apps/plugins/zxbox/z80_op1x.c

   1 /*
   2  * Copyright (C) 1996-1998 Szeredi Miklos
   3  * Email: mszeredi@inf.bme.hu
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version. See the file COPYING.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  */
  20
  21 /* IX */
  22
  23 LD_RR_NN(ix, IX, 2)
  24
  25 ADD_RR_RR(ix, IX, bc, BC, 0)
  26 ADD_RR_RR(ix, IX, de, DE, 1)
  27 ADD_RR_RR(ix, IX, ix, IX, 2)
  28 ADD_RR_RR(ix, IX, sp, SP, 3)
  29
  30 INC_RR(ix, IX, 2)
  31
  32 DEC_RR(ix, IX, 2)
  33
  34 LD_INN_RR(ix, IX)
  35
  36 LD_RR_INN(ix, IX)
  37
  38 INC_R(ixh, XH, 4)
  39 INC_R(ixl, XL, 5)
  40
  41 OPDEF(inc_iixd, 0x34)
  42 {
  43   register dbyte addr;
  44   IXDGET(IX, addr);
  45   MODMEMADDR(INC, addr);
  46   ENTIME(19);
  47 }
  48
  49 DEC_R(ixh, XH, 4)
  50 DEC_R(ixl, XL, 5)
  51
  52 OPDEF(dec_iixd, 0x35)
  53 {
  54   register dbyte addr;
  55   IXDGET(IX, addr);
  56   MODMEMADDR(DEC, addr);
  57   ENTIME(19);
  58 }
  59
  60
  61 LD_R_N(ixh, XH, 4)
  62 LD_R_N(ixl, XL, 5)
  63
  64 OPDEF(ld_iixd_n, 0x36)
  65 {
  66   register dbyte addr;
  67   IXDGET(IX, addr);
  68   WRITE(addr, READ(PC));
  69   PC++;
  70   ENTIME(15);
  71 }
  72
  73
  74 /* IY */
  75
  76 LD_RR_NN(iy, IY, 2)
  77
  78 ADD_RR_RR(iy, IY, bc, BC, 0)
  79 ADD_RR_RR(iy, IY, de, DE, 1)
  80 ADD_RR_RR(iy, IY, iy, IY, 2)
  81 ADD_RR_RR(iy, IY, sp, SP, 3)
  82
  83 INC_RR(iy, IY, 2)
  84
  85 DEC_RR(iy, IY, 2)
  86
  87 LD_INN_RR(iy, IY)
  88
  89 LD_RR_INN(iy, IY)
  90
  91 INC_R(iyh, YH, 4)
  92 INC_R(iyl, YL, 5)
  93
  94 OPDEF(inc_iiyd, 0x34)
  95 {
  96   register dbyte addr;
  97   IXDGET(IY, addr);
  98   MODMEMADDR(INC, addr);
  99   ENTIME(19);
 100 }
 101
 102 DEC_R(iyh, YH, 4)
 103 DEC_R(iyl, YL, 5)
 104
 105 OPDEF(dec_iiyd, 0x35)
 106 {
 107   register dbyte addr;
 108   IXDGET(IY, addr);
 109   MODMEMADDR(DEC, addr);
 110   ENTIME(19);
 111 }
 112
 113
 114 LD_R_N(iyh, YH, 4)
 115 LD_R_N(iyl, YL, 5)
 116
 117 OPDEF(ld_iiyd_n, 0x36)
 118 {
 119   register dbyte addr;
 120   IXDGET(IY, addr);
 121   WRITE(addr, READ(PC));
 122   PC++;
 123   ENTIME(15);
 124 }
 125