// license:BSD-3-Clause // copyright-holders:smf /* * PlayStation Serial I/O emulator * * Copyright 2003-2011 smf * */ #ifndef MAME_CPU_PSX_SIO_H #define MAME_CPU_PSX_SIO_H #pragma once DECLARE_DEVICE_TYPE(PSX_SIO0, psxsio0_device) DECLARE_DEVICE_TYPE(PSX_SIO1, psxsio1_device) #define SIO_BUF_SIZE ( 8 ) #define SIO_STATUS_TX_RDY ( 1 << 0 ) #define SIO_STATUS_RX_RDY ( 1 << 1 ) #define SIO_STATUS_TX_EMPTY ( 1 << 2 ) #define SIO_STATUS_OVERRUN ( 1 << 4 ) #define SIO_STATUS_DSR ( 1 << 7 ) #define SIO_STATUS_IRQ ( 1 << 9 ) #define SIO_CONTROL_TX_ENA ( 1 << 0 ) #define SIO_CONTROL_IACK ( 1 << 4 ) #define SIO_CONTROL_RESET ( 1 << 6 ) #define SIO_CONTROL_TX_IENA ( 1 << 10 ) #define SIO_CONTROL_RX_IENA ( 1 << 11 ) #define SIO_CONTROL_DSR_IENA ( 1 << 12 ) #define SIO_CONTROL_DTR ( 1 << 13 ) class psxsio_device : public device_t { public: // configuration helpers auto irq_handler() { return m_irq_handler.bind(); } auto sck_handler() { return m_sck_handler.bind(); } auto txd_handler() { return m_txd_handler.bind(); } auto dtr_handler() { return m_dtr_handler.bind(); } auto rts_handler() { return m_rts_handler.bind(); } DECLARE_WRITE32_MEMBER( write ); DECLARE_READ32_MEMBER( read ); DECLARE_WRITE_LINE_MEMBER(write_rxd); DECLARE_WRITE_LINE_MEMBER(write_dsr); protected: psxsio_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_start() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; virtual void device_post_load() override; private: void sio_interrupt(); void sio_timer_adjust(); uint32_t m_status; uint32_t m_mode; uint32_t m_control; uint32_t m_baud; int m_rxd; uint32_t m_tx_data; uint32_t m_rx_data; uint32_t m_tx_shift; uint32_t m_rx_shift; uint32_t m_tx_bits; uint32_t m_rx_bits; emu_timer *m_timer; devcb_write_line m_irq_handler; devcb_write_line m_sck_handler; devcb_write_line m_txd_handler; devcb_write_line m_dtr_handler; devcb_write_line m_rts_handler; }; class psxsio0_device : public psxsio_device { public: psxsio0_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; class psxsio1_device : public psxsio_device { public: psxsio1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; #endif // MAME_CPU_PSX_SIO_H