vs_dat_o;
wire 	[3:0]		wb_vs_sel_i;
wire 			wb_vs_we_i;
wire 			wb_vs_stb_i;
wire 			wb_vs_cyc_i;
wire 			wb_vs_ack_o;
wire 			wb_vs_err_o;
 
//
// VGA core master i/f wires
//
wire 	[31:0]		wb_vm_adr_o;
wire 	[31:0] 		wb_vm_dat_i;
wire 	[3:0]		wb_vm_sel_o;
wire			wb_vm_we_o;
wire 			wb_vm_stb_o;
wire			wb_vm_cyc_o;
wire			wb_vm_cab_o;
wire			wb_vm_ack_i;
wire			wb_vm_err_i;
 
//
// VGA CRT wires
//
wire	[4:0]		vga_r_int;
wire	[5:0]		vga_g_int;
wire	[4:0]		vga_b_int;
wire			crt_hsync;
wire			crt_vsync;
 
//
// Debug core master i/f wires
//
wire 	[31:0]		wb_dm_adr_o;
wire 	[31:0] 		wb_dm_dat_i;
wire 	[31:0] 		wb_dm_dat_o;
wire 	[3:0]		wb_dm_sel_o;
wire			wb_dm_we_o;
wire 			wb_dm_stb_o;
wire			wb_dm_cyc_o;
wire			wb_dm_cab_o;
wire			wb_dm_ack_i;
wire			wb_dm_err_i;
 
//
// Debug <-> RISC wires
//
wire	[3:0]		dbg_lss;
wire	[1:0]		dbg_is;
wire	[10:0]		dbg_wp;
wire			dbg_bp;
wire	[31:0]		dbg_dat_dbg;
wire	[31:0]		dbg_dat_risc;
wire	[31:0]		dbg_adr;
wire			dbg_ewt;
wire			dbg_stall;
wire	[2:0]		dbg_op;
 
//
// RISC instruction master i/f wires
//
wire 	[31:0]		wb_rim_adr_o;
wire			wb_rim_cyc_o;
wire 	[31:0]		wb_rim_dat_i;
wire 	[31:0]		wb_rim_dat_o;
wire 	[3:0]		wb_rim_sel_o;
wire			wb_rim_ack_i;
wire			wb_rim_err_i;
wire			wb_rim_rty_i;
wire			wb_rim_we_o;
wire			wb_rim_stb_o;
wire			wb_rim_cab_o;
wire	[31:0]		wb_rif_adr;
reg			prefix_flash;
 
//
// RISC data master i/f wires
//
wire 	[31:0]		wb_rdm_adr_o;
wire			wb_rdm_cyc_o;
wire 	[31:0]		wb_rdm_dat_i;
wire 	[31:0]		wb_rdm_dat_o;
wire 	[3:0]		wb_rdm_sel_o;
wire			wb_rdm_ack_i;
wire			wb_rdm_err_i;
wire			wb_rdm_rty_i;
wire			wb_rdm_we_o;
wire			wb_rdm_stb_o;
wire			wb_rdm_cab_o;
 
 
//
// RISC misc
//
wire	[19:0]		pic_ints;
 
//
// SRAM controller slave i/f wires
//
wire 	[31:0]		wb_ss_dat_i;
wire 	[31:0]		wb_ss_dat_o;
wire 	[31:0]		wb_ss_adr_i;
wire 	[3:0]		wb_ss_sel_i;
wire			wb_ss_we_i;
wire			wb_ss_cyc_i;
wire			wb_ss_stb_i;
wire			wb_ss_ack_o;
wire			wb_ss_err_o;
 
//
// SRAM external wires
//
wire	[15:0]		sram_r_d_o;
wire	[15:0]		sram_l_d_o;
wire			sram_d_oe;
 
//
// Flash controller slave i/f wires
//
wire 	[31:0]		wb_fs_dat_i;
wire 	[31:0]		wb_fs_dat_o;
wire 	[31:0]		wb_fs_adr_i;
wire 	[3:0]		wb_fs_sel_i;
wire			wb_fs_we_i;
wire			wb_fs_cyc_i;
wire			wb_fs_stb_i;
wire			wb_fs_ack_o;
wire			wb_fs_err_o;
 
//
// Audio core slave i/f wires
//
wire 	[31:0]		wb_as_dat_i;
wire 	[31:0]		wb_as_dat_o;
wire 	[31:0]		wb_as_adr_i;
wire 	[3:0]		wb_as_sel_i;
wire			wb_as_we_i;
wire			wb_as_cyc_i;
wire			wb_as_stb_i;
wire			wb_as_ack_o;
wire			wb_as_err_o;
 
//
// Audio core master i/f wires
//
wire 	[31:0]		wb_am_dat_o;
wire 	[31:0]		wb_am_dat_i;
wire 	[31:0]		wb_am_adr_o;
wire 	[3:0]		wb_am_sel_o;
wire			wb_am_we_o;
wire			wb_am_cyc_o;
wire			wb_am_stb_o;
wire			wb_am_cab_o;
wire			wb_am_ack_i;
wire			wb_am_err_i;
 
//
// PS/2 core slave i/f wires
//
wire 	[31:0]		wb_ps_dat_i;
wire 	[31:0]		wb_ps_dat_o;
wire 	[31:0]		wb_ps_adr_i;
wire 	[3:0]		wb_ps_sel_i;
wire			wb_ps_we_i;
wire			wb_ps_cyc_i;
wire			wb_ps_stb_i;
wire			wb_ps_ack_o;
wire			wb_ps_err_o;
 
//
// PS/2 external i/f wires
//
wire			ps2_clk_o;
wire			ps2_data_o;
wire			ps2_clk_oe;
wire			ps2_data_oe;
 
//
// Ethernet core master i/f wires
//
wire 	[31:0]		wb_em_adr_o;
wire 	[31:0] 		wb_em_dat_i;
wire 	[31:0] 		wb_em_dat_o;
wire 	[3:0]		wb_em_sel_o;
wire			wb_em_we_o;
wire 			wb_em_stb_o;
wire			wb_em_cyc_o;
wire			wb_em_cab_o;
wire			wb_em_ack_i;
wire			wb_em_err_i;
 
//
// Ethernet core slave i/f wires
//
wire	[31:0]		wb_es_dat_i;
wire	[31:0]		wb_es_dat_o;
wire	[31:0]		wb_es_adr_i;
wire	[3:0]		wb_es_sel_i;
wire			wb_es_we_i;
wire			wb_es_cyc_i;
wire			wb_es_stb_i;
wire			wb_es_ack_o;
wire			wb_es_err_o;
 
//
// Ethernet external i/f wires
//
wire			eth_mdo;
wire			eth_mdoen;
 
//
// UART16550 core slave i/f wires
//
wire	[31:0]		wb_us_dat_i;
wire	[31:0]		wb_us_dat_o;
wire	[31:0]		wb_us_adr_i;
wire	[3:0]		wb_us_sel_i;
wire			wb_us_we_i;
wire			wb_us_cyc_i;
wire			wb_us_stb_i;
wire			wb_us_ack_o;
wire			wb_us_err_o;
 
//
// UART external i/f wires
//
wire			uart_stx;
wire			uart_srx;
 
//
// JTAG wires
//
wire			jtag_tdi;
wire			jtag_tms;
wire			jtag_tck;
wire			jtag_trst;
wire			jtag_tdo;
 
//
// CPLD TDM wires
//
wire	[2:0]		tdm_out_unused;
 
//
// Reset debounce
//
reg			rst_r;
reg			wb_rst;
 
//
// Global clock
//
wire			wb_clk;
 
//
// Reset debounce
//
always @(posedge wb_clk or negedge rstn)
	if (~rstn)
		rst_r <= 1'b1;
	else
		rst_r <= #1 1'b0;
 
//
// Reset debounce
//
always @(posedge wb_clk)
	wb_rst <= #1 rst_r;
 
//
// Some Xilinx P&R tools need this
//
`ifdef TARGET_VIRTEX
IBUFG IBUFG1 (
	.O	( wb_clk ),
	.I	( clk )
);
`else
assign wb_clk = clk;
`endif
 
//
// SRAM tri-state data
//
assign sram_r_d = sram_d_oe ? sram_r_d_o : 16'hzzzz;
assign sram_l_d = sram_d_oe ? sram_l_d_o : 16'hzzzz;
 
//
// Ethernet tri-state
//
assign eth_mdio = eth_mdoen ? 1'bz : eth_mdo;
assign eth_trste = 1'b0;
 
//
// PS/2 Keyboard tri-state
//
assign ps2_clk = ps2_clk_oe ? ps2_clk_o : 1'bz;
assign ps2_data = ps2_data_oe ? ps2_data_o : 1'bz;
 
//
// Unused interrupts
//
assign pic_ints[`APP_INT_RES1] = 'b0;
assign pic_ints[`APP_INT_RES2] = 'b0;
assign pic_ints[`APP_INT_RES3] = 'b0;
 
//
// Unused WISHBONE signals
//
assign wb_us_err_o = 1'b0;
assign wb_ps_err_o = 1'b0;
assign wb_em_cab_o = 1'b0;
assign wb_am_cab_o = 1'b0;
 
//
// RISC Instruction address for Flash
//
// Until first access to real Flash area,
// it is always prefixed with Flash area prefix.
// This way we have flash at base address 0x0
// during reset vector execution (boot). First
// access to real Flash area will automatically
// move SRAM to 0x0.
//
always @(posedge wb_clk or negedge rstn)
	if (!rstn)
		prefix_flash <= #1 1'b1;
	else if (wb_rim_cyc_o &&
		(wb_rim_adr_o[31:32-`APP_ADDR_DEC_W] == `APP_ADDR_FLASH))
		prefix_flash <= #1 1'b0;
assign wb_rif_adr = prefix_flash ? {`APP_ADDR_FLASH, wb_rim_adr_o[31-`APP_ADDR_DEC_W:0]}
			: wb_rim_adr_o;
 
//
// Instantiation of the VGA CRT controller
//
ssvga_top ssvga_top (
 
    // Clock and reset
    .wb_clk_i	( wb_clk ), 
    .wb_rst_i	( wb_rst ),
 
    // WISHBONE Master I/F
    .wbm_cyc_o  ( wb_vm_cyc_o ), 
    .wbm_stb_o  ( wb_vm_stb_o ), 
    .wbm_sel_o  ( wb_vm_sel_o ), 
    .wbm_we_o   ( wb_vm_we_o ),
    .wbm_adr_o  ( wb_vm_adr_o ), 
    .wbm_dat_o  ( ), 
    .wbm_cab_o  ( wb_vm_cab_o ),
    .wbm_dat_i  ( wb_vm_dat_i ), 
    .wbm_ack_i  ( wb_vm_ack_i ), 
    .wbm_err_i  ( wb_vm_err_i ), 
    .wbm_rty_i  ( 1'b0 ),
 
    // WISHBONE Slave I/F
    .wbs_cyc_i  ( wb_vs_cyc_i ), 
    .wbs_stb_i  ( wb_vs_stb_i ), 
    .wbs_sel_i  ( wb_vs_sel_i ), 
    .wbs_we_i   ( wb_vs_we_i ),
    .wbs_adr_i  ( wb_vs_adr_i ), 
    .wbs_dat_i  ( wb_vs_dat_i ), 
    .wbs_cab_i  ( 1'b0 ),
    .wbs_dat_o  ( wb_vs_dat_o ), 
    .wbs_ack_o  ( wb_vs_ack_o ), 
    .wbs_err_o  ( wb_vs_err_o ), 
    .wbs_rty_o  ( ),
 
    // Signals to VGA display
    .pad_hsync_o ( crt_hsync ), 
    .pad_vsync_o ( crt_vsync ), 
    .pad_rgb_o   ( {vga_r_int, vga_g_int, vga_b_int} ),
    .led_o	 ( )
);
 
CRTC_IOB crt_out_reg (
    .reset_in	( wb_rst ),
    .clk_in	( wb_clk ),
    .hsync_in	( crt_hsync ),
    .vsync_in	( crt_vsync ),
    .rgb_in	( {vga_r_int[4:1], vga_g_int[5:2], vga_b_int[4:1]} ),
    .hsync_out	( vga_hsyncn ),
    .vsync_out	( vga_vsyncn ),
    .rgb_out	( {vga_r, vga_g, vga_b} )
);
 
 
//
// Instantiation of the Audio controller.
//
// This controller connects to AK4520A Codec chip.
//
audio_top audio_top (
 
	// WISHBONE common
	.wb_clk_i ( wb_clk ),
	.wb_rst_i ( wb_rst ),
 
	// WISHBONE slave
	.wb_dat_i ( wb_as_dat_i ),
	.wb_dat_o ( wb_as_dat_o ),
	.wb_adr_i ( wb_as_adr_i ),
	.wb_sel_i ( wb_as_sel_i ),
	.wb_we_i  ( wb_as_we_i  ),
	.wb_cyc_i ( wb_as_cyc_i ),
	.wb_stb_i ( wb_as_stb_i ),
	.wb_ack_o ( wb_as_ack_o ),
	.wb_err_o ( wb_as_err_o ),
 
	// WISHBONE master
	.m_wb_dat_o ( wb_am_dat_o ),
	.m_wb_dat_i ( wb_am_dat_i ),
	.m_wb_adr_o ( wb_am_adr_o ),
	.m_wb_sel_o ( wb_am_sel_o ),
	.m_wb_we_o  ( wb_am_we_o  ),
	.m_wb_cyc_o ( wb_am_cyc_o ),
	.m_wb_stb_o ( wb_am_stb_o ),
	.m_wb_ack_i ( wb_am_ack_i ),
	.m_wb_err_i ( wb_am_err_i ),
 
	// AK4520A CODEC interface
	.mclk	  ( codec_mclk ),
	.lrclk	  ( codec_lrclk ),
	.sclk	  ( codec_sclk ),
	.sdin	  ( codec_sdin ),
	.sdout	  ( codec_sdout )
);
 
//
// Instantiation of the development i/f model
//
// Used only for simulations.
//
`ifdef DBG_IF_MODEL
dbg_if_model dbg_if_model  (
 
	// JTAG pins
	.tms_pad_i	( jtag_tms ),
	.tck_pad_i	( jtag_tck ),
	.trst_pad_i	( jtag_trst ),
	.tdi_pad_i	( jtag_tdi ),
	.tdo_pad_o	( jtag_tdo ), 
 
	// Boundary Scan signals
	.capture_dr_o	( ), 
	.shift_dr_o	( ), 
	.update_dr_o	( ), 
	.extest_selected_o ( ), 
	.bs_chain_i	( 1'b0 ),
 
	// RISC signals
	.risc_clk_i	( wb_clk ),
	.risc_data_i	( dbg_dat_risc ),
	.risc_data_o	( dbg_dat_dbg ),
	.risc_addr_o	( dbg_adr ),
	.wp_i		( dbg_wp ),
	.bp_i		( dbg_bp ),
	.opselect_o	( dbg_op ),
	.lsstatus_i	( dbg_lss ),
	.istatus_i	( dbg_is ),
	.risc_stall_o	( dbg_stall ),
	.reset_o	( ),
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE master interface
	.wb_adr_o	( wb_dm_adr_o ),
	.wb_dat_i	( wb_dm_dat_i ),
	.wb_dat_o	( wb_dm_dat_o ),
	.wb_sel_o	( wb_dm_sel_o ),
	.wb_we_o	( wb_dm_we_o  ),
	.wb_stb_o	( wb_dm_stb_o ),
	.wb_cyc_o	( wb_dm_cyc_o ),
	.wb_cab_o	( wb_dm_cab_o ),
	.wb_ack_i	( wb_dm_ack_i ),
	.wb_err_i	( wb_dm_err_i )
);
`else
//
// Instantiation of the development i/f
//
dbg_top dbg_top  (
 
	// JTAG pins
	.tms_pad_i	( jtag_tms ),
	.tck_pad_i	( jtag_tck ),
	.trst_pad_i	( jtag_trst ),
	.tdi_pad_i	( jtag_tdi ),
	.tdo_pad_o	( jtag_tdo ),
	.tdo_padoen_o	( ),
 
	// Boundary Scan signals
	.capture_dr_o	( ), 
	.shift_dr_o	( ), 
	.update_dr_o	( ), 
	.extest_selected_o ( ), 
	.bs_chain_i	( 1'b0 ),
	.bs_chain_o	( ),
 
	// RISC signals
	.risc_clk_i	( wb_clk ),
	.risc_addr_o	( dbg_adr ),
	.risc_data_i	( dbg_dat_risc ),
	.risc_data_o	( dbg_dat_dbg ),
	.wp_i		( dbg_wp ),
	.bp_i		( dbg_bp ),
	.opselect_o	( dbg_op ),
	.lsstatus_i	( dbg_lss ),
	.istatus_i	( dbg_is ),
	.risc_stall_o	( dbg_stall ),
	.reset_o	( ),
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE master interface
	.wb_adr_o	( wb_dm_adr_o ),
	.wb_dat_i	( wb_dm_dat_i ),
	.wb_dat_o	( wb_dm_dat_o ),
	.wb_sel_o	( wb_dm_sel_o ),
	.wb_we_o	( wb_dm_we_o  ),
	.wb_stb_o	( wb_dm_stb_o ),
	.wb_cyc_o	( wb_dm_cyc_o ),
	.wb_cab_o	( wb_dm_cab_o ),
	.wb_ack_i	( wb_dm_ack_i ),
	.wb_err_i	( wb_dm_err_i )
);
`endif
 
//
// Instantiation of the OR1200 RISC
//
or1200_top or1200_top (
 
	// Common
	.rst_i		( wb_rst ),
	.clk_i		( clk ),
`ifdef OR1200_CLMODE_1TO2
	.clmode_i	( 2'b01 ),
`else
`ifdef OR1200_CLMODE_1TO4
	.clmode_i	( 2'b11 ),
`else
	.clmode_i	( 2'b00 ),
`endif
`endif
 
	// WISHBONE Instruction Master
	.iwb_clk_i	( wb_clk ),
	.iwb_rst_i	( wb_rst ),
	.iwb_cyc_o	( wb_rim_cyc_o ),
	.iwb_adr_o	( wb_rim_adr_o ),
	.iwb_dat_i	( wb_rim_dat_i ),
	.iwb_dat_o	( wb_rim_dat_o ),
	.iwb_sel_o	( wb_rim_sel_o ),
	.iwb_ack_i	( wb_rim_ack_i ),
	.iwb_err_i	( wb_rim_err_i ),
	.iwb_rty_i	( wb_rim_rty_i ),
	.iwb_we_o	( wb_rim_we_o  ),
	.iwb_stb_o	( wb_rim_stb_o ),
	.iwb_cab_o	( wb_rim_cab_o ),
 
	// WISHBONE Data Master
	.dwb_clk_i	( wb_clk ),
	.dwb_rst_i	( wb_rst ),
	.dwb_cyc_o	( wb_rdm_cyc_o ),
	.dwb_adr_o	( wb_rdm_adr_o ),
	.dwb_dat_i	( wb_rdm_dat_i ),
	.dwb_dat_o	( wb_rdm_dat_o ),
	.dwb_sel_o	( wb_rdm_sel_o ),
	.dwb_ack_i	( wb_rdm_ack_i ),
	.dwb_err_i	( wb_rdm_err_i ),
	.dwb_rty_i	( wb_rdm_rty_i ),
	.dwb_we_o	( wb_rdm_we_o  ),
	.dwb_stb_o	( wb_rdm_stb_o ),
	.dwb_cab_o	( wb_rdm_cab_o ),
 
	// Debug
	.dbg_stall_i	( dbg_stall ),
	.dbg_dat_i	( dbg_dat_dbg ),
	.dbg_adr_i	( dbg_adr ),
	.dbg_op_i	( dbg_op ),
	.dbg_ewt_i	( 1'b0 ),
	.dbg_lss_o	( dbg_lss ),
	.dbg_is_o	( dbg_is ),
	.dbg_wp_o	( dbg_wp ),
	.dbg_bp_o	( dbg_bp ),
	.dbg_dat_o	( dbg_dat_risc ),
 
	// Power Management
	.pm_clksd_o	( ),
	.pm_cpustall_i	( 1'b0 ),
	.pm_dc_gate_o	( ),
	.pm_ic_gate_o	( ),
	.pm_dmmu_gate_o	( ),
	.pm_immu_gate_o	( ),
	.pm_tt_gate_o	( ),
	.pm_cpu_gate_o	( ),
	.pm_wakeup_o	( ),
	.pm_lvolt_o	( ),
 
	// Interrupts
	.pic_ints_i	( pic_ints )
);
 
//
// Instantiation of the Flash controller
//
flash_top flash_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE slave
	.wb_dat_i	( wb_fs_dat_i ),
	.wb_dat_o	( wb_fs_dat_o ),
	.wb_adr_i	( wb_fs_adr_i ),
	.wb_sel_i	( wb_fs_sel_i ),
	.wb_we_i	( wb_fs_we_i  ),
	.wb_cyc_i	( wb_fs_cyc_i ),
	.wb_stb_i	( wb_fs_stb_i ),
	.wb_ack_o	( wb_fs_ack_o ),
	.wb_err_o	( wb_fs_err_o ),
 
	// Flash external
	.flash_rstn	( flash_rstn ),
	.cen		( flash_cen ),
	.oen		( flash_oen ),
	.wen		( flash_wen ),
	.rdy		( flash_rdy ),
	.d		( flash_d ),
	.a		( flash_a ),
	.a_oe		( )
);
 
//
// Instantiation of the SRAM controller
//
sram_top sram_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE slave
	.wb_dat_i	( wb_ss_dat_i ),
	.wb_dat_o	( wb_ss_dat_o ),
	.wb_adr_i	( wb_ss_adr_i ),
	.wb_sel_i	( wb_ss_sel_i ),
	.wb_we_i	( wb_ss_we_i  ),
	.wb_cyc_i	( wb_ss_cyc_i ),
	.wb_stb_i	( wb_ss_stb_i ),
	.wb_ack_o	( wb_ss_ack_o ),
	.wb_err_o	( wb_ss_err_o ),
 
	// SRAM external
	.r_cen		( sram_r_cen ),
	.r0_wen		( sram_r0_wen ),
	.r1_wen		( sram_r1_wen ),
	.r_oen		( sram_r_oen ),
	.r_a		( sram_r_a ),
	.r_d_i		( sram_r_d ),
	.r_d_o		( sram_r_d_o ),
	.d_oe		( sram_d_oe ),
	.l_cen		( sram_l_cen ),
	.l0_wen		( sram_l0_wen ),
	.l1_wen		( sram_l1_wen ),
	.l_oen		( sram_l_oen ),
	.l_a		( sram_l_a ),
	.l_d_i		( sram_l_d ),
	.l_d_o		( sram_l_d_o )
);
 
//
// Instantiation of the UART16550
//
uart_top uart_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ), 
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE slave
	.wb_adr_i	( wb_us_adr_i[4:0] ),
	.wb_dat_i	( wb_us_dat_i ),
	.wb_dat_o	( wb_us_dat_o ),
	.wb_we_i	( wb_us_we_i  ),
	.wb_stb_i	( wb_us_stb_i ),
	.wb_cyc_i	( wb_us_cyc_i ),
	.wb_ack_o	( wb_us_ack_o ),
	.wb_sel_i	( wb_us_sel_i ),
 
	// Interrupt request
	.int_o		( pic_ints[`APP_INT_UART] ),
 
	// UART signals
	// serial input/output
	.stx_pad_o	( uart_stx ),
	.srx_pad_i	( uart_srx ),
 
	// modem signals
	.rts_pad_o	( ),
	.cts_pad_i	( 1'b0 ),
	.dtr_pad_o	( ),
	.dsr_pad_i	( 1'b0 ),
	.ri_pad_i	( 1'b0 ),
	.dcd_pad_i	( 1'b0 )
);
 
//
// Instantiation of the Ethernet 10/100 MAC
//
eth_top eth_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE slave
	.wb_dat_i	( wb_es_dat_i ),
	.wb_dat_o	( wb_es_dat_o ),
	.wb_adr_i	( wb_es_adr_i[11:2] ),
	.wb_sel_i	( wb_es_sel_i ),
	.wb_we_i	( wb_es_we_i  ),
	.wb_cyc_i	( wb_es_cyc_i ),
	.wb_stb_i	( wb_es_stb_i ),
	.wb_ack_o	( wb_es_ack_o ),
	.wb_err_o	( wb_es_err_o ), 
 
	// WISHBONE master
	.m_wb_adr_o	( wb_em_adr_o ),
	.m_wb_sel_o	( wb_em_sel_o ),
	.m_wb_we_o	( wb_em_we_o  ), 
	.m_wb_dat_o	( wb_em_dat_o ),
	.m_wb_dat_i	( wb_em_dat_i ),
	.m_wb_cyc_o	( wb_em_cyc_o ), 
	.m_wb_stb_o	( wb_em_stb_o ),
	.m_wb_ack_i	( wb_em_ack_i ),
	.m_wb_err_i	( wb_em_err_i ), 
 
	// TX
	.mtx_clk_pad_i	( eth_tx_clk ),
	.mtxd_pad_o	( eth_txd ),
	.mtxen_pad_o	( eth_tx_en ),
	.mtxerr_pad_o	( eth_tx_er ),
 
	// RX
	.mrx_clk_pad_i	( eth_rx_clk ),
	.mrxd_pad_i	( eth_rxd ),
	.mrxdv_pad_i	( eth_rx_dv ),
	.mrxerr_pad_i	( eth_rx_er ),
	.mcoll_pad_i	( eth_col ),
	.mcrs_pad_i	( eth_crs ),
 
	// MIIM
	.mdc_pad_o	( eth_mdc ),
	.md_pad_i	( eth_mdio ),
	.md_pad_o	( eth_mdo ),
	.md_padoen_o	( eth_mdoen ),
 
	// Interrupt
	.int_o		( pic_ints[`APP_INT_ETH] )
);
 
//
// Instantiation of the PS/2 Keyboard Controller
//
ps2_top ps2_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE slave
	.wb_cyc_i	( wb_ps_cyc_i ),
	.wb_stb_i	( wb_ps_stb_i ),
	.wb_we_i	( wb_ps_we_i  ),
	.wb_sel_i	( wb_ps_sel_i ),
	.wb_adr_i	( wb_ps_adr_i ),
	.wb_dat_i	( wb_ps_dat_i ),
	.wb_dat_o	( wb_ps_dat_o ),
	.wb_ack_o	( wb_ps_ack_o ),
 
	// Interrupt
	.wb_int_o	( pic_ints[`APP_INT_PS2] ),
 
	// PS/2 external wires
	.ps2_kbd_clk_pad_i	( ps2_clk ),
	.ps2_kbd_data_pad_i	( ps2_data ),
	.ps2_kbd_clk_pad_o	( ps2_clk_o ),
	.ps2_kbd_data_pad_o	( ps2_data_o ),
	.ps2_kbd_clk_pad_oe_o	( ps2_clk_oe ),
	.ps2_kbd_data_pad_oe_o	( ps2_data_oe )
);
 
//
// Instantiation of the CPLD TDM
//
// This small block connects XSV FPGA (xfpga_top)
// with the CPLD. CPLD has connectiosn to the
// RS232 PHY chip and to host PC (if you run OR1K
// GDB debugger).
//
tdm_slave_if tdm_slave_if (
	.clk	( wb_clk ),
	.rst	( wb_rst ),
	.tdmfrm	( tdmfrm ),
	.tdmrx	( tdmrx ),
	.tdmtx	( tdmtx ),
	.din	( { jtag_tdo, uart_stx, 6'b000_000 } ),
	.dout	( { jtag_tms, jtag_tck, jtag_trst, jtag_tdi, uart_srx, tdm_out_unused } )
);
 
//
// Instantiation of the Traffic COP
//
tc_top #(`APP_ADDR_DEC_W,
	 `APP_ADDR_SRAM,
	 `APP_ADDR_DEC_W,
	 `APP_ADDR_FLASH,
	 `APP_ADDR_DECP_W,
	 `APP_ADDR_PERIP,
	 `APP_ADDR_DEC_W,
	 `APP_ADDR_VGA,
	 `APP_ADDR_ETH,
	 `APP_ADDR_AUDIO,
	 `APP_ADDR_UART,
	 `APP_ADDR_PS2,
	 `APP_ADDR_RES1,
	 `APP_ADDR_RES2
	) tc_top (
 
	// WISHBONE common
	.wb_clk_i	( wb_clk ),
	.wb_rst_i	( wb_rst ),
 
	// WISHBONE Initiator 0
	.i0_wb_cyc_i	( wb_vm_cyc_o ),
	.i0_wb_stb_i	( wb_vm_stb_o ),
	.i0_wb_cab_i	( wb_vm_cab_o ),
	.i0_wb_adr_i	( wb_vm_adr_o ),
	.i0_wb_sel_i	( wb_vm_sel_o ),
	.i0_wb_we_i	( wb_vm_we_o  ),
	.i0_wb_dat_i	( 32'h0000_0000 ),
	.i0_wb_dat_o	( wb_vm_dat_i ),
	.i0_wb_ack_o	( wb_vm_ack_i ),
	.i0_wb_err_o	( wb_vm_err_i ),
 
	// WISHBONE Initiator 1
	.i1_wb_cyc_i	( wb_em_cyc_o ),
	.i1_wb_stb_i	( wb_em_stb_o ),
	.i1_wb_cab_i	( wb_em_cab_o ),
	.i1_wb_adr_i	( wb_em_adr_o ),
	.i1_wb_sel_i	( wb_em_sel_o ),
	.i1_wb_we_i	( wb_em_we_o  ),
	.i1_wb_dat_i	( wb_em_dat_o ),
	.i1_wb_dat_o	( wb_em_dat_i ),
	.i1_wb_ack_o	( wb_em_ack_i ),
	.i1_wb_err_o	( wb_em_err_i ),
 
	// WISHBONE Initiator 2
	.i2_wb_cyc_i	( wb_am_cyc_o ),
	.i2_wb_stb_i	( wb_am_stb_o ),
	.i2_wb_cab_i	( wb_am_cab_o ),
	.i2_wb_adr_i	( wb_am_adr_o ),
	.i2_wb_sel_i	( wb_am_sel_o ),
	.i2_wb_we_i	( wb_am_we_o  ),
	.i2_wb_dat_i	( wb_am_dat_o ),
	.i2_wb_dat_o	( wb_am_dat_i ),
	.i2_wb_ack_o	( wb_am_ack_i ),
	.i2_wb_err_o	( wb_am_err_i ),
 
	// WISHBONE Initiator 3
	.i3_wb_cyc_i	( wb_dm_cyc_o ),
	.i3_wb_stb_i	( wb_dm_stb_o ),
	.i3_wb_cab_i	( wb_dm_cab_o ),
	.i3_wb_adr_i	( wb_dm_adr_o ),
	.i3_wb_sel_i	( wb_dm_sel_o ),
	.i3_wb_we_i	( wb_dm_we_o  ),
	.i3_wb_dat_i	( wb_dm_dat_o ),
	.i3_wb_dat_o	( wb_dm_dat_i ),
	.i3_wb_ack_o	( wb_dm_ack_i ),
	.i3_wb_err_o	( wb_dm_err_i ),
 
	// WISHBONE Initiator 4
	.i4_wb_cyc_i	( wb_rdm_cyc_o ),
	.i4_wb_stb_i	( wb_rdm_stb_o ),
	.i4_wb_cab_i	( wb_rdm_cab_o ),
	.i4_wb_adr_i	( wb_rdm_adr_o ),
	.i4_wb_sel_i	( wb_rdm_sel_o ),
	.i4_wb_we_i	( wb_rdm_we_o  ),
	.i4_wb_dat_i	( wb_rdm_dat_o ),
	.i4_wb_dat_o	( wb_rdm_dat_i ),
	.i4_wb_ack_o	( wb_rdm_ack_i ),
	.i4_wb_err_o	( wb_rdm_err_i ),
 
	// WISHBONE Initiator 5
	.i5_wb_cyc_i	( wb_rim_cyc_o ),
	.i5_wb_stb_i	( wb_rim_stb_o ),
	.i5_wb_cab_i	( wb_rim_cab_o ),
	.i5_wb_adr_i	( wb_rif_adr ),
	.i5_wb_sel_i	( wb_rim_sel_o ),
	.i5_wb_we_i	( wb_rim_we_o  ),
	.i5_wb_dat_i	( wb_rim_dat_o ),
	.i5_wb_dat_o	( wb_rim_dat_i ),
	.i5_wb_ack_o	( wb_rim_ack_i ),
	.i5_wb_err_o	( wb_rim_err_i ),
 
	// WISHBONE Initiator 6
	.i6_wb_cyc_i	( 1'b0 ),
	.i6_wb_stb_i	( 1'b0 ),
	.i6_wb_cab_i	( 1'b0 ),
	.i6_wb_adr_i	( 32'h0000_0000 ),
	.i6_wb_sel_i	( 4'b0000 ),
	.i6_wb_we_i	( 1'b0 ),
	.i6_wb_dat_i	( 32'h0000_0000 ),
	.i6_wb_dat_o	( ),
	.i6_wb_ack_o	( ),
	.i6_wb_err_o	( ),
 
	// WISHBONE Initiator 7
	.i7_wb_cyc_i	( 1'b0 ),
	.i7_wb_stb_i	( 1'b0 ),
	.i7_wb_cab_i	( 1'b0 ),
	.i7_wb_adr_i	( 32'h0000_0000 ),
	.i7_wb_sel_i	( 4'b0000 ),
	.i7_wb_we_i	( 1'b0 ),
	.i7_wb_dat_i	( 32'h0000_0000 ),
	.i7_wb_dat_o	( ),
	.i7_wb_ack_o	( ),
	.i7_wb_err_o	( ),
 
	// WISHBONE Target 0
	.t0_wb_cyc_o	( wb_ss_cyc_i ),
	.t0_wb_stb_o	( wb_ss_stb_i ),
	.t0_wb_cab_o	( wb_ss_cab_i ),
	.t0_wb_adr_o	( wb_ss_adr_i ),
	.t0_wb_sel_o	( wb_ss_sel_i ),
	.t0_wb_we_o	( wb_ss_we_i  ),
	.t0_wb_dat_o	( wb_ss_dat_i ),
	.t0_wb_dat_i	( wb_ss_dat_o ),
	.t0_wb_ack_i	( wb_ss_ack_o ),
	.t0_wb_err_i	( wb_ss_err_o ),
 
	// WISHBONE Target 1
	.t1_wb_cyc_o	( wb_fs_cyc_i ),
	.t1_wb_stb_o	( wb_fs_stb_i ),
	.t1_wb_cab_o	( wb_fs_cab_i ),
	.t1_wb_adr_o	( wb_fs_adr_i ),
	.t1_wb_sel_o	( wb_fs_sel_i ),
	.t1_wb_we_o	( wb_fs_we_i  ),
	.t1_wb_dat_o	( wb_fs_dat_i ),
	.t1_wb_dat_i	( wb_fs_dat_o ),
	.t1_wb_ack_i	( wb_fs_ack_o ),
	.t1_wb_err_i	( wb_fs_err_o ),
 
	// WISHBONE Target 2
	.t2_wb_cyc_o	( wb_vs_cyc_i ),
	.t2_wb_stb_o	( wb_vs_stb_i ),
	.t2_wb_cab_o	( wb_vs_cab_i ),
	.t2_wb_adr_o	( wb_vs_adr_i ),
	.t2_wb_sel_o	( wb_vs_sel_i ),
	.t2_wb_we_o	( wb_vs_we_i  ),
	.t2_wb_dat_o	( wb_vs_dat_i ),
	.t2_wb_dat_i	( wb_vs_dat_o ),
	.t2_wb_ack_i	( wb_vs_ack_o ),
	.t2_wb_err_i	( wb_vs_err_o ),
 
	// WISHBONE Target 3
	.t3_wb_cyc_o	( wb_es_cyc_i ),
	.t3_wb_stb_o	( wb_es_stb_i ),
	.t3_wb_cab_o	( wb_es_cab_i ),
	.t3_wb_adr_o	( wb_es_adr_i ),
	.t3_wb_sel_o	( wb_es_sel_i ),
	.t3_wb_we_o	( wb_es_we_i  ),
	.t3_wb_dat_o	( wb_es_dat_i ),
	.t3_wb_dat_i	( wb_es_dat_o ),
	.t3_wb_ack_i	( wb_es_ack_o ),
	.t3_wb_err_i	( wb_es_err_o ),
 
	// WISHBONE Target 4
	.t4_wb_cyc_o	( wb_as_cyc_i ),
	.t4_wb_stb_o	( wb_as_stb_i ),
	.t4_wb_cab_o	( wb_as_cab_i ),
	.t4_wb_adr_o	( wb_as_adr_i ),
	.t4_wb_sel_o	( wb_as_sel_i ),
	.t4_wb_we_o	( wb_as_we_i  ),
	.t4_wb_dat_o	( wb_as_dat_i ),
	.t4_wb_dat_i	( wb_as_dat_o ),
	.t4_wb_ack_i	( wb_as_ack_o ),
	.t4_wb_err_i	( wb_as_err_o ),
 
	// WISHBONE Target 5
	.t5_wb_cyc_o	( wb_us_cyc_i ),
	.t5_wb_stb_o	( wb_us_stb_i ),
	.t5_wb_cab_o	( wb_us_cab_i ),
	.t5_wb_adr_o	( wb_us_adr_i ),
	.t5_wb_sel_o	( wb_us_sel_i ),
	.t5_wb_we_o	( wb_us_we_i  ),
	.t5_wb_dat_o	( wb_us_dat_i ),
	.t5_wb_dat_i	( wb_us_dat_o ),
	.t5_wb_ack_i	( wb_us_ack_o ),
	.t5_wb_err_i	( wb_us_err_o ),
 
	// WISHBONE Target 6
	.t6_wb_cyc_o	( wb_ps_cyc_i ),
	.t6_wb_stb_o	( wb_ps_stb_i ),
	.t6_wb_cab_o	( wb_ps_cab_i ),
	.t6_wb_adr_o	( wb_ps_adr_i ),
	.t6_wb_sel_o	( wb_ps_sel_i ),
	.t6_wb_we_o	( wb_ps_we_i  ),
	.t6_wb_dat_o	( wb_ps_dat_i ),
	.t6_wb_dat_i	( wb_ps_dat_o ),
	.t6_wb_ack_i	( wb_ps_ack_o ),
	.t6_wb_err_i	( wb_ps_err_o ),
 
	// WISHBONE Target 7
	.t7_wb_cyc_o	( ),
	.t7_wb_stb_o	( ),
	.t7_wb_cab_o	( ),
	.t7_wb_adr_o	( ),
	.t7_wb_sel_o	( ),
	.t7_wb_we_o	( ),
	.t7_wb_dat_o	( ),
	.t7_wb_dat_i	( 32'h0000_0000 ),
	.t7_wb_ack_i	( 1'b0 ),
	.t7_wb_err_i	( 1'b1 ),
 
	// WISHBONE Target 8
	.t8_wb_cyc_o	( ),
	.t8_wb_stb_o	( ),
	.t8_wb_cab_o	( ),
	.t8_wb_adr_o	( ),
	.t8_wb_sel_o	( ),
	.t8_wb_we_o	( ),
	.t8_wb_dat_o	( ),
	.t8_wb_dat_i	( 32'h0000_0000 ),
	.t8_wb_ack_i	( 1'b0 ),
	.t8_wb_err_i	( 1'b1 )
);
 
endmodule