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-rw-r--r--src/devices/bus/pc_kbd/pc_kbdc.h143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/devices/bus/pc_kbd/pc_kbdc.h b/src/devices/bus/pc_kbd/pc_kbdc.h
new file mode 100644
index 00000000000..76b82de023f
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+++ b/src/devices/bus/pc_kbd/pc_kbdc.h
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+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
+/***************************************************************************
+
+ PC Keyboard connector interface
+
+The data line is usually sampled on changes of the clock line. If you have
+a device that changes both the data and clock lines at the same time, first
+set the data line and then set the clock line.
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __PC_KBDC_H__
+#define __PC_KBDC_H__
+
+#include "emu.h"
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_PC_KBDC_OUT_CLOCK_CB(_devcb) \
+ devcb = &pc_kbdc_device::set_out_clock_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_PC_KBDC_OUT_DATA_CB(_devcb) \
+ devcb = &pc_kbdc_device::set_out_data_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_PC_KBDC_SLOT_ADD(_kbdc_tag, _tag, _slot_intf, _def_slot) \
+ MCFG_DEVICE_ADD(_tag, PC_KBDC_SLOT, 0 ) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false) \
+ pc_kbdc_slot_device::static_set_pc_kbdc_slot(*device, owner->subdevice(_kbdc_tag) );
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+
+class pc_kbdc_slot_device : public device_t,
+ public device_slot_interface
+{
+public:
+ // construction/destruction
+ pc_kbdc_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // device-level overrides
+ virtual void device_start();
+
+ // inline configuration
+ static void static_set_pc_kbdc_slot(device_t &device, device_t *kbdc_device);
+protected:
+ // configuration
+ device_t *m_kbdc_device;
+};
+
+
+// device type definition
+extern const device_type PC_KBDC_SLOT;
+
+
+class device_pc_kbd_interface;
+
+class pc_kbdc_device : public device_t
+{
+public:
+ // construction/destruction
+ pc_kbdc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ template<class _Object> static devcb_base &set_out_clock_callback(device_t &device, _Object object) { return downcast<pc_kbdc_device &>(device).m_out_clock_cb.set_callback(object); }
+ template<class _Object> static devcb_base &set_out_data_callback(device_t &device, _Object object) { return downcast<pc_kbdc_device &>(device).m_out_data_cb.set_callback(object); }
+
+ void set_keyboard(device_pc_kbd_interface *keyboard);
+
+ int clock_signal() { return m_clock_state; }
+ int data_signal() { return m_data_state; }
+
+ DECLARE_WRITE_LINE_MEMBER( clock_write_from_mb );
+ DECLARE_WRITE_LINE_MEMBER( data_write_from_mb );
+ DECLARE_WRITE_LINE_MEMBER( clock_write_from_kb );
+ DECLARE_WRITE_LINE_MEMBER( data_write_from_kb );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ void update_clock_state();
+ void update_data_state();
+
+ devcb_write_line m_out_clock_cb;
+ devcb_write_line m_out_data_cb;
+
+ int m_clock_state;
+ int m_data_state;
+
+ int m_mb_clock_state;
+ int m_mb_data_state;
+ int m_kb_clock_state;
+ int m_kb_data_state;
+
+ device_pc_kbd_interface *m_keyboard;
+};
+
+
+// device type definition
+extern const device_type PC_KBDC;
+
+
+// ======================> device_pc_pbd_interface
+
+class device_pc_kbd_interface : public device_slot_card_interface
+{
+ friend class pc_kbdc_device;
+public:
+ // construction/destruction
+ device_pc_kbd_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_pc_kbd_interface();
+
+ device_pc_kbd_interface *next() const { return m_next; }
+
+ void set_pc_kbdc_device();
+
+ int clock_signal() { return m_pc_kbdc ? m_pc_kbdc->clock_signal() : 1; }
+ int data_signal() { return m_pc_kbdc ? m_pc_kbdc->data_signal() : 1; }
+
+ //
+ // Override the clock_write and data_write methods in a keyboard implementation
+ //
+ virtual DECLARE_WRITE_LINE_MEMBER( clock_write );
+ virtual DECLARE_WRITE_LINE_MEMBER( data_write );
+
+ // inline configuration
+ static void static_set_pc_kbdc(device_t &device, device_t *kbdc_device);
+
+ pc_kbdc_device *m_pc_kbdc;
+ const char *m_pc_kbdc_tag;
+ device_pc_kbd_interface *m_next;
+};
+
+
+
+#endif /* __PC_KBDC_H__ */