source/src/vm/fp1100/sub.h

   1 /*
   2         CASIO FP-1100 Emulator 'eFP-1100'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2010.06.09-
   6
   7         [ sub pcb ]
   8 */
   9
  10 #ifndef _SUB_H_
  11 #define _SUB_H_
  12
  13 #include "../vm.h"
  14 #include "../../emu.h"
  15 #include "../device.h"
  16
  17 #define SIG_SUB_INT2    0
  18 #define SIG_SUB_COMM    1
  19 #define SIG_SUB_HSYNC   2
  20 #define SIG_SUB_SO      3
  21 #define SIG_SUB_EAR     4
  22
  23 class SUB : public DEVICE
  24 {
  25 private:
  26         // to sub cpu
  27         DEVICE *d_cpu;
  28         // to main pcb
  29         DEVICE *d_main;
  30         // to beep
  31         DEVICE *d_beep;
  32         // to data recorder
  33         DEVICE *d_drec;
  34         // from/to crtc
  35         DEVICE *d_crtc;
  36         uint8 *regs;
  37
  38         uint8 *wbank[0x200];
  39         uint8 *rbank[0x200];
  40         uint8 wdmy[0x80];
  41         uint8 rdmy[0x80];
  42
  43         uint8 ram[0x80];
  44         uint8 vram_b[0x4000];
  45         uint8 vram_r[0x4000];
  46         uint8 vram_g[0x4000];
  47         uint8 sub1[0x1000];
  48         uint8 sub2[0x1000];
  49         uint8 sub3[0x1000];
  50
  51         uint8 pa, pb, pc;
  52         uint8 comm_data;
  53
  54         bool so;
  55         uint8 clock;
  56
  57         // 74LS74
  58         struct {
  59                 bool in_d, in_ck, in_s, in_r;
  60                 bool out_q, out_nq;
  61                 bool tmp_ck;
  62                 void update()
  63                 {
  64                         if(!in_s && in_r) {
  65                                 out_q = true;
  66                                 out_nq = false;
  67                         } else if(in_s && !in_r) {
  68                                 out_q = false;
  69                                 out_nq = true;
  70                         } else if(!in_s && !in_r) {
  71                                 out_q = out_nq = true; // undetermined
  72                         } else if(!tmp_ck && in_ck) {
  73                                 out_q = in_d;
  74                                 out_nq = !in_d;
  75                         }
  76                         tmp_ck = in_ck;
  77                 }
  78         } b16_1, b16_2, g21_1, g21_2;
  79
  80         // 74LS151
  81         struct {
  82                 bool in_d0, in_d1, in_d2, in_d3, in_d4, in_d5, in_d6, in_d7;
  83                 bool in_a, in_b, in_c, in_s;
  84                 bool out_y, out_ny;
  85                 void update()
  86                 {
  87                         if(in_s) {
  88                                 out_y = false;
  89                         } else if(!in_a && !in_b && !in_c) {
  90                                 out_y = in_d0;
  91                         } else if( in_a && !in_b && !in_c) {
  92                                 out_y = in_d1;
  93                         } else if(!in_a &&  in_b && !in_c) {
  94                                 out_y = in_d2;
  95                         } else if( in_a &&  in_b && !in_c) {
  96                                 out_y = in_d3;
  97                         } else if(!in_a && !in_b &&  in_c) {
  98                                 out_y = in_d4;
  99                         } else if( in_a && !in_b &&  in_c) {
 100                                 out_y = in_d5;
 101                         } else if(!in_a &&  in_b &&  in_c) {
 102                                 out_y = in_d6;
 103                         } else if( in_a &&  in_b &&  in_c) {
 104                                 out_y = in_d7;
 105                         }
 106                         out_ny = !out_y;
 107                 }
 108         } c15;
 109
 110         // 74LS93
 111         struct {
 112                 bool in_a, in_b, in_rc1, in_rc2;
 113                 bool out_qa, out_qb, out_qc;
 114                 bool tmp_a, tmp_b;
 115                 uint8 counter_a, counter_b;
 116                 void update()
 117                 {
 118                         if(in_rc1 && in_rc2) {
 119                                 counter_a = counter_b = 0;
 120                         } else {
 121                                 if(tmp_a && !in_a) {
 122                                         counter_a++;
 123                                 }
 124                                 if(tmp_b && !in_b) {
 125                                         counter_b++;
 126                                 }
 127                         }
 128                         tmp_a = in_a;
 129                         tmp_b = in_b;
 130                         out_qa = ((counter_a & 1) != 0);
 131                         out_qb = ((counter_b & 1) != 0);
 132                         out_qc = ((counter_b & 2) != 0);
 133                 }
 134         } c16;
 135
 136         // TC4024BP
 137         struct {
 138                 bool in_ck, in_clr;
 139                 bool out_q5, out_q6;
 140                 bool tmp_ck;
 141                 uint8 counter;
 142                 void update()
 143                 {
 144                         if(in_clr) {
 145                                 counter = 0;
 146                         } else if(tmp_ck && !in_ck) {
 147                                 counter++;
 148                         }
 149                         tmp_ck = in_ck;
 150                         out_q5 = ((counter & 0x10) != 0);
 151                         out_q6 = ((counter & 0x20) != 0);
 152                 }
 153         } f21;
 154
 155         void update_cmt();
 156
 157         const uint8 *key_stat;
 158         uint8 key_sel, key_data;
 159
 160         uint8 color_reg;
 161         bool hsync, wait;
 162         uint8 cblink;
 163         uint8 screen[400][640];
 164         scrntype palette_pc[8];
 165
 166         void key_update();
 167
 168 public:
 169         SUB(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu) {}
 170         ~SUB() {}
 171
 172         // common functions
 173         void initialize();
 174         void reset();
 175         void write_data8(uint32 addr, uint32 data);
 176         uint32 read_data8(uint32 addr);
 177         void write_io8(uint32 addr, uint32 data);
 178         uint32 read_io8(uint32 addr);
 179         void write_signal(int id, uint32 data, uint32 mask);
 180         void event_frame();
 181         void event_callback(int event_id, int err);
 182         void save_state(FILEIO* state_fio);
 183         bool load_state(FILEIO* state_fio);
 184
 185         // unique functions
 186         void set_context_cpu(DEVICE *device)
 187         {
 188                 d_cpu = device;
 189         }
 190         void set_context_main(DEVICE *device)
 191         {
 192                 d_main = device;
 193         }
 194         void set_context_beep(DEVICE *device)
 195         {
 196                 d_beep = device;
 197         }
 198         void set_context_drec(DEVICE *device)
 199         {
 200                 d_drec = device;
 201         }
 202         void set_context_crtc(DEVICE *device, uint8* ptr)
 203         {
 204                 d_crtc = device;
 205                 regs = ptr;
 206         }
 207         void key_down(int code);
 208         void key_up(int code);
 209         void draw_screen();
 210 };
 211
 212 #endif