void z80_bus_request_or_exit(void);
+uint32_t z80_get_busreq_cycles(void);
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_toggle_reset(void);
+void z80_toggle_busreq(void);
int32_t z80_memsize_detect(void);