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author | 2015-09-13 08:41:44 +0200 | |
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committer | 2015-09-13 08:41:44 +0200 | |
commit | f88cefad27a1737c76e09d99c9fb43e173506081 (patch) | |
tree | 2d8167d03579c46e226471747eb4407bd00ed6fa /src/devices/machine/ay31015.h | |
parent | e92ac9e0fa8e99869894bea00589bbb526be30aa (diff) |
Move all devices into separate part of src tree (nw)
Diffstat (limited to 'src/devices/machine/ay31015.h')
-rw-r--r-- | src/devices/machine/ay31015.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/devices/machine/ay31015.h b/src/devices/machine/ay31015.h new file mode 100644 index 00000000000..2f2ae33eca8 --- /dev/null +++ b/src/devices/machine/ay31015.h @@ -0,0 +1,198 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/* ay31015.h + + Written for MESS by Robbbert on May 29th, 2008. + +*/ + +#ifndef __AY31015_H_ +#define __AY31015_H_ + +/*************************************************************************** + TYPE DEFINITIONS +***************************************************************************/ + + +enum ay31015_input_pin_t +{ + AY31015_SWE = 16, /* -SWE - Pin 16 - Status word enable */ + AY31015_RDAV = 18, /* -RDAV - Pin 18 - Reset data available */ + AY31015_SI = 20, /* SI - Pin 20 - Serial input */ + AY31015_XR = 21, /* XR - Pin 21 - External reset */ + AY31015_CS = 34, /* CS - Pin 34 - Control strobe */ + AY31015_NP = 35, /* NP - Pin 35 - No parity */ + AY31015_TSB = 36, /* TSB - Pin 36 - Number of stop bits */ + AY31015_NB1 = 37, /* NB1 - Pin 37 - Number of bits #1 */ + AY31015_NB2 = 38, /* NB2 - Pin 38 - Number of bits #2 */ + AY31015_EPS = 39 /* EPS - Pin 39 - Odd/Even parity select */ +}; + + +enum ay31015_output_pin_t +{ + AY31015_PE = 13, /* PE - Pin 13 - Parity error */ + AY31015_FE = 14, /* FE - Pin 14 - Framing error */ + AY31015_OR = 15, /* OR - Pin 15 - Over-run */ + AY31015_DAV = 19, /* DAV - Pin 19 - Data available */ + AY31015_TBMT = 22, /* TBMT - Pin 22 - Transmit buffer empty */ + AY31015_EOC = 24, /* EOC - Pin 24 - End of character */ + AY31015_SO = 25 /* SO - Pin 25 - Serial output */ +}; + + +/*************************************************************************** + DEVICE INTERFACE +***************************************************************************/ + +enum state_t +{ + IDLE, + START_BIT, + PROCESSING, + PARITY_BIT, + FIRST_STOP_BIT, + SECOND_STOP_BIT, + PREP_TIME +}; + +ALLOW_SAVE_TYPE(state_t); + +class ay31015_device : public device_t +{ +public: + ay31015_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + ay31015_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + ~ay31015_device() {} + + static void set_tx_clock(device_t &device, double tx_clock) { downcast<ay31015_device &>(device).m_tx_clock = tx_clock; } + static void set_rx_clock(device_t &device, double rx_clock) { downcast<ay31015_device &>(device).m_rx_clock = rx_clock; } + template<class _Object> static devcb_base &set_read_si_callback(device_t &device, _Object object) { return downcast<ay31015_device &>(device).m_read_si_cb.set_callback(object); } + template<class _Object> static devcb_base &set_write_so_callback(device_t &device, _Object object) { return downcast<ay31015_device &>(device).m_write_so_cb.set_callback(object); } + template<class _Object> static devcb_base &set_status_changed_callback(device_t &device, _Object object) { return downcast<ay31015_device &>(device).m_status_changed_cb.set_callback(object); } + + /* Set an input pin */ + void set_input_pin( ay31015_input_pin_t pin, int data ); + + + /* Get an output pin */ + int get_output_pin( ay31015_output_pin_t pin ); + + + /* Set a new transmitter clock (new_clock is in Hz) */ + void set_transmitter_clock( double new_clock ); + + + /* Set a new receiver clock (new_clock is in Hz) */ + void set_receiver_clock( double new_clock ); + + + /* Reead the received data */ + /* The received data is available on RD8-RD1 (pins 5-12) */ + UINT8 get_received_data(); + + + /* Set the transmitter buffer */ + /* The data to transmit is set on DB1-DB8 (pins 26-33) */ + void set_transmit_data( UINT8 data ); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + + virtual void internal_reset(); + + // internal state + inline UINT8 get_si(); + inline void set_so(int data); + inline int update_status_pin(UINT8 reg_bit, ay31015_output_pin_t pin); + void update_status_pins(); + void transfer_control_pins(); + inline void update_rx_timer(); + inline void update_tx_timer(); + TIMER_CALLBACK_MEMBER(rx_process); + TIMER_CALLBACK_MEMBER(tx_process); + + int m_pins[41]; + + UINT8 m_control_reg; + UINT8 m_status_reg; + UINT16 m_second_stop_bit; // 0, 8, 16 + UINT16 m_total_pulses; // bits * 16 + UINT8 m_internal_sample; + + state_t m_rx_state; + UINT8 m_rx_data; // byte being received + UINT8 m_rx_buffer; // received byte waiting to be accepted by computer + UINT8 m_rx_bit_count; + UINT8 m_rx_parity; + UINT16 m_rx_pulses; // total pulses left + double m_rx_clock; /* RCP - pin 17 */ + emu_timer *m_rx_timer; + + state_t m_tx_state; + UINT8 m_tx_data; // byte being sent + UINT8 m_tx_buffer; // next byte to send + UINT8 m_tx_parity; + UINT16 m_tx_pulses; // total pulses left + double m_tx_clock; /* TCP - pin 40 */ + emu_timer *m_tx_timer; + + devcb_read8 m_read_si_cb; /* SI - pin 20 - This will be called whenever the SI pin is sampled. Optional */ + devcb_write8 m_write_so_cb; /* SO - pin 25 - This will be called whenever data is put on the SO pin. Optional */ + devcb_write8 m_status_changed_cb; /* This will be called whenever one of the status pins may have changed. Optional */ +}; + +class ay51013_device : public ay31015_device +{ +public: + ay51013_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + +protected: + virtual void internal_reset(); + +}; + +extern const device_type AY31015; // For AY-3-1014A, AY-3-1015(D) and HD6402 variants +extern const device_type AY51013; // For AY-3-1014, AY-5-1013 and AY-6-1013 variants + + + +/*************************************************************************** + DEVICE CONFIGURATION MACROS + ***************************************************************************/ + + +#define MCFG_AY31015_TX_CLOCK(_txclk) \ + ay31015_device::set_tx_clock(*device, _txclk); + +#define MCFG_AY31015_RX_CLOCK(_rxclk) \ + ay31015_device::set_rx_clock(*device, _rxclk); + +#define MCFG_AY31015_READ_SI_CB(_devcb) \ + devcb = &ay31015_device::set_read_si_callback(*device, DEVCB_##_devcb); + +#define MCFG_AY31015_WRITE_SO_CB(_devcb) \ + devcb = &ay31015_device::set_write_so_callback(*device, DEVCB_##_devcb); + +#define MCFG_AY31015_STATUS_CHANGED_CB(_devcb) \ + devcb = &ay31015_device::set_status_changed_callback(*device, DEVCB_##_devcb); + + +#define MCFG_AY51013_TX_CLOCK(_txclk) \ + ay51013_device::set_tx_clock(*device, _txclk); + +#define MCFG_AY51013_RX_CLOCK(_rxclk) \ + ay51013_device::set_rx_clock(*device, _rxclk); + +#define MCFG_AY51013_READ_SI_CB(_devcb) \ + devcb = &ay51013_device::set_read_si_callback(*device, DEVCB_##_devcb); + +#define MCFG_AY51013_WRITE_SO_CB(_devcb) \ + devcb = &ay51013_device::set_write_so_callback(*device, DEVCB_##_devcb); + +#define MCFG_AY51013_STATUS_CHANGED_CB(_devcb) \ + devcb = &ay51013_device::set_status_changed_callback(*device, DEVCB_##_devcb); + +#endif |