summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/cbmiec/cmdhd.cpp
blob: b554c9bda714489a832c5c775c4acc031a0f7167 (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
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    CMD HD hard drive emulation

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

#include "emu.h"
#include "cmdhd.h"
#include "machine/msm6242.h"



//**************************************************************************
//  MACROS / CONSTANTS
//**************************************************************************

#define M6502_TAG       "m6502"
#define M6522_1_TAG     "m6522_1"
#define M6522_2_TAG     "m6522_2"
#define I8255A_TAG      "i8255a"
#define RTC72421A_TAG   "rtc"
#define SCSIBUS_TAG     "scsi"



//**************************************************************************
//  DEVICE DEFINITIONS
//**************************************************************************

const device_type CMD_HD = device_creator<cmd_hd_device>;


//-------------------------------------------------
//  ROM( cmd_hd )
//-------------------------------------------------

ROM_START( cmd_hd )
	ROM_REGION( 0x8000, M6502_TAG, 0 )
	ROM_LOAD( "cmd_hd_bootrom_v280.bin", 0x0000, 0x8000, CRC(da68435d) SHA1(defd8bc04a52904b8a3560f11c82126619513a10) )

	ROM_REGION( 0x104, "plds", 0 )
	ROM_LOAD( "pal16l8_1", 0x000, 0x001, NO_DUMP )
	ROM_LOAD( "pal16l8_2", 0x000, 0x001, NO_DUMP )
	ROM_LOAD( "pal16l8_3", 0x000, 0x001, NO_DUMP )
ROM_END


//-------------------------------------------------
//  rom_region - device-specific ROM region
//-------------------------------------------------

const tiny_rom_entry *cmd_hd_device::device_rom_region() const
{
	return ROM_NAME( cmd_hd );
}


//-------------------------------------------------
//  ADDRESS_MAP( cmd_hd_mem )
//-------------------------------------------------

static ADDRESS_MAP_START( cmd_hd_mem, AS_PROGRAM, 8, cmd_hd_device )
	AM_RANGE(0x0000, 0x7fff) AM_RAM
	AM_RANGE(0x8000, 0xffff) AM_ROM AM_REGION(M6502_TAG, 0)
	AM_RANGE(0x8000, 0x800f) AM_MIRROR(0x1f0) AM_DEVREADWRITE(M6522_1_TAG, via6522_device, read, write)
	AM_RANGE(0x8400, 0x840f) AM_MIRROR(0x1f0) AM_DEVREADWRITE(M6522_2_TAG, via6522_device, read, write)
	AM_RANGE(0x8800, 0x8803) AM_MIRROR(0x1fc) AM_DEVREADWRITE(I8255A_TAG, i8255_device, read, write)
	AM_RANGE(0x8c00, 0x8c0f) AM_MIRROR(0x1f0) AM_DEVREADWRITE(RTC72421A_TAG, rtc72421_device, read, write)
	AM_RANGE(0x8f00, 0x8f00) AM_MIRROR(0xff) AM_WRITE(led_w)
ADDRESS_MAP_END


//-------------------------------------------------
//  MACHINE_DRIVER( cmd_hd )
//-------------------------------------------------

static MACHINE_CONFIG_FRAGMENT( cmd_hd )
	MCFG_CPU_ADD(M6502_TAG, M6502, 2000000)
	MCFG_CPU_PROGRAM_MAP(cmd_hd_mem)

	MCFG_DEVICE_ADD(M6522_1_TAG, VIA6522, 2000000)
	MCFG_DEVICE_ADD(M6522_2_TAG, VIA6522, 2000000)
	MCFG_DEVICE_ADD(I8255A_TAG, I8255A, 0)
	MCFG_DEVICE_ADD(RTC72421A_TAG, RTC72421, XTAL_32_768kHz)

	MCFG_DEVICE_ADD(SCSIBUS_TAG, SCSI_PORT, 0)
	MCFG_SCSIDEV_ADD(SCSIBUS_TAG ":" SCSI_PORT_DEVICE1, "harddisk", SCSIHD, SCSI_ID_0)
MACHINE_CONFIG_END


//-------------------------------------------------
//  machine_config_additions - device-specific
//  machine configurations
//-------------------------------------------------

machine_config_constructor cmd_hd_device::device_mconfig_additions() const
{
	return MACHINE_CONFIG_NAME( cmd_hd );
}



//**************************************************************************
//  LIVE DEVICE
//**************************************************************************

//-------------------------------------------------
//  cmd_hd_device - constructor
//-------------------------------------------------

cmd_hd_device::cmd_hd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
	: device_t(mconfig, CMD_HD, "HD", tag, owner, clock, "cmdhd", __FILE__),
		device_cbm_iec_interface(mconfig, *this),
		m_maincpu(*this, M6502_TAG),
		m_scsibus(*this, SCSIBUS_TAG)
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void cmd_hd_device::device_start()
{
}


//-------------------------------------------------
//  device_reset - device-specific reset
//-------------------------------------------------

void cmd_hd_device::device_reset()
{
}


//-------------------------------------------------
//  cbm_iec_srq -
//-------------------------------------------------

void cmd_hd_device::cbm_iec_srq(int state)
{
}


//-------------------------------------------------
//  cbm_iec_atn -
//-------------------------------------------------

void cmd_hd_device::cbm_iec_atn(int state)
{
}


//-------------------------------------------------
//  cbm_iec_data -
//-------------------------------------------------

void cmd_hd_device::cbm_iec_data(int state)
{
}


//-------------------------------------------------
//  cbm_iec_reset -
//-------------------------------------------------

void cmd_hd_device::cbm_iec_reset(int state)
{
	if (!state)
	{
		device_reset();
	}
}


//-------------------------------------------------
//  led_w -
//-------------------------------------------------

WRITE8_MEMBER( cmd_hd_device::led_w )
{
	/*

	    bit     description

	    0
	    1
	    2
	    3
	    4
	    5
	    6
	    7

	*/
}