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Diffstat (limited to 'src/mame/sinclair/specnext_im2.h')
-rw-r--r--src/mame/sinclair/specnext_im2.h44
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diff --git a/src/mame/sinclair/specnext_im2.h b/src/mame/sinclair/specnext_im2.h
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+// license:BSD-3-Clause
+// copyright-holders:Andrei I. Holub
+#ifndef MAME_SINCLAIR_SPECNEXT_IM2_H
+#define MAME_SINCLAIR_SPECNEXT_IM2_H
+
+#pragma once
+
+#include "machine/z80daisy.h"
+
+class specnext_im2_device : public device_t,
+ public device_z80daisy_interface
+{
+
+public:
+ specnext_im2_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
+
+ auto intr_callback() { return m_intr_cb.bind(); }
+
+ void vector_w(u8 vector) { m_vector_base = vector; }
+ void int_w(u8 vector_lo = 0xff);
+
+protected:
+ virtual void device_start() override ATTR_COLD;
+ virtual void device_reset() override ATTR_COLD;
+
+ virtual int z80daisy_irq_state() override;
+ virtual int z80daisy_irq_ack() override;
+ virtual void z80daisy_irq_reti() override;
+
+ TIMER_CALLBACK_MEMBER(irq_off);
+
+ emu_timer *m_irq_off_timer;
+ devcb_write_line m_intr_cb;
+
+private:
+ u8 m_state;
+ u8 m_vector_base;
+ u8 m_vector_lo;
+
+};
+
+DECLARE_DEVICE_TYPE(SPECNEXT_IM2, specnext_im2_device)
+
+#endif // MAME_SINCLAIR_SPECNEXT_IM2_H