/*
 * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

typedef enum {LOW, HIGH} level_t;

//static void z80_setup_adrbus_tristate(void);
//static void z80_setup_adrbus_active(void);
//static void z80_setup_dbus_in(void);
//static void z80_setup_dbus_out(void);
//static void z80_setaddress(uint32_t addr);
void z80_setup_bus(void);
void z80_write(uint32_t addr, uint8_t data);
uint8_t z80_read(uint32_t addr);
void z80_request_bus(void);
void z80_release_bus(void);
void z80_memset(uint32_t addr, uint8_t data, int length);
void z80_reset(level_t level);
void z80_reset_pulse(void);
void z80_busreq(level_t level);
void z80_write_block(uint8_t *src, uint32_t dest, uint32_t length);
int z80_stat_halt(void);


typedef enum fifo_t {fifo_in, fifo_out, NUM_FIFOS} fifo_t;

void z80_memfifo_init(const fifo_t f, uint32_t adr);
int z80_memfifo_is_empty(const fifo_t f);
int z80_memfifo_is_full(const fifo_t f);
uint8_t z80_memfifo_getc(const fifo_t f);
void z80_memfifo_putc(fifo_t f, uint8_t val);

void z80_setup_msg_fifo(void);
void z80_init_msg_fifo(uint32_t addr);
int z80_msg_fifo_getc(void);