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/*
* (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#define ZST_ACQUIRED 0x01
#define ZST_RUNNING 0x02
typedef enum {
RESET = 0x00,
RESET_AQRD = ZST_ACQUIRED,
RUNNING = ZST_RUNNING,
RUNNING_AQRD = ZST_RUNNING | ZST_ACQUIRED,
} zstate_t;
typedef enum {
Reset,
Request,
Release,
Run,
Restart,
M_Cycle
} bus_cmd_t;
typedef enum {LOW, HIGH} level_t;
zstate_t z80_bus_state(void);
zstate_t z80_bus_cmd(bus_cmd_t cmd);
void z80_setup_bus(void);
int z80_stat_reset(void);
//void z80_busreq(level_t level);
int z80_stat_halt(void);
void z80_write(uint32_t addr, uint8_t data);
uint8_t z80_read(uint32_t addr);
void z80_memset(uint32_t addr, uint8_t data, uint32_t length);
void z80_write_block_P(const FLASH uint8_t *src, uint32_t dest, uint32_t length);
void z80_write_block(const uint8_t *src, uint32_t dest, uint32_t length);
void z80_read_block (uint8_t *dest, uint32_t src, size_t length);
typedef enum fifo_t {
fifo_msgin, fifo_msgout,
fifo_conin, fifo_conout,
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);
int z80_memfifo_getc(const fifo_t f);
uint8_t z80_memfifo_getc_wait(const fifo_t f);
void z80_memfifo_putc(fifo_t f, uint8_t val);
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