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-rw-r--r--src/devices/cpu/psx/sio.h114
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