lm32_interrupt.v

changeset 26
73de224304c1
parent 0
cd0b58aa6f83
child 27
d6c693415d59
     1.1 --- a/lm32_interrupt.v	Sun Mar 06 21:14:43 2011 +0000
     1.2 +++ b/lm32_interrupt.v	Sat Aug 06 00:02:46 2011 +0100
     1.3 @@ -1,18 +1,39 @@
     1.4 -// =============================================================================
     1.5 -//                           COPYRIGHT NOTICE
     1.6 -// Copyright 2006 (c) Lattice Semiconductor Corporation
     1.7 -// ALL RIGHTS RESERVED
     1.8 -// This confidential and proprietary software may be used only as authorised by
     1.9 -// a licensing agreement from Lattice Semiconductor Corporation.
    1.10 -// The entire notice above must be reproduced on all authorized copies and
    1.11 -// copies may only be made to the extent permitted by a licensing agreement from
    1.12 -// Lattice Semiconductor Corporation.
    1.13 +//   ==================================================================
    1.14 +//   >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
    1.15 +//   ------------------------------------------------------------------
    1.16 +//   Copyright (c) 2006-2011 by Lattice Semiconductor Corporation
    1.17 +//   ALL RIGHTS RESERVED 
    1.18 +//   ------------------------------------------------------------------
    1.19 +//
    1.20 +//   IMPORTANT: THIS FILE IS AUTO-GENERATED BY THE LATTICEMICO SYSTEM.
    1.21 +//
    1.22 +//   Permission:
    1.23 +//
    1.24 +//      Lattice Semiconductor grants permission to use this code
    1.25 +//      pursuant to the terms of the Lattice Semiconductor Corporation
    1.26 +//      Open Source License Agreement.  
    1.27 +//
    1.28 +//   Disclaimer:
    1.29  //
    1.30 -// Lattice Semiconductor Corporation        TEL : 1-800-Lattice (USA and Canada)
    1.31 -// 5555 NE Moore Court                            408-826-6000 (other locations)
    1.32 -// Hillsboro, OR 97124                     web  : http://www.latticesemi.com/
    1.33 -// U.S.A                                   email: techsupport@latticesemi.com
    1.34 -// =============================================================================/
    1.35 +//      Lattice Semiconductor provides no warranty regarding the use or
    1.36 +//      functionality of this code. It is the user's responsibility to
    1.37 +//      verify the userís design for consistency and functionality through
    1.38 +//      the use of formal verification methods.
    1.39 +//
    1.40 +//   --------------------------------------------------------------------
    1.41 +//
    1.42 +//                  Lattice Semiconductor Corporation
    1.43 +//                  5555 NE Moore Court
    1.44 +//                  Hillsboro, OR 97214
    1.45 +//                  U.S.A
    1.46 +//
    1.47 +//                  TEL: 1-800-Lattice (USA and Canada)
    1.48 +//                         503-286-8001 (other locations)
    1.49 +//
    1.50 +//                  web: http://www.latticesemi.com/
    1.51 +//                  email: techsupport@latticesemi.com
    1.52 +//
    1.53 +//   --------------------------------------------------------------------
    1.54  //                         FILE DETAILS
    1.55  // Project          : LatticeMico32
    1.56  // File             : lm32_interrupt.v
    1.57 @@ -199,64 +220,64 @@
    1.58  begin
    1.59      if (rst_i == `TRUE)
    1.60      begin
    1.61 -        ie <= `FALSE;
    1.62 -        eie <= `FALSE;
    1.63 +        ie <= #1 `FALSE;
    1.64 +        eie <= #1 `FALSE;
    1.65  `ifdef CFG_DEBUG_ENABLED
    1.66 -        bie <= `FALSE;
    1.67 +        bie <= #1 `FALSE;
    1.68  `endif
    1.69 -        im <= {interrupts{1'b0}};
    1.70 -        ip <= {interrupts{1'b0}};
    1.71 +        im <= #1 {interrupts{1'b0}};
    1.72 +        ip <= #1 {interrupts{1'b0}};
    1.73      end
    1.74      else
    1.75      begin
    1.76          // Set IP bit when interrupt line is asserted
    1.77 -        ip <= asserted;
    1.78 +        ip <= #1 asserted;
    1.79  `ifdef CFG_DEBUG_ENABLED
    1.80          if (non_debug_exception == `TRUE)
    1.81          begin
    1.82              // Save and then clear interrupt enable
    1.83 -            eie <= ie;
    1.84 -            ie <= `FALSE;
    1.85 +            eie <= #1 ie;
    1.86 +            ie <= #1 `FALSE;
    1.87          end
    1.88          else if (debug_exception == `TRUE)
    1.89          begin
    1.90              // Save and then clear interrupt enable
    1.91 -            bie <= ie;
    1.92 -            ie <= `FALSE;
    1.93 +            bie <= #1 ie;
    1.94 +            ie <= #1 `FALSE;
    1.95          end
    1.96  `else
    1.97          if (exception == `TRUE)
    1.98          begin
    1.99              // Save and then clear interrupt enable
   1.100 -            eie <= ie;
   1.101 -            ie <= `FALSE;
   1.102 +            eie <= #1 ie;
   1.103 +            ie <= #1 `FALSE;
   1.104          end
   1.105  `endif
   1.106          else if (stall_x == `FALSE)
   1.107          begin
   1.108              if (eret_q_x == `TRUE)
   1.109                  // Restore interrupt enable
   1.110 -                ie <= eie;          
   1.111 +                ie <= #1 eie;          
   1.112  `ifdef CFG_DEBUG_ENABLED
   1.113              else if (bret_q_x == `TRUE)
   1.114                  // Restore interrupt enable
   1.115 -                ie <= bie;
   1.116 +                ie <= #1 bie;
   1.117  `endif
   1.118              else if (csr_write_enable == `TRUE)
   1.119              begin
   1.120                  // Handle wcsr write
   1.121                  if (csr == `LM32_CSR_IE)
   1.122                  begin
   1.123 -                    ie <= csr_write_data[0];
   1.124 -                    eie <= csr_write_data[1];
   1.125 +                    ie <= #1 csr_write_data[0];
   1.126 +                    eie <= #1 csr_write_data[1];
   1.127  `ifdef CFG_DEBUG_ENABLED
   1.128 -                    bie <= csr_write_data[2];
   1.129 +                    bie <= #1 csr_write_data[2];
   1.130  `endif
   1.131                  end
   1.132                  if (csr == `LM32_CSR_IM)
   1.133 -                    im <= csr_write_data[interrupts-1:0];
   1.134 +                    im <= #1 csr_write_data[interrupts-1:0];
   1.135                  if (csr == `LM32_CSR_IP)
   1.136 -                    ip <= asserted & ~csr_write_data[interrupts-1:0];
   1.137 +                    ip <= #1 asserted & ~csr_write_data[interrupts-1:0];
   1.138              end
   1.139          end
   1.140      end
   1.141 @@ -269,61 +290,61 @@
   1.142  begin
   1.143      if (rst_i == `TRUE)
   1.144      begin
   1.145 -        ie <= `FALSE;
   1.146 -        eie <= `FALSE;
   1.147 +        ie <= #1 `FALSE;
   1.148 +        eie <= #1 `FALSE;
   1.149  `ifdef CFG_DEBUG_ENABLED
   1.150 -        bie <= `FALSE;
   1.151 +        bie <= #1 `FALSE;
   1.152  `endif
   1.153 -        ip <= {interrupts{1'b0}};
   1.154 +        ip <= #1 {interrupts{1'b0}};
   1.155      end
   1.156      else
   1.157      begin
   1.158          // Set IP bit when interrupt line is asserted
   1.159 -        ip <= asserted;
   1.160 +        ip <= #1 asserted;
   1.161  `ifdef CFG_DEBUG_ENABLED
   1.162          if (non_debug_exception == `TRUE)
   1.163          begin
   1.164              // Save and then clear interrupt enable
   1.165 -            eie <= ie;
   1.166 -            ie <= `FALSE;
   1.167 +            eie <= #1 ie;
   1.168 +            ie <= #1 `FALSE;
   1.169          end
   1.170          else if (debug_exception == `TRUE)
   1.171          begin
   1.172              // Save and then clear interrupt enable
   1.173 -            bie <= ie;
   1.174 -            ie <= `FALSE;
   1.175 +            bie <= #1 ie;
   1.176 +            ie <= #1 `FALSE;
   1.177          end
   1.178  `else
   1.179          if (exception == `TRUE)
   1.180          begin
   1.181              // Save and then clear interrupt enable
   1.182 -            eie <= ie;
   1.183 -            ie <= `FALSE;
   1.184 +            eie <= #1 ie;
   1.185 +            ie <= #1 `FALSE;
   1.186          end
   1.187  `endif
   1.188          else if (stall_x == `FALSE)
   1.189          begin
   1.190              if (eret_q_x == `TRUE)
   1.191                  // Restore interrupt enable
   1.192 -                ie <= eie;          
   1.193 +                ie <= #1 eie;          
   1.194  `ifdef CFG_DEBUG_ENABLED
   1.195              else if (bret_q_x == `TRUE)
   1.196                  // Restore interrupt enable
   1.197 -                ie <= bie;
   1.198 +                ie <= #1 bie;
   1.199  `endif
   1.200              else if (csr_write_enable == `TRUE)
   1.201              begin
   1.202                  // Handle wcsr write
   1.203                  if (csr == `LM32_CSR_IE)
   1.204                  begin
   1.205 -                    ie <= csr_write_data[0];
   1.206 -                    eie <= csr_write_data[1];
   1.207 +                    ie <= #1 csr_write_data[0];
   1.208 +                    eie <= #1 csr_write_data[1];
   1.209  `ifdef CFG_DEBUG_ENABLED
   1.210 -                    bie <= csr_write_data[2];
   1.211 +                    bie <= #1 csr_write_data[2];
   1.212  `endif
   1.213                  end
   1.214                  if (csr == `LM32_CSR_IP)
   1.215 -                    ip <= asserted & ~csr_write_data[interrupts-1:0];
   1.216 +                    ip <= #1 asserted & ~csr_write_data[interrupts-1:0];
   1.217              end
   1.218          end
   1.219      end