lw700i: connect fdc and floppy drive, don't work yet because of dma

src/devices/machine/upd765.cpp

@@ -3352,9 +3352,15 @@ void hd63266f_device::abort_w(u8 data)
 
 int hd63266f_device::check_command()
 {
-	switch(command[0] & 0x1f) {
+	switch(command[0]) {
 		case 0x0e:
 			return C_SLEEP;
+		case 0x0b:
+		case 0x2b:
+			return command_pos == 4 ? C_SPECIFY            : C_INCOMPLETE;
+		case 0x4b:
+		case 0x6b:
+			return command_pos == 7 ? C_SPECIFY2           : C_INCOMPLETE;
 	}
 	return upd765_family_device::check_command();
 }
@@ -3370,6 +3376,12 @@ void hd63266f_device::execute_command(int cmd)
 			motor_state = 0;
 			LOGCOMMAND("sleep\n");
 			break;
+		case C_SPECIFY2:
+			spec = (command[1] << 8) | command[2];
+			LOGCOMMAND("command specify2 %02x %02x: step_rate=%d ms, head_unload=%d ms, head_load=%d ms, non_dma=%s\n",
+				command[1], command[2], 16-(command[1]>>4), (command[1]&0x0f)<<4, command[2]&0xfe, ((command[2]&1)==1)? "true":"false");
+			main_phase = PHASE_CMD;
+			break;
 		case C_SENSE_DRIVE_STATUS:
 			upd765_family_device::execute_command(cmd);
 			if(inp_cb)

src/devices/machine/upd765.h

@@ -282,6 +282,7 @@ protected:
 		C_VERSION,
 		C_SLEEP,
 		C_ABORT,
+		C_SPECIFY2,
 
 		C_INVALID,
 		C_INCOMPLETE

src/mame/brother/lw700i.cpp

@@ -19,6 +19,8 @@
 #include "machine/at28c16.h"
 #include "machine/nvram.h"
 #include "machine/timer.h"
+#include "machine/upd765.h"
+#include "imagedev/floppy.h"
 
 #include "screen.h"
 #include "speaker.h"
@@ -36,14 +38,13 @@ public:
 			m_maincpu(*this, "maincpu"),
 			m_mainram(*this, "mainram"),
 			m_screen(*this, "screen"),
+			m_fdc(*this, "fdc"),
+			m_floppy(*this, "fdc:1"),
 			m_keyboard(*this, "X%u", 0)
 	{ }
 
 	void lw700i(machine_config &config);
 
-	uint16_t status_r() { return 0x8080; }  // "ready"
-	void data_w(uint16_t data) { }
-
 	uint8_t p7_r();
 	uint8_t pb_r();
 	void pb_w(uint8_t data);
@@ -63,6 +64,8 @@ private:
 	required_device<h83003_device> m_maincpu;
 	required_shared_ptr<uint16_t> m_mainram;
 	required_device<screen_device> m_screen;
+	required_device<hd63266f_device> m_fdc;
+	required_device<floppy_connector> m_floppy;
 	required_ioport_array<9> m_keyboard;
 
 	// driver_device overrides
@@ -117,6 +120,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(lw700i_state::vbl_interrupt)
 
 void lw700i_state::machine_reset()
 {
+	m_fdc->rate_w(1);  // machine supports 250k and 500k rate, this must be controlled somewhere
 }
 
 void lw700i_state::machine_start()
@@ -157,7 +161,7 @@ void lw700i_state::main_map(address_map &map)
 {
 	map(0x000000, 0x1fffff).rom().region("maincpu", 0x0000);
 	map(0x600000, 0x63ffff).ram().share("mainram"); // 256K of main RAM
-	map(0xe00000, 0xe00001).rw(FUNC(lw700i_state::status_r), FUNC(lw700i_state::data_w));
+	map(0xe00000, 0xe00003).m(m_fdc, FUNC(hd63266f_device::map));
 	map(0xf00048, 0xf00049).ram();
 }
 
@@ -270,11 +274,17 @@ static INPUT_PORTS_START( lw700i )
 
 INPUT_PORTS_END
 
+static void lw700i_floppies(device_slot_interface &device)
+{
+	device.option_add("35hd", FLOPPY_35_HD);
+}
+
 void lw700i_state::lw700i(machine_config &config)
 {
 	H83003(config, m_maincpu, XTAL(16'000'000));
 	m_maincpu->set_addrmap(AS_PROGRAM, &lw700i_state::main_map);
 	m_maincpu->set_addrmap(AS_IO, &lw700i_state::io_map);
+	m_maincpu->tend0().set(m_fdc, FUNC(hd63266f_device::tc_line_w));
 	TIMER(config, "scantimer").configure_scanline(FUNC(lw700i_state::vbl_interrupt), "screen", 0, 1);
 
 	SCREEN(config, m_screen, SCREEN_TYPE_LCD);
@@ -283,6 +293,12 @@ void lw700i_state::lw700i(machine_config &config)
 	m_screen->set_screen_update(FUNC(lw700i_state::screen_update));
 	m_screen->set_size(640, 400);
 	m_screen->set_visarea(0, 480, 0, 128);
+
+	HD63266F(config, m_fdc, XTAL(16'000'000));
+	m_fdc->intrq_wr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ4);
+	m_fdc->drq_wr_callback().set_inputline(m_maincpu, H8_INPUT_LINE_DREQ2); // dreq2 is not connected in the hd83003
+	m_fdc->inp_rd_callback().set([this](){ return !m_floppy->get_device()->dskchg_r(); });
+	FLOPPY_CONNECTOR(config, m_floppy, lw700i_floppies, "35hd", floppy_image_device::default_pc_floppy_formats);
 }
 
 ROM_START(lw700i)