summaryrefslogtreecommitdiffstatshomepage
path: root/src/mess/drivers/ts802.c
blob: af7a9a5372680a2b4a12457eafeaac950e18ed9e (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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
/***************************************************************************

    Skeleton driver for Televideo TS802

    2012-11-06 Skeleton
    2014-02-07 Started adding devices

    Status:
    - TS802:  After 5 seconds, Slowly prints dots
    - TS802H: After 5 seconds, type in any 5 characters, then you get a prompt.

    TODO:
    - Almost everything

    Technical manual at:
    http://bitsavers.org/pdf/televideo/TS800A_TS802_TS802H_Maintenance_Manual_1982.pdf

    includes in-depth discussion of the inner workings of the WD1000 HDD controller.

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/z80/z80daisy.h"
#include "machine/terminal.h"
#include "machine/z80dma.h"
#include "machine/z80ctc.h"
//#include "machine/z80sio.h"
#include "machine/z80dart.h"
#include "machine/wd_fdc.h"


class ts802_state : public driver_device
{
public:
	ts802_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_terminal(*this, TERMINAL_TAG)
	{ }

	DECLARE_DRIVER_INIT(ts802);
	DECLARE_MACHINE_RESET(ts802);
	DECLARE_READ8_MEMBER(port00_r) { return 0x80; };
	DECLARE_READ8_MEMBER(port0c_r) { return 1; };
	DECLARE_READ8_MEMBER(port0e_r) { return 0; };
	DECLARE_READ8_MEMBER(port0f_r) { return (m_term_data) ? 5 : 4; };
	DECLARE_READ8_MEMBER(port0d_r);
	DECLARE_WRITE8_MEMBER(port04_w);
	DECLARE_WRITE8_MEMBER(port18_w);
	DECLARE_WRITE8_MEMBER(port80_w);
	DECLARE_READ8_MEMBER(memory_read_byte);
	DECLARE_WRITE8_MEMBER(memory_write_byte);
	DECLARE_READ8_MEMBER(io_read_byte);
	DECLARE_WRITE8_MEMBER(io_write_byte);
	DECLARE_WRITE8_MEMBER( kbd_put );
private:
	UINT8 m_term_data;
	address_space *m_mem;
	address_space *m_io;
	required_device<cpu_device> m_maincpu;
	required_device<generic_terminal_device> m_terminal;
};

static ADDRESS_MAP_START(ts802_mem, AS_PROGRAM, 8, ts802_state)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x0fff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
	AM_RANGE(0x1000, 0xffff) AM_RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START(ts802_io, AS_IO, 8, ts802_state)
	//ADDRESS_MAP_UNMAP_HIGH
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x03) AM_READ(port00_r)  // DIP switches
	// 04 - written once after OS boot to bank in RAM from 0000-3FFF instead of ROM.  4000-FFFF is always RAM.
	AM_RANGE(0x04, 0x07) AM_WRITE(port04_w)
	// 08-0B: Z80 CTC
	AM_RANGE(0x08, 0x0b) AM_DEVREADWRITE("z80ctc", z80ctc_device, read, write)
	// 0C-0F: Z80 SIO #1
	//AM_RANGE(0x0c, 0x0f) AM_DEVREADWRITE("z80dart1", z80dart_device, ba_cd_r, ba_cd_w)
	AM_RANGE(0x0c, 0x0c) AM_READ(port0c_r)
	AM_RANGE(0x0d, 0x0d) AM_READ(port0d_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
	AM_RANGE(0x0e, 0x0e) AM_READ(port0e_r)
	AM_RANGE(0x0f, 0x0f) AM_READ(port0f_r)
	// 10: Z80 DMA
	AM_RANGE(0x10, 0x13) AM_DEVREADWRITE("z80dma", z80dma_device, read, write)
	// 14-17: WD 1793
	AM_RANGE(0x14, 0x17) AM_DEVREADWRITE("fdc", fd1793_t, read, write)
	// 18: floppy misc.
	AM_RANGE(0x18, 0x1c) AM_WRITE(port18_w)
	// 20-23: Z80 SIO #2
	AM_RANGE(0x20, 0x23) AM_DEVREADWRITE("z80dart2", z80dart_device, ba_cd_r, ba_cd_w)
	// 48-4F: WD1000 harddisk controller
	// 80: LEDs
	AM_RANGE(0x80, 0x80) AM_WRITE(port80_w)
ADDRESS_MAP_END


/* Input ports */
static INPUT_PORTS_START( ts802 )
INPUT_PORTS_END

WRITE8_MEMBER( ts802_state::port04_w )
{
	membank("bankr0")->set_entry(1);
}

WRITE8_MEMBER( ts802_state::port18_w )
{
}

WRITE8_MEMBER( ts802_state::port80_w )
{
}

READ8_MEMBER( ts802_state::memory_read_byte )
{
	return m_mem->read_byte(offset);
}

WRITE8_MEMBER( ts802_state::memory_write_byte )
{
	m_mem->write_byte(offset, data);
}

READ8_MEMBER( ts802_state::io_read_byte )
{
	return m_io->read_byte(offset);
}

WRITE8_MEMBER( ts802_state::io_write_byte )
{
	m_io->write_byte(offset, data);
}

static Z80DMA_INTERFACE( dma_intf )
{
	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_HALT), // BUSRQ?
	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0),
	DEVCB_NULL,
	DEVCB_DRIVER_MEMBER(ts802_state, memory_read_byte),
	DEVCB_DRIVER_MEMBER(ts802_state, memory_write_byte),
	DEVCB_DRIVER_MEMBER(ts802_state, io_read_byte),
	DEVCB_DRIVER_MEMBER(ts802_state, io_write_byte),

};

static Z80DART_INTERFACE( dart0_intf )
{
	0, 0, 0, 0,

	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, dtr_w),
	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
	DEVCB_NULL,
	DEVCB_NULL,

	DEVCB_NULL, // out data
	DEVCB_NULL, // DTR
	DEVCB_NULL, // RTS
	DEVCB_NULL, // WRDY
	DEVCB_NULL, // SYNC

	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0),
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL
};

static Z80DART_INTERFACE( dart1_intf )
{
	0, 0, 0, 0,

	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", serial_port_device, tx),
	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, dtr_w),
	DEVCB_NULL,  //DEVCB_DEVICE_LINE_MEMBER("rs232", rs232_port_device, rts_w),
	DEVCB_NULL,
	DEVCB_NULL,

	DEVCB_NULL, // out data
	DEVCB_NULL, // DTR
	DEVCB_NULL, // RTS
	DEVCB_NULL, // WRDY
	DEVCB_NULL, // SYNC

	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0),
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL
};

static Z80CTC_INTERFACE( ctc_intf )
{
	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0), /* interrupt handler */
	DEVCB_NULL,     /* ZC/TO0 callback - */
	DEVCB_NULL,     /* ZC/TO1 callback - */
	DEVCB_NULL      /* ZC/TO2 callback - */
};

static SLOT_INTERFACE_START( ts802_floppies )
	SLOT_INTERFACE( "525dd", FLOPPY_525_DD )
SLOT_INTERFACE_END

MACHINE_RESET_MEMBER( ts802_state, ts802 )
{
	membank("bankr0")->set_entry(0); // point at rom
	membank("bankw0")->set_entry(0); // always write to ram
}

READ8_MEMBER( ts802_state::port0d_r )
{
	UINT8 ret = m_term_data;
	m_term_data = 0;
	return ret;
}

WRITE8_MEMBER( ts802_state::kbd_put )
{
	m_term_data = data;
}

static GENERIC_TERMINAL_INTERFACE( terminal_intf )
{
	DEVCB_DRIVER_MEMBER(ts802_state, kbd_put)
};

// not correct
static const z80_daisy_config daisy_chain_intf[] =
{
	{ "z80dart1" },
	{ "z80dart2" },
	{ "z80dma" },
	{ "z80ctc" },
	{ NULL }
};

DRIVER_INIT_MEMBER( ts802_state, ts802 )
{
	m_mem = &m_maincpu->space(AS_PROGRAM);
	m_io = &m_maincpu->space(AS_IO);

	UINT8 *main = memregion("maincpu")->base();

	membank("bankr0")->configure_entry(1, &main[0x0000]);
	membank("bankr0")->configure_entry(0, &main[0x10000]);
	membank("bankw0")->configure_entry(0, &main[0x0000]);
}

static MACHINE_CONFIG_START( ts802, ts802_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 4)
	MCFG_CPU_PROGRAM_MAP(ts802_mem)
	MCFG_CPU_IO_MAP(ts802_io)
	//MCFG_CPU_CONFIG(daisy_chain_intf) // causes problems
	MCFG_MACHINE_RESET_OVERRIDE(ts802_state, ts802)

	/* Devices */
	MCFG_GENERIC_TERMINAL_ADD(TERMINAL_TAG, terminal_intf)
	MCFG_Z80DMA_ADD("z80dma", XTAL_16MHz / 4, dma_intf)
	MCFG_Z80DART_ADD("z80dart1", XTAL_16MHz / 4, dart0_intf )
	MCFG_Z80DART_ADD("z80dart2", XTAL_16MHz / 4, dart1_intf )
	MCFG_Z80CTC_ADD("z80ctc", XTAL_16MHz / 4, ctc_intf)
	MCFG_FD1793x_ADD("fdc", XTAL_4MHz / 2)                  // unknown clock
	MCFG_FLOPPY_DRIVE_ADD("fdc:0", ts802_floppies, "525dd", floppy_image_device::default_floppy_formats)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( ts802 )
	ROM_REGION(0x11000, "maincpu", 0)
	ROM_LOAD( "ts802.rom", 0x10000, 0x1000, CRC(60bd086a) SHA1(82c5b60223e0d895683d3592a56684ef2dabfba6) )
ROM_END

ROM_START( ts802h )
	ROM_REGION(0x11000, "maincpu", 0)
	ROM_LOAD( "8000050 050 2732", 0x10000, 0x1000, CRC(7054f384) SHA1(cf0a01a32283272532ed4890c3a3c2082f1618bf) )

	ROM_REGION(0x2000, "roms", 0) // not Z80 code
	ROM_LOAD( "i800000 047d.a53", 0x0000, 0x1000, CRC(94bfcbc1) SHA1(87c5f8898b0041d012e142ee7f559cb8a90f4dc1) )
	ROM_LOAD( "a64",              0x1000, 0x1000, CRC(41b5feda) SHA1(c9435a97c032ffe457bdb84d5dde8ecf3677b56c) )

	ROM_REGION(0x1000, "chargen", 0)
	ROM_LOAD( "800000-003a.a68",  0x0000, 0x0800, CRC(24eeb74d) SHA1(77900937f1492b4c5a70ba3aac55da322d403fbd) )
	ROM_LOAD( "800000-002a.a67",  0x0800, 0x0800, CRC(4b6c6e29) SHA1(c236e4625bc16062154cbebc4dbc8d62183ef9ab) )
ROM_END

/* Driver */

/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT  STATE         INIT      COMPANY    FULLNAME       FLAGS */
COMP( 1982, ts802,   0,       0,     ts802,     ts802, ts802_state,  ts802,  "Televideo", "TS802",  GAME_IS_SKELETON )
COMP( 1982, ts802h,  ts802,   0,     ts802,     ts802, ts802_state,  ts802,  "Televideo", "TS802H", GAME_IS_SKELETON )