// license:BSD-3-Clause // copyright-holders:Robbbert /* ay31015.h Written for MESS by Robbbert on May 29th, 2008. */ #ifndef MAME_MACHINE_AY31015_H #define MAME_MACHINE_AY31015_H #pragma once /*************************************************************************** DEVICE INTERFACE ***************************************************************************/ class ay31015_device : public device_t { public: ay31015_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); void set_auto_rdav(bool auto_rdav) { m_auto_rdav = auto_rdav; } auto read_si_callback() { return m_read_si_cb.bind(); } auto write_so_callback() { return m_write_so_cb.bind(); } auto write_pe_callback() { return m_write_pe_cb.bind(); } auto write_fe_callback() { return m_write_fe_cb.bind(); } auto write_or_callback() { return m_write_or_cb.bind(); } auto write_dav_callback() { return m_write_dav_cb.bind(); } auto write_tbmt_callback() { return m_write_tbmt_cb.bind(); } auto write_eoc_callback() { return m_write_eoc_cb.bind(); } /* Set an input pin */ DECLARE_WRITE_LINE_MEMBER(write_swe) { set_input_pin(SWE, state); } DECLARE_WRITE_LINE_MEMBER(write_rcp) { set_input_pin(RCP, state); } DECLARE_WRITE_LINE_MEMBER(write_rdav) { set_input_pin(RDAV, state); } DECLARE_WRITE_LINE_MEMBER(write_si) { set_input_pin(SI, state); } DECLARE_WRITE_LINE_MEMBER(write_xr) { set_input_pin(XR, state); } DECLARE_WRITE_LINE_MEMBER(write_cs) { set_input_pin(CS, state); } DECLARE_WRITE_LINE_MEMBER(write_np) { set_input_pin(NP, state); } DECLARE_WRITE_LINE_MEMBER(write_tsb) { set_input_pin(TSB, state); } DECLARE_WRITE_LINE_MEMBER(write_nb2) { set_input_pin(NB2, state); } DECLARE_WRITE_LINE_MEMBER(write_nb1) { set_input_pin(NB1, state); } DECLARE_WRITE_LINE_MEMBER(write_eps) { set_input_pin(EPS, state); } DECLARE_WRITE_LINE_MEMBER(write_tcp) { set_input_pin(TCP, state); } /* Get an output pin */ DECLARE_READ_LINE_MEMBER(pe_r) { return get_output_pin(PE); } DECLARE_READ_LINE_MEMBER(fe_r) { return get_output_pin(FE); } DECLARE_READ_LINE_MEMBER(or_r) { return get_output_pin(OR); } DECLARE_READ_LINE_MEMBER(dav_r) { return get_output_pin(DAV); } DECLARE_READ_LINE_MEMBER(tbmt_r) { return get_output_pin(TBMT); } DECLARE_READ_LINE_MEMBER(eoc_r) { return get_output_pin(EOC); } DECLARE_READ_LINE_MEMBER(so_r) { return get_output_pin(SO); } /* Reead the received data */ /* The received data is available on RD8-RD1 (pins 5-12) */ uint8_t get_received_data(); /* Set the transmitter buffer */ /* The data to transmit is set on DB1-DB8 (pins 26-33) */ void set_transmit_data( uint8_t data ); DECLARE_READ8_MEMBER(receive); DECLARE_WRITE8_MEMBER(transmit); protected: enum input_pin { SWE = 16, // -SWE - Pin 16 - Status word enable RCP = 17, // RCP - Pin 17 - Receiver clock pulse RDAV = 18, // -RDAV - Pin 18 - Reset data available SI = 20, // SI - Pin 20 - Serial input XR = 21, // XR - Pin 21 - External reset CS = 34, // CS - Pin 34 - Control strobe NP = 35, // NP - Pin 35 - No parity TSB = 36, // TSB - Pin 36 - Number of stop bits NB2 = 37, // NB2 - Pin 37 - Number of bits #2 NB1 = 38, // NB1 - Pin 38 - Number of bits #1 EPS = 39, // EPS - Pin 39 - Odd/Even parity select TCP = 40 // TCP - Pin 40 - Transmitter clock pulse }; enum output_pin { PE = 13, // PE - Pin 13 - Parity error FE = 14, // FE - Pin 14 - Framing error OR = 15, // OR - Pin 15 - Over-run DAV = 19, // DAV - Pin 19 - Data available TBMT = 22, // TBMT - Pin 22 - Transmit buffer empty EOC = 24, // EOC - Pin 24 - End of character SO = 25 // SO - Pin 25 - Serial output }; enum state_t : u8 { IDLE, START_BIT, PROCESSING, PARITY_BIT, FIRST_STOP_BIT, SECOND_STOP_BIT, PREP_TIME }; ay31015_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_resolve_objects() override; virtual void device_start() override; virtual void device_reset() override; void rx_process(); void tx_process(); virtual void internal_reset(); // internal state inline uint8_t get_si(); inline void set_so(int data); inline void update_status_pin(uint8_t reg_bit, output_pin pin, devcb_write_line &write_cb); void update_status_pins(); void transfer_control_pins(); void set_input_pin(input_pin pin, int data); int get_output_pin(output_pin pin); int m_pins[41]; uint8_t m_control_reg; uint8_t m_status_reg; uint16_t m_second_stop_bit; // 0, 8, 16 uint16_t m_total_pulses; // bits * 16 uint8_t m_internal_sample; state_t m_rx_state; uint8_t m_rx_data; // byte being received uint8_t m_rx_buffer; // received byte waiting to be accepted by computer uint8_t m_rx_bit_count; uint8_t m_rx_parity; uint16_t m_rx_pulses; // total pulses left state_t m_tx_state; uint8_t m_tx_data; // byte being sent uint8_t m_tx_buffer; // next byte to send uint8_t m_tx_parity; uint16_t m_tx_pulses; // total pulses left devcb_read_line m_read_si_cb; // SI - pin 20 - This will be called whenever the SI pin is sampled. Optional devcb_write_line m_write_so_cb; // SO - pin 25 - This will be called whenever data is put on the SO pin. Optional devcb_write_line m_write_pe_cb; // PE - pin 13 - This will be called whenever the PE pin may have changed. Optional devcb_write_line m_write_fe_cb; // FE - pin 14 - This will be called whenever the FE pin may have changed. Optional devcb_write_line m_write_or_cb; // OR - pin 15 - This will be called whenever the OR pin may have changed. Optional devcb_write_line m_write_dav_cb; // DAV - pin 19 - This will be called whenever the DAV pin may have changed. Optional devcb_write_line m_write_tbmt_cb; // TBMT - pin 22 - This will be called whenever the TBMT pin may have changed. Optional devcb_write_line m_write_eoc_cb; // EOC - pin 24 - This will be called whenever the EOC pin may have changed. Optional bool m_auto_rdav; // true if RDAV (pin 18) is tied to RDE (pin 4) }; class ay51013_device : public ay31015_device { public: ay51013_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); protected: virtual void internal_reset() override; }; ALLOW_SAVE_TYPE(ay31015_device::state_t); DECLARE_DEVICE_TYPE(AY31015, ay31015_device) // For AY-3-1014A, AY-3-1015(D) and HD6402 variants DECLARE_DEVICE_TYPE(AY51013, ay51013_device) // For AY-3-1014, AY-5-1013 and AY-6-1013 variants #endif // MAME_MACHINE_AY31015_H