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-rw-r--r--src/mame/machine/vt1682_io.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/mame/machine/vt1682_io.h b/src/mame/machine/vt1682_io.h
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index 00000000000..f4e955f9f68
--- /dev/null
+++ b/src/mame/machine/vt1682_io.h
@@ -0,0 +1,55 @@
+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+
+#ifndef MAME_MACHINE_VT1682_IO_H
+#define MAME_MACHINE_VT1682_IO_H
+
+#pragma once
+
+DECLARE_DEVICE_TYPE(VT_VT1682_IO, vrt_vt1682_io_device)
+
+class vrt_vt1682_io_device : public device_t
+{
+public:
+ // construction/destruction
+ vrt_vt1682_io_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ auto porta_out() { return m_porta_out.bind(); }
+ auto portb_out() { return m_portb_out.bind(); }
+ auto portc_out() { return m_portc_out.bind(); }
+ auto portd_out() { return m_portd_out.bind(); }
+ auto porta_in() { return m_porta_in.bind(); }
+ auto portb_in() { return m_portb_in.bind(); }
+ auto portc_in() { return m_portc_in.bind(); }
+ auto portd_in() { return m_portd_in.bind(); }
+
+
+ DECLARE_READ8_MEMBER(vt1682_210e_io_ab_r);
+ DECLARE_READ8_MEMBER(vt1682_210f_io_cd_r);
+
+ DECLARE_WRITE8_MEMBER(vt1682_210e_io_ab_w);
+ DECLARE_WRITE8_MEMBER(vt1682_210f_io_cd_w);
+
+ DECLARE_READ8_MEMBER(vt1682_210d_ioconfig_r);
+ DECLARE_WRITE8_MEMBER(vt1682_210d_ioconfig_w);
+
+
+protected:
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+private:
+ uint8_t m_210d_ioconfig;
+
+ // actually 4-bit ports
+ devcb_write8 m_porta_out;
+ devcb_write8 m_portb_out;
+ devcb_write8 m_portc_out;
+ devcb_write8 m_portd_out;
+ devcb_read8 m_porta_in;
+ devcb_read8 m_portb_in;
+ devcb_read8 m_portc_in;
+ devcb_read8 m_portd_in;
+};
+
+#endif // MAME_MACHINE_VT1682_IO_H