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
|
// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
Sharp MZ-6500
****************************************************************************/
#include "emu.h"
#include "cpu/i86/i86.h"
#include "imagedev/floppy.h"
#include "machine/upd765.h"
#include "video/upd7220.h"
#include "emupal.h"
#include "screen.h"
class mz6500_state : public driver_device
{
public:
mz6500_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_hgdc(*this, "upd7220")
, m_fdc(*this, "upd765")
, m_vram(*this, "videoram")
, m_maincpu(*this, "maincpu")
, m_palette(*this, "palette")
{ }
void mz6500(machine_config &config);
private:
required_device<upd7220_device> m_hgdc;
required_device<upd765a_device> m_fdc;
u8 vram_r(offs_t offset);
void vram_w(offs_t offset, u8 data);
void fdc_irq(bool state);
void fdc_drq(bool state);
required_shared_ptr<u16> m_vram;
void machine_reset() override;
void machine_start() override;
required_device<cpu_device> m_maincpu;
required_device<palette_device> m_palette;
UPD7220_DISPLAY_PIXELS_MEMBER( hgdc_display_pixels );
void io_map(address_map &map);
void mem_map(address_map &map);
void upd7220_map(address_map &map);
};
UPD7220_DISPLAY_PIXELS_MEMBER( mz6500_state::hgdc_display_pixels )
{
const rgb_t *palette = m_palette->palette()->entry_list_raw();
int gfx[3];
u8 i,pen;
gfx[0] = m_vram[(address + 0x00000) >> 1];
gfx[1] = m_vram[(address + 0x10000) >> 1];
gfx[2] = m_vram[(address + 0x20000) >> 1];
for(i=0; i<16; i++)
{
pen = (BIT(gfx[0], i)) | (BIT(gfx[1], i) << 1) | (BIT(gfx[2], i) << 2);
bitmap.pix32(y, x + i) = palette[pen];
}
}
u8 mz6500_state::vram_r(offs_t offset)
{
return m_vram[offset >> 1] >> ((offset & 1) ? 8 : 0);
}
void mz6500_state::vram_w(offs_t offset, u8 data)
{
int mask = (offset & 1) ? 8 : 0;
offset >>= 1;
m_vram[offset] &= 0xff00 >> mask;
m_vram[offset] |= data << mask;
}
void mz6500_state::mem_map(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0x9ffff).ram();
// map(0xa0000,0xbffff) kanji/dictionary ROM
map(0xc0000, 0xeffff).rw(FUNC(mz6500_state::vram_r), FUNC(mz6500_state::vram_w));
map(0xfc000, 0xfffff).rom().region("ipl", 0);
}
void mz6500_state::io_map(address_map &map)
{
map.unmap_value_high();
// map(0x0000, 0x000f) i8237 dma
// map(0x0010, 0x001f) i8255
map(0x0020, 0x0021).mirror(0xe).m(m_fdc, FUNC(upd765a_device::map));
// map(0x0030, 0x003f) i8259 master
// map(0x0040, 0x004f) i8259 slave
// map(0x0050, 0x0050) segment byte for DMA
// map(0x0060, 0x0060) system port A
// map(0x0070, 0x0070) system port C
// map(0x00cd, 0x00cd) MZ-1R32
map(0x0100, 0x0103).mirror(0xc).rw(m_hgdc, FUNC(upd7220_device::read), FUNC(upd7220_device::write)).umask16(0x00ff);
// map(0x0110, 0x011f) video address / data registers (priority)
// map(0x0120, 0x012f) video registers
// map(0x0130, 0x013f) video register
// map(0x0140, 0x015f) palette pens
// map(0x0200, 0x020f) z80sio
// map(0x0210, 0x021f) z80ctc
// map(0x0220, 0x022f) rp5c01
// map(0x0230, 0x023f) ay-3-8912
// map(0x0240, 0x0240) z80ctc vector ack
// map(0x0250, 0x0250) z80sio vector ack
// map(0x0270, 0x0270) system port B
}
/* Input ports */
static INPUT_PORTS_START( mz6500 )
INPUT_PORTS_END
void mz6500_state::machine_start()
{
}
void mz6500_state::machine_reset()
{
}
void mz6500_state::fdc_irq(bool state)
{
//printf("%02x IRQ\n",state);
}
void mz6500_state::fdc_drq(bool state)
{
//printf("%02x DRQ\n",state);
}
static void mz6500_floppies(device_slot_interface &device)
{
device.option_add("525hd", FLOPPY_525_HD);
}
void mz6500_state::upd7220_map(address_map &map)
{
map(0x00000, 0x3ffff).ram().share("videoram");
}
void mz6500_state::mz6500(machine_config &config)
{
/* basic machine hardware */
I8086(config, m_maincpu, 8000000); //unk clock
m_maincpu->set_addrmap(AS_PROGRAM, &mz6500_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &mz6500_state::io_map);
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_screen_update("upd7220", FUNC(upd7220_device::screen_update));
screen.set_size(640, 480);
screen.set_visarea(0, 640-1, 0, 480-1);
PALETTE(config, "palette").set_entries(8);
/* Devices */
UPD7220(config, m_hgdc, 8000000/6); // unk clock
m_hgdc->set_addrmap(0, &mz6500_state::upd7220_map);
m_hgdc->set_display_pixels(FUNC(mz6500_state::hgdc_display_pixels));
UPD765A(config, m_fdc, 8000000, true, true);
FLOPPY_CONNECTOR(config, "upd765:0", mz6500_floppies, "525hd", floppy_image_device::default_floppy_formats);
FLOPPY_CONNECTOR(config, "upd765:1", mz6500_floppies, "525hd", floppy_image_device::default_floppy_formats);
}
/* ROM definition */
ROM_START( mz6500 )
ROM_REGION16_LE( 0x4000, "ipl", ROMREGION_ERASEFF )
ROM_LOAD( "ipl.rom", 0x0000, 0x4000,CRC(6c978ac4) SHA1(7872d7e6d9cda2ed9f47ed4833a5caa4dfe0e55c))
ROM_REGION16_LE( 0x40000, "dictionary", ROMREGION_ERASEFF )
ROM_LOAD( "dict.rom", 0x0000, 0x40000, CRC(2df3cfd3) SHA1(d420ede09658c2626b0bb650a063d88b1783e554))
ROM_REGION16_LE( 0x40000, "kanji", ROMREGION_ERASEFF )
ROM_LOAD( "kanji.rom", 0x0000, 0x40000, CRC(b618e25d) SHA1(1da93337fecde6c0f8a5bd68f3f0b3222a38d63e))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 198?, mz6500, 0, 0, mz6500, mz6500, mz6500_state, empty_init, "Sharp", "MZ-6500", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )
|