summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/machine/8042kbdc.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/machine/8042kbdc.h')
-rw-r--r--src/devices/machine/8042kbdc.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/devices/machine/8042kbdc.h b/src/devices/machine/8042kbdc.h
new file mode 100644
index 00000000000..b8d9c4e22fd
--- /dev/null
+++ b/src/devices/machine/8042kbdc.h
@@ -0,0 +1,127 @@
+// license:BSD-3-Clause
+// copyright-holders:Peter Trauner
+/**********************************************************************
+
+ 8042 Keyboard Controller Emulation
+
+ This is the keyboard controller used in the IBM AT and further
+ models. It is a popular controller for PC style keyboards
+
+**********************************************************************/
+
+#ifndef KBDC8042_H
+#define KBDC8042_H
+
+#include "emu.h"
+#include "machine/pckeybrd.h"
+
+enum kbdc8042_type_t
+{
+ KBDC8042_STANDARD,
+ KBDC8042_PS2, /* another timing of integrated controller */
+ KBDC8042_AT386 /* hack for at386 driver */
+};
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_KBDC8042_KEYBOARD_TYPE(_kbdt) \
+ kbdc8042_device::set_keyboard_type(*device, _kbdt);
+
+#define MCFG_KBDC8042_SYSTEM_RESET_CB(_devcb) \
+ devcb = &kbdc8042_device::set_system_reset_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_KBDC8042_GATE_A20_CB(_devcb) \
+ devcb = &kbdc8042_device::set_gate_a20_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_KBDC8042_INPUT_BUFFER_FULL_CB(_devcb) \
+ devcb = &kbdc8042_device::set_input_buffer_full_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_KBDC8042_OUTPUT_BUFFER_EMPTY_CB(_devcb) \
+ devcb = &kbdc8042_device::set_output_buffer_empty_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_KBDC8042_SPEAKER_CB(_devcb) \
+ devcb = &kbdc8042_device::set_speaker_callback(*device, DEVCB_##_devcb);
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> kbdc8042_device
+
+class kbdc8042_device : public device_t
+{
+public:
+ // construction/destruction
+ kbdc8042_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ static void set_keyboard_type(device_t &device, kbdc8042_type_t keybtype) { downcast<kbdc8042_device &>(device).m_keybtype = keybtype; }
+ template<class _Object> static devcb_base &set_system_reset_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_system_reset_cb.set_callback(object); }
+ template<class _Object> static devcb_base &set_gate_a20_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_gate_a20_cb.set_callback(object); }
+ template<class _Object> static devcb_base &set_input_buffer_full_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_input_buffer_full_cb.set_callback(object); }
+ template<class _Object> static devcb_base &set_output_buffer_empty_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_output_buffer_empty_cb.set_callback(object); }
+ template<class _Object> static devcb_base &set_speaker_callback(device_t &device, _Object object) { return downcast<kbdc8042_device &>(device).m_speaker_cb.set_callback(object); }
+
+ DECLARE_READ8_MEMBER( data_r );
+ DECLARE_WRITE8_MEMBER( data_w );
+
+ DECLARE_WRITE_LINE_MEMBER( write_out2 );
+ DECLARE_WRITE_LINE_MEMBER( keyboard_w );
+
+ void at_8042_set_outport(UINT8 data, int initial);
+ TIMER_CALLBACK_MEMBER( kbdc8042_clr_int );
+ void at_8042_receive(UINT8 data);
+ void at_8042_check_keyboard();
+ void at_8042_clear_keyboard_received();
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ UINT8 m_inport, m_outport, m_data, m_command;
+
+ struct {
+ int received;
+ int on;
+ } m_keyboard;
+ struct {
+ int received;
+ int on;
+ } m_mouse;
+
+ int m_last_write_to_control;
+ int m_sending;
+ int m_send_to_mouse;
+
+ int m_operation_write_state;
+ int m_status_read_mode;
+
+ int m_speaker;
+ int m_out2;
+
+ /* temporary hack */
+ int m_offset1;
+
+ int m_poll_delay;
+
+ required_device<at_keyboard_device> m_keyboard_dev;
+
+ kbdc8042_type_t m_keybtype;
+
+ devcb_write_line m_system_reset_cb;
+ devcb_write_line m_gate_a20_cb;
+ devcb_write_line m_input_buffer_full_cb;
+ devcb_write_line m_output_buffer_empty_cb;
+
+ devcb_write8 m_speaker_cb;
+};
+
+// device type definition
+extern const device_type KBDC8042;
+
+
+#endif /* KBDC8042_H */