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Diffstat (limited to 'src/devices/cpu/psx/sio.h')
-rw-r--r-- | src/devices/cpu/psx/sio.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/devices/cpu/psx/sio.h b/src/devices/cpu/psx/sio.h new file mode 100644 index 00000000000..ebae81d5a93 --- /dev/null +++ b/src/devices/cpu/psx/sio.h @@ -0,0 +1,114 @@ +// license:BSD-3-Clause +// copyright-holders:smf +/* + * PlayStation Serial I/O emulator + * + * Copyright 2003-2011 smf + * + */ + +#pragma once + +#ifndef __PSXSIO_H__ +#define __PSXSIO_H__ + +#include "emu.h" + +extern const device_type PSX_SIO0; +extern const device_type PSX_SIO1; + +#define MCFG_PSX_SIO_IRQ_HANDLER(_devcb) \ + devcb = &psxsio_device::set_irq_handler(*device, DEVCB_##_devcb); + +#define MCFG_PSX_SIO_SCK_HANDLER(_devcb) \ + devcb = &psxsio_device::set_sck_handler(*device, DEVCB_##_devcb); + +#define MCFG_PSX_SIO_TXD_HANDLER(_devcb) \ + devcb = &psxsio_device::set_txd_handler(*device, DEVCB_##_devcb); + +#define MCFG_PSX_SIO_DTR_HANDLER(_devcb) \ + devcb = &psxsio_device::set_dtr_handler(*device, DEVCB_##_devcb); + +#define MCFG_PSX_SIO_RTS_HANDLER(_devcb) \ + devcb = &psxsio_device::set_rts_handler(*device, DEVCB_##_devcb); + +#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: + psxsio_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); + + // static configuration helpers + template<class _Object> static devcb_base &set_irq_handler(device_t &device, _Object object) { return downcast<psxsio_device &>(device).m_irq_handler.set_callback(object); } + template<class _Object> static devcb_base &set_sck_handler(device_t &device, _Object object) { return downcast<psxsio_device &>(device).m_sck_handler.set_callback(object); } + template<class _Object> static devcb_base &set_txd_handler(device_t &device, _Object object) { return downcast<psxsio_device &>(device).m_txd_handler.set_callback(object); } + template<class _Object> static devcb_base &set_dtr_handler(device_t &device, _Object object) { return downcast<psxsio_device &>(device).m_dtr_handler.set_callback(object); } + template<class _Object> static devcb_base &set_rts_handler(device_t &device, _Object object) { return downcast<psxsio_device &>(device).m_rts_handler.set_callback(object); } + + DECLARE_WRITE32_MEMBER( write ); + DECLARE_READ32_MEMBER( read ); + + DECLARE_WRITE_LINE_MEMBER(write_rxd); + DECLARE_WRITE_LINE_MEMBER(write_dsr); + DECLARE_WRITE_LINE_MEMBER(write_cts); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); + virtual void device_post_load(); + +private: + void sio_interrupt(); + void sio_timer_adjust(); + + UINT32 m_status; + UINT32 m_mode; + UINT32 m_control; + UINT32 m_baud; + int m_rxd; + UINT32 m_tx_data; + UINT32 m_rx_data; + UINT32 m_tx_shift; + UINT32 m_rx_shift; + UINT32 m_tx_bits; + UINT32 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 clock); +}; + +class psxsio1_device : public psxsio_device +{ +public: + psxsio1_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); +}; + +#endif |