summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/amico2k.c
blob: b1a81e59d3ef2e89a5fa3db6fd6836b396abd662 (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
239
/***************************************************************************

    A.S.EL. Amico 2000

    07/2009 Skeleton driver.

    IC9 - Monitor PROM, handwritten from book listing by Davide
    IC10 - Recorder PROM, yet to be found
    IC6/IC7 - PROMs reconstructed by Luigi Serrantoni

    To Do:
     * Basically everything, in particular implement PROM (described in details
       at the link below) and i8255

    http://www.computerhistory.it/index.php?option=com_content&task=view&id=85&Itemid=117

    Pasting:
        0-F : as is
        ^ (inc) : ^
        AD : -
        DA : =
        GO : X

    Test Paste:
        =11^22^33^44^55^66^77^88^99^-0000
        Now press up-arrow to confirm the data has been entered.

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


#include "emu.h"
#include "cpu/m6502/m6502.h"
#include "machine/i8255.h"
#include "amico2k.lh"


class amico2k_state : public driver_device
{
public:
	amico2k_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_maincpu(*this, "maincpu") { }

	void machine_start();

	DECLARE_READ8_MEMBER( ppi_pa_r );
	DECLARE_WRITE8_MEMBER( ppi_pa_w );
	DECLARE_READ8_MEMBER( ppi_pb_r );
	DECLARE_WRITE8_MEMBER( ppi_pb_w );

	int m_ls145_p;
	UINT8 m_segment;

	// timers
	emu_timer *m_led_refresh_timer;
	TIMER_CALLBACK_MEMBER(led_refresh);
	required_device<cpu_device> m_maincpu;
};


static ADDRESS_MAP_START( amico2k_mem, AS_PROGRAM, 8, amico2k_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x03ff) AM_RAM
//  AM_RANGE(0x0400, 0x07ff) AM_RAM // optional expansion RAM
	AM_RANGE(0xfb00, 0xfcff) AM_ROM
	AM_RANGE(0xfd00, 0xfd03) AM_DEVREADWRITE("i8255", i8255_device, read, write)
	AM_RANGE(0xfe00, 0xffff) AM_ROM
ADDRESS_MAP_END

/* Input ports */
static INPUT_PORTS_START( amico2k )
	PORT_START("Q0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Q1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("Q2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PC") PORT_CODE(KEYCODE_P)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RUN") PORT_CODE(KEYCODE_X) PORT_CHAR('X')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR('^')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DA") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("AD") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

TIMER_CALLBACK_MEMBER(amico2k_state::led_refresh)
{
	if (m_ls145_p > 3)
	{
		output_set_digit_value(m_ls145_p - 4, m_segment);
	}
}

READ8_MEMBER( amico2k_state::ppi_pa_r )
{
	/*

	    bit     description

	    PA0     keyboard data 0
	    PA1     keyboard data 1
	    PA2     keyboard data 2
	    PA3     keyboard data 3
	    PA4     keyboard data 4
	    PA5     keyboard data 5
	    PA6     keyboard data 6
	    PA7     reg out

	*/

	switch (m_ls145_p)
	{
	case 0:     return ioport("Q0")->read();
	case 1:     return ioport("Q1")->read();
	case 2:     return ioport("Q2")->read();
	default:    return 0xff;
	}
}

WRITE8_MEMBER( amico2k_state::ppi_pa_w )
{
	/*

	    bit     description

	    PA0     LED segment A
	    PA1     LED segment B
	    PA2     LED segment C
	    PA3     LED segment D
	    PA4     LED segment E
	    PA5     LED segment F
	    PA6     LED segment G
	    PA7

	*/

	m_segment = data;
	m_led_refresh_timer->adjust(attotime::from_usec(70));
}

READ8_MEMBER( amico2k_state::ppi_pb_r )
{
	/*

	    bit     description

	    PB0     reg out
	    PB1
	    PB2
	    PB3
	    PB4
	    PB5
	    PB6
	    PB7

	*/

	return 0;
}

WRITE8_MEMBER( amico2k_state::ppi_pb_w )
{
	/*

	    bit     description

	    PB0
	    PB1     LS145 P0
	    PB2     LS145 P1
	    PB3     LS145 P2
	    PB4     LS145 P3
	    PB5     reg in
	    PB6     reg in
	    PB7     led output enable

	*/

	m_ls145_p = (data >> 1) & 0x0f;
}

void amico2k_state::machine_start()
{
	m_led_refresh_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(amico2k_state::led_refresh),this));

	// state saving
	save_item(NAME(m_ls145_p));
	save_item(NAME(m_segment));
}

static MACHINE_CONFIG_START( amico2k, amico2k_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", M6502, 1000000) /* 1MHz */
	MCFG_CPU_PROGRAM_MAP(amico2k_mem)

	/* video hardware */
	MCFG_DEFAULT_LAYOUT( layout_amico2k )

	MCFG_DEVICE_ADD("i8255", I8255, 0)
	MCFG_I8255_IN_PORTA_CB(READ8(amico2k_state, ppi_pa_r))
	MCFG_I8255_OUT_PORTA_CB(WRITE8(amico2k_state, ppi_pa_w))
	MCFG_I8255_IN_PORTB_CB(READ8(amico2k_state, ppi_pb_r))
	MCFG_I8255_OUT_PORTB_CB(WRITE8(amico2k_state, ppi_pb_w))
MACHINE_CONFIG_END


/* ROM definition */
// not sure the ROMs are loaded correctly
ROM_START( amico2k )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "prom.ic10", 0xfb00, 0x200, NO_DUMP )     // cassette recorder ROM, not published anywhere. a board is needed!
	ROM_LOAD( "prom.ic9",  0xfe00, 0x200, CRC(86449f7c) SHA1(fe7deca86e90ab89aae23f11e9dbaf343b4242dc) )

	ROM_REGION( 0x200, "proms", ROMREGION_ERASEFF )
	ROM_LOAD( "prom.ic6",  0x000, 0x100, CRC(4005f760) SHA1(7edcd85feb5a576f6da1bbb723b3cf668cf3df45) )
	ROM_LOAD( "prom.ic7",  0x100, 0x100, CRC(8785d864) SHA1(d169c3b5f5690664083030948db9f33571b08656) )
ROM_END


/* Driver */

/*    YEAR  NAME      PARENT  COMPAT MACHINE     INPUT       INIT     COMPANY   FULLNAME         FLAGS */
COMP( 1978, amico2k,  0,      0,     amico2k,    amico2k, driver_device,    0,     "A.S.E.L.", "Amico 2000", GAME_NO_SOUND_HW)