uknc: de-skeletonize, take 2

src/mame/ussr/1515xm031.h

@@ -0,0 +1,114 @@
+// license:BSD-3-Clause
+// copyright-holders:Sergey Svishchev
+/**********************************************************************
+
+    1515XM1-031 Gate Array emulation
+
+**********************************************************************/
+
+#ifndef MAME_USSR_1515XM031_H
+#define MAME_USSR_1515XM031_H
+
+#pragma once
+
+#include "machine/keyboard.h"
+#include "machine/pdp11.h"
+#include "machine/z80daisy.h"
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> k1515xm031_device
+
+class k1515xm031_pri_device : public device_t,
+	public device_z80daisy_interface,
+	protected device_matrix_keyboard_interface<12U>
+{
+public:
+	// construction/destruction
+	k1515xm031_pri_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	auto virq_wr_callback() { return m_write_virq.bind(); }
+
+	uint16_t read(offs_t offset);
+	void write(offs_t offset, uint16_t data, uint16_t mem_mask);
+
+protected:
+	// device-level overrides
+	virtual void device_start() override ATTR_COLD;
+	virtual void device_reset() override ATTR_COLD;
+	virtual ioport_constructor device_input_ports() const override ATTR_COLD;
+
+	// device_z80daisy_interface overrides
+	virtual int z80daisy_irq_state() override;
+	virtual int z80daisy_irq_ack() override;
+	virtual void z80daisy_irq_reti() override {};
+
+	virtual void key_make(uint8_t row, uint8_t column) override;
+	virtual void key_break(uint8_t row, uint8_t column) override;
+
+private:
+	static constexpr uint16_t KBDCSR_RD = CSR_DONE | CSR_IE;
+	static constexpr uint16_t KBDCSR_WR = CSR_IE;
+
+	devcb_write_line m_write_virq;
+	line_state m_rxrdy;
+
+	uint16_t m_csr;
+	uint16_t m_buf;
+};
+
+
+class k1515xm031_sub_device : public device_t,
+	public device_z80daisy_interface
+{
+public:
+	// construction/destruction
+	k1515xm031_sub_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	auto virq_wr_callback() { return m_write_virq.bind(); }
+
+	uint16_t read(offs_t offset);
+	void write(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
+
+protected:
+	// device-level overrides
+	virtual void device_start() override ATTR_COLD;
+	virtual void device_reset() override ATTR_COLD;
+
+	// device_z80daisy_interface overrides
+	virtual int z80daisy_irq_state() override;
+	virtual int z80daisy_irq_ack() override;
+	virtual void z80daisy_irq_reti() override {};
+
+private:
+	static constexpr uint16_t TMRCSR_MODE    = 0001;
+	static constexpr uint16_t TMRCSR_FREQ    = 0002;
+	static constexpr uint16_t TMRCSR_OVF     = 0010;
+	static constexpr uint16_t TMRCSR_EIE     = 0020;
+	static constexpr uint16_t TMRCSR_EVNT    = 0040;
+	static constexpr uint16_t TMRCSR_RD      = 0377;
+	static constexpr uint16_t TMRCSR_WR      = (CSR_IE | TMRCSR_EIE | TMRCSR_FREQ | TMRCSR_MODE);
+
+	static constexpr uint16_t TMRBUF_RDWR    = 07777;
+
+	devcb_write_line m_write_virq;
+
+	line_state m_rxrdy;
+	uint16_t m_csr;
+	uint16_t m_buf;
+	uint16_t m_value;
+	uint16_t m_counter;
+
+	emu_timer *m_timer;
+	TIMER_CALLBACK_MEMBER(timer_tick);
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(K1515XM031_PRI, k1515xm031_pri_device)
+DECLARE_DEVICE_TYPE(K1515XM031_SUB, k1515xm031_sub_device)
+
+#endif // MAME_USSR_1515XM031_H