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diff --git a/src/devices/machine/genpc.h b/src/devices/machine/genpc.h
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+// license:BSD-3-Clause
+// copyright-holders:Wilbert Pol, Miodrag Milanovic
+/*****************************************************************************
+ *
+ * includes/pc.h
+ *
+ ****************************************************************************/
+
+#ifndef GENPC_H_
+#define GENPC_H_
+
+#include "machine/ins8250.h"
+#include "machine/i8255.h"
+#include "machine/am9517a.h"
+#include "bus/isa/isa.h"
+#include "bus/isa/isa_cards.h"
+#include "bus/pc_kbd/pc_kbdc.h"
+#include "machine/pic8259.h"
+#include "machine/pit8253.h"
+#include "sound/speaker.h"
+#include "imagedev/cassette.h"
+#include "machine/ram.h"
+
+#define MCFG_IBM5160_MOTHERBOARD_ADD(_tag, _cputag) \
+ MCFG_DEVICE_ADD(_tag, IBM5160_MOTHERBOARD, 0) \
+ ibm5160_mb_device::static_set_cputag(*device, _cputag);
+// ======================> ibm5160_mb_device
+class ibm5160_mb_device : public device_t
+{
+public:
+ // construction/destruction
+ ibm5160_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ // inline configuration
+ static void static_set_cputag(device_t &device, const char *tag);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const override;
+ virtual ioport_constructor device_input_ports() const override;
+
+ DECLARE_ADDRESS_MAP(map, 8);
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+ virtual void device_reset() override;
+public:
+ required_device<cpu_device> m_maincpu;
+ required_device<pic8259_device> m_pic8259;
+ required_device<am9517a_device> m_dma8237;
+ required_device<pit8253_device> m_pit8253;
+ optional_device<i8255_device> m_ppi8255;
+ required_device<speaker_sound_device> m_speaker;
+ required_device<isa8_device> m_isabus;
+ optional_device<pc_kbdc_device> m_pc_kbdc;
+ required_device<ram_device> m_ram;
+
+ /* U73 is an LS74 - dual flip flop */
+ /* Q2 is set by OUT1 from the 8253 and goes to DRQ1 on the 8237 */
+ UINT8 m_u73_q2;
+ UINT8 m_out1;
+ int m_dma_channel;
+ UINT8 m_dma_offset[4];
+ UINT8 m_pc_spkrdata;
+ UINT8 m_pit_out2;
+ bool m_cur_eop;
+
+ UINT8 m_nmi_enabled;
+
+ int m_ppi_portc_switch_high;
+ int m_ppi_speaker;
+ int m_ppi_keyboard_clear;
+ UINT8 m_ppi_keyb_clock;
+ UINT8 m_ppi_portb;
+ UINT8 m_ppi_clock_signal;
+ UINT8 m_ppi_data_signal;
+ UINT8 m_ppi_shift_register;
+ UINT8 m_ppi_shift_enable;
+
+ // interface to the keyboard
+ DECLARE_WRITE_LINE_MEMBER( keyboard_clock_w );
+ DECLARE_WRITE_LINE_MEMBER( keyboard_data_w );
+
+ DECLARE_READ8_MEMBER ( pc_ppi_porta_r );
+ DECLARE_READ8_MEMBER ( pc_ppi_portc_r );
+ DECLARE_WRITE8_MEMBER( pc_ppi_portb_w );
+
+ DECLARE_WRITE_LINE_MEMBER( pc_pit8253_out1_changed );
+ DECLARE_WRITE_LINE_MEMBER( pc_pit8253_out2_changed );
+
+ DECLARE_WRITE_LINE_MEMBER( pc_dma_hrq_changed );
+ DECLARE_WRITE_LINE_MEMBER( pc_dma8237_out_eop );
+ DECLARE_READ8_MEMBER( pc_dma_read_byte );
+ DECLARE_WRITE8_MEMBER( pc_dma_write_byte );
+ DECLARE_READ8_MEMBER( pc_dma8237_1_dack_r );
+ DECLARE_READ8_MEMBER( pc_dma8237_2_dack_r );
+ DECLARE_READ8_MEMBER( pc_dma8237_3_dack_r );
+ DECLARE_WRITE8_MEMBER( pc_dma8237_1_dack_w );
+ DECLARE_WRITE8_MEMBER( pc_dma8237_2_dack_w );
+ DECLARE_WRITE8_MEMBER( pc_dma8237_3_dack_w );
+ DECLARE_WRITE8_MEMBER( pc_dma8237_0_dack_w );
+ DECLARE_WRITE_LINE_MEMBER( pc_dack0_w );
+ DECLARE_WRITE_LINE_MEMBER( pc_dack1_w );
+ DECLARE_WRITE_LINE_MEMBER( pc_dack2_w );
+ DECLARE_WRITE_LINE_MEMBER( pc_dack3_w );
+
+ DECLARE_WRITE_LINE_MEMBER( pc_speaker_set_spkrdata );
+
+ DECLARE_WRITE8_MEMBER(pc_page_w);
+ DECLARE_WRITE8_MEMBER(nmi_enable_w);
+
+ const char *m_cputag;
+
+private:
+ void pc_select_dma_channel(int channel, bool state);
+};
+
+
+// device type definition
+extern const device_type IBM5160_MOTHERBOARD;
+
+
+#define MCFG_IBM5150_MOTHERBOARD_ADD(_tag, _cputag) \
+ MCFG_DEVICE_ADD(_tag, IBM5150_MOTHERBOARD, 0) \
+ ibm5150_mb_device::static_set_cputag(*device, _cputag);
+
+// ======================> ibm5150_mb_device
+class ibm5150_mb_device : public ibm5160_mb_device
+{
+public:
+ // construction/destruction
+ ibm5150_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const override;
+
+ DECLARE_WRITE_LINE_MEMBER( keyboard_clock_w );
+
+protected:
+ // device-level overrides
+
+ required_device<cassette_image_device> m_cassette;
+public:
+ DECLARE_READ8_MEMBER ( pc_ppi_porta_r );
+ DECLARE_READ8_MEMBER ( pc_ppi_portc_r );
+ DECLARE_WRITE8_MEMBER( pc_ppi_portb_w );
+};
+
+
+// device type definition
+extern const device_type IBM5150_MOTHERBOARD;
+
+
+#define MCFG_EC1841_MOTHERBOARD_ADD(_tag, _cputag) \
+ MCFG_DEVICE_ADD(_tag, EC1841_MOTHERBOARD, 0) \
+ ec1841_mb_device::static_set_cputag(*device, _cputag);
+
+class ec1841_mb_device : public ibm5160_mb_device
+{
+public:
+ // construction/destruction
+ ec1841_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const override;
+ virtual ioport_constructor device_input_ports() const override;
+ virtual void device_start() override;
+
+public:
+ DECLARE_READ8_MEMBER ( pc_ppi_portc_r );
+ DECLARE_WRITE8_MEMBER( pc_ppi_portb_w );
+
+ DECLARE_WRITE_LINE_MEMBER( keyboard_clock_w );
+};
+
+extern const device_type EC1841_MOTHERBOARD;
+
+#define MCFG_PCNOPPI_MOTHERBOARD_ADD(_tag, _cputag) \
+ MCFG_DEVICE_ADD(_tag, PCNOPPI_MOTHERBOARD, 0) \
+ pc_noppi_mb_device::static_set_cputag(*device, _cputag);
+
+class pc_noppi_mb_device : public ibm5160_mb_device
+{
+public:
+ // construction/destruction
+ pc_noppi_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+ UINT8 pit_out2() { return m_pit_out2; } // helper for near-clones with multifunction ics instead of 8255s
+
+ DECLARE_ADDRESS_MAP(map, 8);
+
+ virtual machine_config_constructor device_mconfig_additions() const override;
+ virtual ioport_constructor device_input_ports() const override;
+};
+
+extern const device_type PCNOPPI_MOTHERBOARD;
+
+#endif /* GENPC_H_ */