source/src/vm/mz80k/printer.cpp

   1 /*
   2         SHARP MZ-80K/C Emulator 'EmuZ-80K'
   3         SHARP MZ-1200 Emulator 'EmuZ-1200'
   4         SHARP MZ-80A Emulator 'EmuZ-80A'
   5
   6         Author : Hideki Suga
   7         Date   : 2016.03.18-
   8
   9         [ printer ]
  10 */
  11
  12 #include "printer.h"
  13
  14 void PRINTER::write_io8(uint32_t addr, uint32_t data)
  15 {
  16         switch(addr & 0xff) {
  17         case 0xfe:
  18                 d_prn->write_signal(SIG_PRINTER_STROBE, data, 0x80);
  19                 d_prn->write_signal(SIG_PRINTER_RESET, data, 0x40);
  20                 break;
  21         case 0xff:
  22 #if defined(_MZ1200) || defined(_MZ80K)
  23                 out_ch = data & 0xff;
  24 #endif
  25                 d_prn->write_signal(SIG_PRINTER_DATA, data, 0xff);
  26                 break;
  27         }
  28 }
  29
  30 uint32_t PRINTER::read_io8(uint32_t addr)
  31 {
  32         switch(addr & 0xff) {
  33         case 0xfe:
  34 #if defined(_MZ1200) || defined(_MZ80K)
  35                 if(out_ch == 0x05) {
  36                         return 0xf0 | (d_prn->read_signal(SIG_PRINTER_BUSY) ? 1 : 0);
  37                 } else
  38 #endif
  39                 return 0xf2 | (d_prn->read_signal(SIG_PRINTER_BUSY) ? 1 : 0);
  40         }
  41         return 0xff;
  42 }
  43
  44 #if defined(_MZ1200) || defined(_MZ80K)
  45 #define STATE_VERSION   1
  46
  47 void PRINTER::save_state(FILEIO* state_fio)
  48 {
  49         state_fio->FputUint32(STATE_VERSION);
  50         state_fio->FputInt32(this_device_id);
  51
  52         state_fio->FputUint8(out_ch);
  53 }
  54
  55 bool PRINTER::load_state(FILEIO* state_fio)
  56 {
  57         if(state_fio->FgetUint32() != STATE_VERSION) {
  58                 return false;
  59         }
  60         if(state_fio->FgetInt32() != this_device_id) {
  61                 return false;
  62         }
  63         out_ch = state_fio->FgetUint8();
  64         return true;
  65 }
  66 #endif
  67