summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/machine/m20_kbd.cpp
blob: 796dcae5a7bc3f3d70a742c1d25db927ad50898e (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
229
230
231
232
233
234
235
236
237
238
// license:BSD-3-Clause
// copyright-holders:Carl,Vas Crabb

#include "emu.h"
#include "machine/m20_kbd.h"

#include "machine/keyboard.ipp"


namespace {
/*
    TODO: dump 8048 mcu

    There seem to be a lot of guesses in this code - actual scan rate,
    FIFO length, command processing, etc. don't seem to be evidence-
    based.  The modifier handling seems very odd as it has aliasing and
    overflow all over the place.

    Layout is selected with a set of four jumpers on the keyboard MCU.
    We need to bring these out to DIP switches, work out which command
    is the layout request, and respond appropriately.

    Available layouts:
    Italian
    German
    French
    British
    USA ASCII
    Spanish
    Portuguese
    Swedish - Finnish
    Danish
    Katakana
    Yugoslavian
    Norwegian
    Greek
    Swiss - French
    Swiss - German

    The keyboard MCU drives a buzzer.  We should work out what the bell
    on/off commands are and emulate it.

    There are apparently no break codes.
    The scancodes are arranged to read in alphabetical order with the QWERTY layout.
    Modifiers apparently modify the make codes.
    We are using a matrix here that corresponds to the logical scan codes - the physical matrix apparently doesn't match this.

    00  1c  1d  1e  1f  20  21  22  23  24  25  26  27   c3     cd  ce  cf  d0
     ??   12  18  06  13  15  1a  16  0a  10  11  28  29  c2    ca  cb  cc  d1
       ??  02  14  05  07  08  09  0b  0c  0d  2a  2b  2c  c1   c7  c8  c9  d2
    ??   01  1b  19  04  17  03  0f  0e  2d  2e  2f   ??        c4  c5  c6  d3
                               c0

    Ths is the 72-key version of the keyboard.
    The katakana kayout has 75 keys, but we don't have a diagram for it.
    ?? are modifiers, which are read directly, not through the 8x9 scan matrix.
*/
// Italian layout (QZERTY typewriter)
static INPUT_PORTS_START( m20_keyboard )
	PORT_START("LINE0")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("RESET")    PORT_CODE(KEYCODE_ESC)
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_LALT)        PORT_CHAR('<') PORT_CHAR('>')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_A)           PORT_CHAR('a') PORT_CHAR('A')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_B)           PORT_CHAR('b') PORT_CHAR('B')
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_C)           PORT_CHAR('c') PORT_CHAR('C')
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_D)           PORT_CHAR('d') PORT_CHAR('D')
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_E)           PORT_CHAR('e') PORT_CHAR('E')
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_F)           PORT_CHAR('f') PORT_CHAR('F')

	PORT_START("LINE1")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_G)           PORT_CHAR('g') PORT_CHAR('G')
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_H)           PORT_CHAR('h') PORT_CHAR('H')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_I)           PORT_CHAR('i') PORT_CHAR('I')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_J)           PORT_CHAR('j') PORT_CHAR('J')
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_K)           PORT_CHAR('k') PORT_CHAR('K')
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_L)           PORT_CHAR('l') PORT_CHAR('L')
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_M)           PORT_CHAR(',') PORT_CHAR('?')
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_N)           PORT_CHAR('n') PORT_CHAR('N')

	PORT_START("LINE2")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_O)           PORT_CHAR('o') PORT_CHAR('O')
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_P)           PORT_CHAR('p') PORT_CHAR('P')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_Q)           PORT_CHAR('q') PORT_CHAR('Q')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_R)           PORT_CHAR('r') PORT_CHAR('R')
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_S)           PORT_CHAR('s') PORT_CHAR('S')
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_T)           PORT_CHAR('t') PORT_CHAR('T')
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_U)           PORT_CHAR('u') PORT_CHAR('U')
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_V)           PORT_CHAR('v') PORT_CHAR('V')

	PORT_START("LINE3")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_W)           PORT_CHAR('z') PORT_CHAR('Z')
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_X)           PORT_CHAR('x') PORT_CHAR('X')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_Y)           PORT_CHAR('y') PORT_CHAR('Y')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_Z)           PORT_CHAR('w') PORT_CHAR('W')
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_0)           PORT_CHAR(0x00e0U) PORT_CHAR('0') // a grave
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_1)           PORT_CHAR(0x00a3U) PORT_CHAR('1') // pound
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_2)           PORT_CHAR(0x00e9U) PORT_CHAR('2') // e acute
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_3)           PORT_CHAR('"') PORT_CHAR('3')

	PORT_START("LINE4")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_4)           PORT_CHAR('\'') PORT_CHAR('4')
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_5)           PORT_CHAR('(') PORT_CHAR('5')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_6)           PORT_CHAR('_') PORT_CHAR('6')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_7)           PORT_CHAR(0x00e8U) PORT_CHAR('7') // e grave
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_8)           PORT_CHAR('^') PORT_CHAR('8')
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_9)           PORT_CHAR(0x00e7U) PORT_CHAR('9') // c cedilla
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_MINUS)       PORT_CHAR(')') PORT_CHAR(0x00b0U) // degree
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_EQUALS)      PORT_CHAR('-') PORT_CHAR('+')

	PORT_START("LINE5")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_OPENBRACE)   PORT_CHAR(0x00ecU) PORT_CHAR('=') // i grave
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_CLOSEBRACE)  PORT_CHAR('$') PORT_CHAR('&')
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_COLON)       PORT_CHAR('m') PORT_CHAR('M')
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_QUOTE)       PORT_CHAR(0x00f9U) PORT_CHAR('%') // u grave
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_TILDE)       PORT_CHAR('*') PORT_CHAR(0x00a7U) // section
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_COMMA)       PORT_CHAR(';') PORT_CHAR('.')
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_STOP)        PORT_CHAR(':') PORT_CHAR('/')
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                       PORT_CODE(KEYCODE_SLASH)       PORT_CHAR(0x00f2U) PORT_CHAR('!') // o grave

	PORT_START("LINE6")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_SPACE)      PORT_CHAR(' ')
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_ENTER)      PORT_CHAR(0x000dU)
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("S1")        PORT_CODE(KEYCODE_BACKSLASH)
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("S2")        PORT_CODE(KEYCODE_BACKSPACE)
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("Keypad .")  PORT_CODE(KEYCODE_DEL_PAD)    PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_0_PAD)      PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_ENTER_PAD)  PORT_CHAR(UCHAR_MAMEKEY(00_PAD))
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_1_PAD)      PORT_CHAR(UCHAR_MAMEKEY(1_PAD))

	PORT_START("LINE7")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_2_PAD)      PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_3_PAD)      PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_4_PAD)      PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_5_PAD)      PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
	PORT_BIT(0x10,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_6_PAD)      PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
	PORT_BIT(0x20,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_7_PAD)      PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
	PORT_BIT(0x40,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_8_PAD)      PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
	PORT_BIT(0x80,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_9_PAD)      PORT_CHAR(UCHAR_MAMEKEY(9_PAD))

	PORT_START("LINE8")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_PLUS_PAD)   PORT_CHAR(UCHAR_MAMEKEY(PLUS_PAD))
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_MINUS_PAD)  PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD))
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_ASTERISK)   PORT_CHAR(UCHAR_MAMEKEY(ASTERISK))
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD)                        PORT_CODE(KEYCODE_SLASH_PAD)  PORT_CHAR(UCHAR_MAMEKEY(SLASH_PAD))
	PORT_BIT(0xf0,IP_ACTIVE_HIGH,IPT_UNUSED)

	PORT_START("MODIFIERS")
	PORT_BIT(0x01,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("COMMAND")   PORT_CODE(KEYCODE_TAB)
	PORT_BIT(0x02,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("CTRL")      PORT_CODE(KEYCODE_LCONTROL)   PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
	PORT_BIT(0x04,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("R SHIFT")   PORT_CODE(KEYCODE_RSHIFT)     PORT_CHAR(UCHAR_SHIFT_1)
	PORT_BIT(0x08,IP_ACTIVE_HIGH,IPT_KEYBOARD) PORT_NAME("L SHIFT")   PORT_CODE(KEYCODE_LSHIFT)
	PORT_BIT(0xf0,IP_ACTIVE_HIGH,IPT_UNUSED)
INPUT_PORTS_END
} // anonymous namespace


m20_keyboard_device::m20_keyboard_device(const machine_config& mconfig, const char* tag, device_t* owner, uint32_t clock)
	: buffered_rs232_device(mconfig, M20_KEYBOARD, "M20 Keyboard", tag, owner, 0, "m20_keyboard", __FILE__)
	, device_matrix_keyboard_interface(mconfig, *this, "LINE0", "LINE1", "LINE2", "LINE3", "LINE4", "LINE5", "LINE6", "LINE7", "LINE8")
	, m_modifiers(*this, "MODIFIERS")
{
}


ioport_constructor m20_keyboard_device::device_input_ports() const
{
	return INPUT_PORTS_NAME(m20_keyboard);
}


void m20_keyboard_device::device_reset()
{
	buffered_rs232_device::device_reset();

	reset_key_state();
	clear_fifo();

	set_data_frame(1, 8, PARITY_NONE, STOP_BITS_2);
	set_rate(1'200);
	receive_register_reset();
	transmit_register_reset();

	output_dcd(0);
	output_dsr(0);
	output_cts(0);
	output_rxd(1);

	start_processing(attotime::from_hz(1'200));
}


void m20_keyboard_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
	device_matrix_keyboard_interface::device_timer(timer, id, param, ptr);
	buffered_rs232_device::device_timer(timer, id, param, ptr);
}


void m20_keyboard_device::key_make(uint8_t row, uint8_t column)
{
	uint8_t const row_code(((row < 6U) ? row : (0x18U | (row - 6U))) << 3);
	uint8_t const modifiers(m_modifiers->read());
	uint8_t mod_code(0U);
	switch (modifiers)
	{
	case 0x01U: // COMMAND
		mod_code = 0x90;
		break;
	case 0x02U: // CTRL
		mod_code = 0x60;
		break;
	case 0x04U: // RSHIFT
	case 0x08U: // LSHIFT
	case 0x0cU: // LSHIFT|RSHIFT
		mod_code = 0x30;
		break;
	}
	transmit_byte((row_code | column) + mod_code);
}


void m20_keyboard_device::received_byte(uint8_t byte)
{
	switch (byte)
	{
	case 0x03U:
		transmit_byte(0x02U);
		break;
	case 0x80U:
		transmit_byte(0x80U);
		break;
	default:
		logerror("received unknown command %02x", byte);
	}
}


const device_type M20_KEYBOARD = device_creator<m20_keyboard_device>;