summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/fb01.c
blob: 9f5588713341934836624232c5f15ec8794e353e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
// license:???
// copyright-holders:???
/***************************************************************************

  Yamaha FB-01

***************************************************************************/

#include "emu.h"
#include "cpu/z80/z80.h"
#include "sound/2151intf.h"
#include "machine/nvram.h"
#include "video/hd44780.h"
#include "machine/i8251.h"
#include "machine/clock.h"
#include "bus/midi/midi.h"
#include "fb01.lh"


class fb01_state : public driver_device
{
public:
	fb01_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_upd71051(*this, "upd71051")
		, m_midi_thru(*this, "mdthru")
		, m_ym2164_irq(CLEAR_LINE)
		, m_upd71051_txrdy(CLEAR_LINE)
		, m_upd71051_rxrdy(CLEAR_LINE)
	{
	}

	DECLARE_WRITE_LINE_MEMBER(write_usart_clock);
	DECLARE_WRITE_LINE_MEMBER(midi_in);
	DECLARE_WRITE_LINE_MEMBER(ym2164_irq_w);
	DECLARE_WRITE_LINE_MEMBER(upd71051_txrdy_w);
	DECLARE_WRITE_LINE_MEMBER(upd71051_rxrdy_w);

	virtual void machine_start();
	virtual void machine_reset();

	DECLARE_PALETTE_INIT(fb01);

private:
	required_device<z80_device> m_maincpu;
	required_device<i8251_device> m_upd71051;
	required_device<midi_port_device> m_midi_thru;
	int m_ym2164_irq;
	int m_upd71051_txrdy;
	int m_upd71051_rxrdy;

	void update_int();
};


static ADDRESS_MAP_START(fb01_mem, AS_PROGRAM, 8, fb01_state)
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8000, 0xbfff) AM_RAM AM_SHARE("nvram")  // 2 * 8KB S-RAM
ADDRESS_MAP_END


static ADDRESS_MAP_START(fb01_io, AS_IO, 8, fb01_state)
	ADDRESS_MAP_UNMAP_HIGH
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	// 00-01  YM2164
	AM_RANGE(0x00, 0x00) AM_DEVWRITE("ym2164", ym2151_device, register_w)
	AM_RANGE(0x01, 0x01) AM_DEVREADWRITE("ym2164", ym2151_device, status_r, data_w)

	// 10-11  USART uPD71051C  4MHz & 4MHz / 8
	AM_RANGE(0x10, 0x10) AM_DEVREADWRITE("upd71051", i8251_device, data_r, data_w)
	AM_RANGE(0x11, 0x11) AM_DEVREADWRITE("upd71051", i8251_device, status_r, control_w)

	// 20     PANEL SWITCH
	AM_RANGE(0x20, 0x20) AM_READ_PORT("PANEL")

	// 30-31  HD44780A
	AM_RANGE(0x30, 0x30) AM_DEVREADWRITE("hd44780", hd44780_device, control_read, control_write)
	AM_RANGE(0x31, 0x31) AM_DEVREADWRITE("hd44780", hd44780_device, data_read, data_write)
ADDRESS_MAP_END


static INPUT_PORTS_START( fb01 )
	PORT_START("PANEL")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("System Set Up")
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Inst Select")
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Inst Assign")
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Inst Function")
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Voice Function")
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Voice Select")
	PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("-1/No")
	PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("+1/Yes")
INPUT_PORTS_END


void fb01_state::machine_start()
{
	save_item(NAME(m_ym2164_irq));
	save_item(NAME(m_upd71051_txrdy));
	save_item(NAME(m_upd71051_rxrdy));
}


void fb01_state::machine_reset()
{
	m_upd71051->write_cts(0);
	m_upd71051->write_rxd(ASSERT_LINE);
}


WRITE_LINE_MEMBER(fb01_state::write_usart_clock)
{
	m_upd71051->write_txc(state);
	m_upd71051->write_rxc(state);
}


WRITE_LINE_MEMBER(fb01_state::midi_in)
{
	m_midi_thru->write_txd(state);
	m_upd71051->write_rxd(state);
}


WRITE_LINE_MEMBER(fb01_state::ym2164_irq_w)
{
	m_ym2164_irq = state;
	update_int();
}


WRITE_LINE_MEMBER(fb01_state::upd71051_txrdy_w)
{
	m_upd71051_txrdy = state;
	update_int();
}


WRITE_LINE_MEMBER(fb01_state::upd71051_rxrdy_w)
{
	m_upd71051_rxrdy = state;
	update_int();
}


void fb01_state::update_int()
{
	m_maincpu->set_input_line(0, (m_ym2164_irq || m_upd71051_txrdy || m_upd71051_rxrdy) ? ASSERT_LINE : CLEAR_LINE);
}


static HD44780_PIXEL_UPDATE(fb01_pixel_update)
{
	if ( pos < 8 && line < 2 )
	{
		bitmap.pix16(y, line*6*8 + pos*6 + x) = state;
	}
}


PALETTE_INIT_MEMBER(fb01_state, fb01)
{
	palette.set_pen_color(0, rgb_t(30, 0, 0));
	palette.set_pen_color(1, rgb_t(150, 0, 0));
}


static MACHINE_CONFIG_START( fb01, fb01_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, XTAL_12MHz/2)
	MCFG_CPU_PROGRAM_MAP(fb01_mem)
	MCFG_CPU_IO_MAP(fb01_io)

	/* video hardware */
	MCFG_SCREEN_ADD("screen", LCD)
	MCFG_SCREEN_REFRESH_RATE(50)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_SIZE(6*16, 9)
	MCFG_SCREEN_VISIBLE_AREA(0, 6*16-1, 0, 9-1)
	MCFG_DEFAULT_LAYOUT(layout_lcd)
	MCFG_SCREEN_UPDATE_DEVICE("hd44780", hd44780_device, screen_update)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_DEFAULT_LAYOUT( layout_fb01 )

	MCFG_PALETTE_ADD("palette", 2)
	MCFG_PALETTE_INIT_OWNER(fb01_state, fb01)

	MCFG_HD44780_ADD("hd44780")
	MCFG_HD44780_LCD_SIZE(2, 8)   // 2x8 displayed as 1x16
	MCFG_HD44780_PIXEL_UPDATE_CB(fb01_pixel_update)

	MCFG_DEVICE_ADD("upd71051", I8251, XTAL_4MHz)
	MCFG_I8251_RXRDY_HANDLER(WRITELINE(fb01_state, upd71051_rxrdy_w))
	MCFG_I8251_TXRDY_HANDLER(WRITELINE(fb01_state, upd71051_txrdy_w))
	MCFG_I8251_TXD_HANDLER(DEVWRITELINE("mdout", midi_port_device, write_txd))

	MCFG_DEVICE_ADD("usart_clock", CLOCK, XTAL_4MHz / 8) // 500KHz
	MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(fb01_state, write_usart_clock))

	MCFG_MIDI_PORT_ADD("mdin", midiin_slot, "midiin")
	MCFG_MIDI_RX_HANDLER(WRITELINE(fb01_state, midi_in))

	MCFG_MIDI_PORT_ADD("mdout", midiout_slot, "midiout")

	MCFG_MIDI_PORT_ADD("mdthru", midiout_slot, "midiout")

	MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
	MCFG_YM2151_ADD("ym2164", XTAL_4MHz)
	MCFG_YM2151_IRQ_HANDLER(WRITELINE(fb01_state, ym2164_irq_w))
	MCFG_SOUND_ROUTE(0, "lspeaker", 1.00)
	MCFG_SOUND_ROUTE(1, "rspeaker", 1.00)

	MCFG_NVRAM_ADD_0FILL("nvram")
MACHINE_CONFIG_END


/* ROM definition */
ROM_START( fb01 )
	ROM_REGION( 0x8000, "maincpu", 0 )
	ROM_LOAD("fb01.ic11", 0, 0x8000, CRC(7357e9a4) SHA1(049c482d6c91b7e2846757dd0f5138e0d8b687f0))
ROM_END


/* Driver */

/*    YEAR  NAME  PARENT  COMPAT   MACHINE  INPUT  INIT                  COMPANY   FULLNAME  FLAGS */
CONS( 1986, fb01, 0,      0,       fb01,    fb01,  driver_device,   0,   "Yamaha", "FB-01",  GAME_SUPPORTS_SAVE )