include/z80-if.h

   1
   2 #define ZST_ACQUIRED    0x01
   3 #define ZST_RUNNING     0x02
   4
   5 typedef enum {
   6         RESET           = 0x00,
   7         RESET_AQRD      = ZST_ACQUIRED,
   8         RUNNING         = ZST_RUNNING,
   9         RUNNING_AQRD    = ZST_RUNNING | ZST_ACQUIRED,
  10 } zstate_t;
  11
  12 typedef enum {
  13         Reset,
  14         Request,
  15         Release,
  16         Run,
  17         Restart,
  18         M_Cycle
  19 } bus_cmd_t;
  20
  21 typedef enum {LOW, HIGH} level_t;
  22
  23 zstate_t z80_bus_state(void);
  24 zstate_t z80_bus_cmd(bus_cmd_t cmd);
  25 void z80_setup_bus(void);
  26 int z80_stat_reset(void);
  27 //void z80_busreq(level_t level);
  28 int z80_stat_halt(void);
  29
  30
  31 void z80_write(uint32_t addr, uint8_t data);
  32 uint8_t z80_read(uint32_t addr);
  33 void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
  34 void z80_write_block(const FLASH uint8_t *src, uint32_t dest, uint32_t length);
  35
  36
  37 typedef enum fifo_t {
  38                 fifo_msgin, fifo_msgout,
  39                 fifo_conout, fifo_conin,
  40                 NUM_FIFOS
  41         } fifo_t;
  42
  43 void z80_memfifo_init(const fifo_t f, uint32_t adr);
  44 int z80_memfifo_is_empty(const fifo_t f);
  45 int z80_memfifo_is_full(const fifo_t f);
  46 int z80_memfifo_getc(const fifo_t f);
  47 uint8_t z80_memfifo_getc_wait(const fifo_t f);
  48 void z80_memfifo_putc(fifo_t f, uint8_t val);
  49