source/src/vm/upd71071.h

   1 /*
   2         Skelton for retropc emulator
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2007.08.14 -
   6
   7         [ uPD71071 ]
   8 */
   9
  10 #ifndef _UPD71071_H_
  11 #define _UPD71071_H_
  12
  13 #include "vm.h"
  14 #include "../emu.h"
  15 #include "device.h"
  16
  17 #define SIG_UPD71071_CH0        0
  18 #define SIG_UPD71071_CH1        1
  19 #define SIG_UPD71071_CH2        2
  20 #define SIG_UPD71071_CH3        3
  21
  22 class UPD71071 : public DEVICE
  23 {
  24 private:
  25         DEVICE* d_mem;
  26 #ifdef SINGLE_MODE_DMA
  27         DEVICE* d_dma;
  28 #endif
  29         outputs_t outputs_tc;
  30
  31         struct {
  32                 DEVICE* dev;
  33                 uint32 areg, bareg;
  34                 uint16 creg, bcreg;
  35                 uint8 mode;
  36         } dma[4];
  37
  38         uint8 b16, selch, base;
  39         uint16 cmd, tmp;
  40         uint8 req, sreq, mask, tc;
  41
  42 public:
  43         UPD71071(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
  44         {
  45                 for(int i = 0; i < 4; i++) {
  46                         dma[i].dev = vm->dummy;
  47                 }
  48 #ifdef SINGLE_MODE_DMA
  49                 d_dma = NULL;
  50 #endif
  51                 init_output_signals(&outputs_tc);
  52         }
  53         ~UPD71071() {}
  54
  55         // common functions
  56         void reset();
  57         void write_io8(uint32 addr, uint32 data);
  58         uint32 read_io8(uint32 addr);
  59         void write_signal(int id, uint32 data, uint32 mask);
  60         void do_dma();
  61         void save_state(FILEIO* state_fio);
  62         bool load_state(FILEIO* state_fio);
  63
  64         // unique functions
  65         void set_context_memory(DEVICE* device)
  66         {
  67                 d_mem = device;
  68         }
  69         void set_context_ch0(DEVICE* device)
  70         {
  71                 dma[0].dev = device;
  72         }
  73         void set_context_ch1(DEVICE* device)
  74         {
  75                 dma[1].dev = device;
  76         }
  77         void set_context_ch2(DEVICE* device)
  78         {
  79                 dma[2].dev = device;
  80         }
  81         void set_context_ch3(DEVICE* device)
  82         {
  83                 dma[3].dev = device;
  84         }
  85 #ifdef SINGLE_MODE_DMA
  86         void set_context_child_dma(DEVICE* device)
  87         {
  88                 d_dma = device;
  89         }
  90 #endif
  91         void set_context_tc(DEVICE* device, int id, uint32 mask)
  92         {
  93                 register_output_signal(&outputs_tc, device, id, mask);
  94         }
  95 };
  96
  97 #endif
  98