mame/bfm: Implement Bell Fruit 96x8 dot matrix display for Scorpion 5. (#11805)

* New driver for BFG 96x8 dot matrix vfd
* Add 96x8 dot matrix vfd to Bell Fruit Scorp5

src/mame/bfm/bfm_gu96x8m_k657c2.h

@@ -0,0 +1,77 @@
+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+#ifndef MAME_MACHINE_BFG_GU96X8M_K657C2_H
+#define MAME_MACHINE_BFG_GU96X8M_K657C2_H
+
+#pragma once
+
+
+class bfm_gu96x8m_k657c2_device : public device_t
+{
+public:
+	bfm_gu96x8m_k657c2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, uint8_t port_val)
+		: bfm_gu96x8m_k657c2_device(mconfig, tag, owner, clock)
+	{
+	}
+
+	bfm_gu96x8m_k657c2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+	void write_char(int data);
+	virtual void update_display();
+
+	void shift_data(int data);
+	void setdata(int data);
+	void set_char(int data);
+
+protected:
+	virtual void device_start() override;
+	virtual void device_reset() override;
+	virtual void device_post_load() override;
+
+private:
+	TIMER_CALLBACK_MEMBER(frame_update_callback);
+	
+	emu_timer *m_frame_timer;
+
+	output_finder<1> m_vfd_background;
+	output_finder<96 * 8> m_dotmatrix;
+	output_finder<1> m_duty;
+
+	uint8_t m_cursor_pos;
+	uint8_t m_pcursor_pos;
+	uint8_t m_window_start;
+	uint8_t m_window_end;
+	uint8_t m_window_size;
+	uint8_t m_shift_count;
+	uint8_t m_shift_data;
+	uint8_t m_brightness;
+	uint8_t m_scroll_active;
+	uint8_t m_display_mode;
+	uint8_t m_blank_control;
+	uint8_t m_extended_commands_enabled;
+	uint8_t m_graphics_commands_enabled;
+	uint8_t m_ascii_charset;
+	uint8_t m_graphics_data[96];
+	uint8_t m_graphics_start;
+	uint8_t m_graphics_end;
+	uint8_t m_cursor;
+	uint8_t m_charset_offset[128];
+	uint8_t m_chars[16];
+	uint8_t m_attributes[16];
+	uint8_t m_extra_data[7];
+	uint8_t m_extra_data_count;
+	uint8_t m_load_extra_data;
+	uint8_t m_udf[16][6];
+	uint8_t m_led_colour;
+	uint8_t m_flash_rate;
+	uint8_t m_flash_count;
+	uint8_t m_flash_blank;
+	uint8_t m_led_flash_rate;
+	uint8_t m_led_flash_count;
+	uint8_t m_led_flash_blank;
+	uint8_t m_led_flash_enabled;
+};
+
+DECLARE_DEVICE_TYPE(BFM_GU96X8M_K657C2, bfm_gu96x8m_k657c2_device)
+
+#endif // MAME_MACHINE_BFG_GU96X8M_K657C2_H

src/mame/bfm/bfm_sc4.cpp

@@ -676,7 +676,14 @@ void sc4_adder4_state::sc4_adder4_map(address_map &map)
 
 void bfm_sc45_state::bfm_sc4_reset_serial_vfd()
 {
-	m_vfd0->reset();
+	if (m_vfd0)
+	{
+		m_vfd0->reset();
+	}
+	else
+	{
+		m_vfd1->reset();
+	}
 	vfd_old_clock = false;
 }
 
@@ -711,10 +718,14 @@ void bfm_sc45_state::bfm_sc45_write_serial_vfd(bool cs, bool clock, bool data)
 						{
 							m_dm01->writedata(vfd_ser_value);
 						}
-						else
+						else if (m_vfd0)
 						{
 							m_vfd0->write_char(vfd_ser_value);
 						}
+						else
+						{
+							m_vfd1->write_char(vfd_ser_value);
+						}
 					}
 				}
 				vfd_old_clock = clock;

src/mame/bfm/bfm_sc4.h

@@ -10,6 +10,7 @@
 #include "sec.h"
 #include "machine/steppers.h" // stepper motor
 
+#include "bfm_gu96x8m_k657c2.h"
 #include "bfm_bda.h"
 
 #include "sound/ymz280b.h"
@@ -91,6 +92,7 @@ protected:
 		: driver_device(mconfig, type, tag)
 		, m_duart(*this, "duart68681")
 		, m_vfd0(*this, "vfd0")
+		, m_vfd1(*this, "vfd1")
 		, m_dm01(*this, "dm01")
 		, m_ymz(*this, "ymz")
 		, m_lamps(*this, "lamp%u", 0U)
@@ -101,6 +103,7 @@ protected:
 
 	required_device<mc68681_device> m_duart;
 	optional_device<bfm_bda_device> m_vfd0;
+	optional_device<bfm_gu96x8m_k657c2_device> m_vfd1;
 	optional_device<bfm_dm01_device> m_dm01;
 	required_device<ymz280b_device> m_ymz;
 	output_finder<0x20 * 8> m_lamps;

src/mame/bfm/bfm_sc5.cpp

@@ -145,6 +145,7 @@ PL1 = Compact Flash Slot
 #include "speaker.h"
 
 #include "bfm_sc5.lh"
+#include "bfm_sc5_gu96x8.lh"
 
 
 
@@ -351,9 +352,12 @@ void bfm_sc5_state::bfm_sc5(machine_config &config)
 	m_duart->inport_cb().set(FUNC(bfm_sc5_state::bfm_sc5_duart_input_r));
 	m_duart->outport_cb().set(FUNC(bfm_sc5_state::bfm_sc5_duart_output_w));
 
-	BFM_BDA(config, m_vfd0, 60, 0);
+	// BFM_BDA(config, m_vfd0, 60, 0);
+	BFM_GU96X8M_K657C2(config, m_vfd1, 60, 0);
 
-	config.set_default_layout(layout_bfm_sc5);
+
+	// config.set_default_layout(layout_bfm_sc5);
+	config.set_default_layout(layout_bfm_sc5_gu96x8);
 
 	YMZ280B(config, m_ymz, 16000000); // ?? Mhz
 	m_ymz->add_route(ALL_OUTPUTS, "mono", 1.0);