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Diffstat (limited to 'src/mame/machine/tek410x_kbd.h')
-rw-r--r--src/mame/machine/tek410x_kbd.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/mame/machine/tek410x_kbd.h b/src/mame/machine/tek410x_kbd.h
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+++ b/src/mame/machine/tek410x_kbd.h
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+
+#ifndef MAME_MACHINE_TEK410X_KEYBOARD_H
+#define MAME_MACHINE_TEK410X_KEYBOARD_H
+
+#pragma once
+
+#include "cpu/mcs48/mcs48.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> tek410x_keyboard_device
+
+class tek410x_keyboard_device : public device_t
+{
+public:
+ // device type constructor
+ tek410x_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
+
+ // callback configuration
+ auto tdata_callback() { return m_tdata_callback.bind(); }
+ auto rdata_callback() { return m_rdata_callback.bind(); }
+
+ // line inputs
+ DECLARE_WRITE_LINE_MEMBER(kdi_w);
+ DECLARE_WRITE_LINE_MEMBER(kdo_w);
+ DECLARE_WRITE_LINE_MEMBER(reset_w);
+
+protected:
+ // device-level overrides
+ virtual void device_resolve_objects() override;
+ virtual void device_start() override;
+ virtual ioport_constructor device_input_ports() const override;
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+
+private:
+ // MCU handlers
+ u8 p1_r();
+ u8 p2_r();
+ void p2_w(u8 data);
+
+ // address maps
+ void ext_map(address_map &map);
+
+ // object finders
+ required_device<mcs48_cpu_device> m_mcu;
+ required_ioport_array<12> m_key_matrix;
+ required_ioport m_config;
+
+ // output callbacks
+ devcb_write_line m_tdata_callback;
+ devcb_write_line m_rdata_callback;
+
+ // internal state
+ u8 m_select;
+ u8 m_p2_out;
+ bool m_kdi;
+ bool m_kdo;
+};
+
+// device type declaration
+DECLARE_DEVICE_TYPE(TEK410X_KEYBOARD, tek410x_keyboard_device)
+
+#endif // MAME_MACHINE_TEK410X_KEYBOARD_H