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 #include "common.h"
   7
   8 #define ZST_ACQUIRED    0x01
   9 #define ZST_RUNNING     0x02
  10
  11 typedef enum {
  12         RESET           = 0x00,
  13         RESET_AQRD      = ZST_ACQUIRED,
  14         RUNNING         = ZST_RUNNING,
  15         RUNNING_AQRD    = ZST_RUNNING | ZST_ACQUIRED,
  16 } zstate_t;
  17
  18 typedef enum {
  19         Reset,
  20         Request,
  21         Release,
  22         Run,
  23         Restart,
  24         M_Cycle
  25 } bus_cmd_t;
  26
  27 typedef enum {LOW, HIGH} level_t;
  28
  29
  30 void z80_bus_request_or_exit(void);
  31
  32 zstate_t z80_bus_state(void);
  33 zstate_t z80_bus_cmd(bus_cmd_t cmd);
  34 void z80_setup_bus(void);
  35 int z80_stat_reset(void);
  36 //void z80_busreq(level_t level);
  37 int z80_stat_halt(void);
  38
  39
  40 int32_t z80_memsize_detect(void);
  41 void z80_write(uint32_t addr, uint8_t data);
  42 uint8_t z80_read(uint32_t addr);
  43 void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
  44 void z80_write_block_P(const FLASH uint8_t *src, uint32_t dest, uint32_t length);
  45 void z80_write_block(const uint8_t *src, uint32_t dest, uint32_t length);
  46 void z80_read_block (uint8_t *dest, uint32_t src, size_t length);
  47
  48
  49 typedef enum fifo_t {
  50                 fifo_msgin, fifo_msgout,
  51                 fifo_conin, fifo_conout,
  52                 NUM_FIFOS
  53         } fifo_t;
  54
  55 void z80_memfifo_init(const fifo_t f, uint32_t adr);
  56 int z80_memfifo_is_empty(const fifo_t f);
  57 int z80_memfifo_is_full(const fifo_t f);
  58 int z80_memfifo_getc(const fifo_t f);
  59 uint8_t z80_memfifo_getc_wait(const fifo_t f);
  60 void z80_memfifo_putc(fifo_t f, uint8_t val);