include/z80-if.h

   1 /*
   2  * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #define ZST_ACQUIRED    0x01
   8 #define ZST_RUNNING     0x02
   9
  10 typedef enum {
  11         RESET           = 0x00,
  12         RESET_AQRD      = ZST_ACQUIRED,
  13         RUNNING         = ZST_RUNNING,
  14         RUNNING_AQRD    = ZST_RUNNING | ZST_ACQUIRED,
  15 } zstate_t;
  16
  17 typedef enum {
  18         Reset,
  19         Request,
  20         Release,
  21         Run,
  22         Restart,
  23         M_Cycle
  24 } bus_cmd_t;
  25
  26 typedef enum {LOW, HIGH} level_t;
  27
  28 zstate_t z80_bus_state(void);
  29 zstate_t z80_bus_cmd(bus_cmd_t cmd);
  30 void z80_setup_bus(void);
  31 int z80_stat_reset(void);
  32 //void z80_busreq(level_t level);
  33 int z80_stat_halt(void);
  34
  35
  36 void z80_write(uint32_t addr, uint8_t data);
  37 uint8_t z80_read(uint32_t addr);
  38 void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
  39 void z80_write_block_P(const FLASH uint8_t *src, uint32_t dest, uint32_t length);
  40 void z80_write_block(const uint8_t *src, uint32_t dest, uint32_t length);
  41 void z80_read_block (uint8_t *dest, uint32_t src, size_t length);
  42
  43
  44 typedef enum fifo_t {
  45                 fifo_msgin, fifo_msgout,
  46                 fifo_conin, fifo_conout,
  47                 NUM_FIFOS
  48         } fifo_t;
  49
  50 void z80_memfifo_init(const fifo_t f, uint32_t adr);
  51 int z80_memfifo_is_empty(const fifo_t f);
  52 int z80_memfifo_is_full(const fifo_t f);
  53 int z80_memfifo_getc(const fifo_t f);
  54 uint8_t z80_memfifo_getc_wait(const fifo_t f);
  55 void z80_memfifo_putc(fifo_t f, uint8_t val);