apps/plugins/zxbox/spperif.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 #include "spperif.h"
  22 #include "z80.h"
  23
  24 extern unsigned char rom_imag[];
  25
  26 int SPNM(quick_load) = 1;
  27 int SPNM(load_trapped);
  28
  29 qbyte SPNM(scr_mark)[SCRMARK_SIZE];
  30 byte SPNM(fe_inport_high)[256];
  31
  32 int SPNM(scline);
  33
  34
  35 unsigned char SPNM(colors)[16];
  36
  37 int SPNM(flash_state);
  38
  39 qbyte *SPNM(scr_f0_table);
  40 qbyte *SPNM(scr_f1_table);
  41
  42 byte SPNM(tape_impinfo)[PORT_TIME_NUM];
  43 byte SPNM(fe_inport_default);
  44 byte SPNM(fe_outport_time)[PORT_TIME_NUM];
  45 byte SPNM(sound_buf)[PORT_TIME_NUM];
  46 signed char SPNM(tape_sound)[TMNUM];
  47 int SPNM(scri)[PORT_TIME_NUM];
  48 int SPNM(coli)[PORT_TIME_NUM];
  49
  50 int SPNM(playing_tape) = 0;
  51
  52 char *SPNM(image);
  53 int SPNM(updating);
  54 qbyte SPNM(imag_mark)[192];
  55 qbyte SPNM(imag_horiz);
  56 qbyte SPNM(imag_vert);
  57 int SPNM(border_update);
  58 int SPNM(lastborder);
  59
  60 void SPNM(init_screen_mark)(void)
  61 {
  62   int i;
  63
  64   for(i = 0x200; i < 0x2D8; i++) SPNM(scr_mark)[i] = ~((qbyte) 0);
  65
  66   SPNM(border_update) = 1;
  67 }
  68
  69 void SPNM(init)(void)
  70 {
  71   int i;
  72
  73   PRNM(init)();
  74   PRNM(reset)();
  75
  76   SPNM(load_trapped) = 0;
  77
  78   for(i = 0; i < PORTNUM; i++) PRNM(inports)[i] = 0x00;
  79
  80   DANM(inport_mask) = 0x20;
  81 /* TODO: Kempston is always present, this is not nice */
  82
  83   SPNM(fe_inport_default) = 0xBF; /* Issue 3 */
  84
  85   DANM(ula_outport) = 0xFF;
  86
  87   for(i = 0; i < 256; i++) SPNM(fe_inport_high)[i] = 0xFF;
  88
  89   for(i = 0; i < PORT_TIME_NUM; i++) SPNM(tape_impinfo)[i] = 0;
  90   DANM(imp_change) = 0;
  91   DANM(ula_inport) = SPNM(fe_inport_default);
  92
  93   SPNM(scline) = 0;
  94
  95   for(i = 0; i < 0x4000; i++) PRNM(proc).mem[i] = rom_imag[i];
  96
  97   SPNM(init_screen_mark)();
  98 }