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Diffstat (limited to 'src/mame/sinclair/specnext_im2.h')
| -rw-r--r-- | src/mame/sinclair/specnext_im2.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/mame/sinclair/specnext_im2.h b/src/mame/sinclair/specnext_im2.h new file mode 100644 index 00000000000..e788a6a8a2e --- /dev/null +++ b/src/mame/sinclair/specnext_im2.h @@ -0,0 +1,44 @@ +// 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 |
