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Diffstat (limited to 'src/devices/bus/msx/cart/msx_audio_kb.h')
-rw-r--r--src/devices/bus/msx/cart/msx_audio_kb.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/devices/bus/msx/cart/msx_audio_kb.h b/src/devices/bus/msx/cart/msx_audio_kb.h
new file mode 100644
index 00000000000..13cf19fb70a
--- /dev/null
+++ b/src/devices/bus/msx/cart/msx_audio_kb.h
@@ -0,0 +1,51 @@
+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol
+#ifndef MAME_BUS_MSX_CART_MSX_AUDIO_KB_H
+#define MAME_BUS_MSX_CART_MSX_AUDIO_KB_H
+
+#pragma once
+
+DECLARE_DEVICE_TYPE(MSX_AUDIO_KBDC_PORT, msx_audio_kbdc_port_device)
+
+class msx_audio_kb_port_interface : public device_interface
+{
+public:
+ virtual uint8_t read() { return 0xff; }
+ virtual void write(uint8_t data) { }
+
+protected:
+ // construction/destruction
+ msx_audio_kb_port_interface(machine_config const &mconfig, device_t &device);
+};
+
+
+class msx_audio_kbdc_port_device : public device_t, public device_single_card_slot_interface<msx_audio_kb_port_interface>
+{
+public:
+ // construction/destruction
+ template <typename T>
+ msx_audio_kbdc_port_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt)
+ : msx_audio_kbdc_port_device(mconfig, tag, owner, u32(0))
+ {
+ option_reset();
+ opts(*this);
+ set_default_option(dflt);
+ set_fixed(false);
+ }
+ msx_audio_kbdc_port_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ // Physical connection simply consists of 8 input and 8 output lines split across 2 connectors
+ void write(u8 data);
+ u8 read();
+
+protected:
+ // device_t implementation
+ virtual void device_start() override;
+
+ msx_audio_kb_port_interface *m_keyboard;
+};
+
+
+void msx_audio_keyboards(device_slot_interface &device);
+
+#endif // MAME_BUS_MSX_CART_MSX_AUDIO_KB_H