git.zerfleddert.de Git - fpga-games/blob - galaxian/src/z80ip.v

   1 //===============================================================================
   2 // FPGA MOONCRESTA  T80_IP I/F
   3 //
   4 // Version : 1.00
   5 //
   6 // Copyright(c) 2004 Katsumi Degawa , All rights reserved
   7 //
   8 // Important !
   9 //
  10 // This program is freeware for non-commercial use.
  11 // An author does no guarantee about this program.
  12 // You can use this under your own risk.
  13 //
  14 //================================================================================
  15
  16 module Z80IP(
  17
  18 ADRS,
  19 DINP,
  20 DOUT,
  21 BUSWO,
  22 RESET_N,
  23 INT_N,
  24 NMI_N,
  25 WAIT_N,
  26 M1_N,
  27 MREQ_N,
  28 IORQ_N,
  29 RD_N,
  30 WR_N,
  31 RFSH_N,
  32 HALT_N,
  33 CLK
  34
  35 );
  36
  37 // I/O assign
  38 output [15:0]ADRS;
  39 input  [7:0] DINP;
  40 output [7:0] DOUT;
  41 input  RESET_N,INT_N,NMI_N,WAIT_N,CLK;
  42 output M1_N,MREQ_N,IORQ_N,RD_N,WR_N,RFSH_N,HALT_N,BUSWO;
  43
  44 // Z80IP interface
  45 T80as z80core (
  46
  47 .RESET_n(RESET_N),
  48 .CLK_n(CLK),
  49 .WAIT_n(WAIT_N),
  50 .INT_n(INT_N),
  51 .NMI_n(NMI_N),
  52 .BUSRQ_n(1'b1),
  53 .M1_n(M1_N),
  54 .MREQ_n(MREQ_N),
  55 .IORQ_n(IORQ_N),
  56 .RD_n(RD_N),
  57 .WR_n(WR_N),
  58 .RFSH_n(RFSH_N),
  59 .HALT_n(HALT_N),
  60 .BUSAK_n(),
  61 .A(ADRS),
  62 .DI(DINP),
  63 .DO(DOUT),
  64 .DOE(BUSWO)
  65
  66 );
  67
  68 endmodule
  69