summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/rc2014/romram.cpp
blob: e0fcc03fa39b2b1e64f2d4c94a38061ce731ec2c (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
// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic
/***************************************************************************

    RC2014 ROM/RAM Module

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

#include "emu.h"
#include "romram.h"
#include "machine/intelfsh.h"

namespace {

//**************************************************************************
//  RC2014 512K RAM / 512K Flash
//  Module author: Spencer Owen
//**************************************************************************

class rom_ram_512k_device : public device_t, public device_rc2014_card_interface
{
public:
	// construction/destruction
	rom_ram_512k_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_add_mconfig(machine_config &config) override;
	virtual const tiny_rom_entry *device_rom_region() const override;

	void page_w(offs_t offset, uint8_t data) { m_page_reg[offset & 3] = data & 0x3f; }
	void page_en_w(offs_t, uint8_t data) { m_page_en = data & 1; }

private:
	template<uint8_t Bank> void mem_w(offs_t offset, uint8_t data);
	template<uint8_t Bank> uint8_t mem_r(offs_t offset);

	uint8_t m_page_reg[4];
	uint8_t m_page_en;
	std::unique_ptr<u8[]> m_ram;
	required_device<sst_39sf040_device> m_flash;
};

rom_ram_512k_device::rom_ram_512k_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
	: device_t(mconfig, RC2014_ROM_RAM_512, tag, owner, clock)
	, device_rc2014_card_interface(mconfig, *this)
	, m_page_reg{0,0,0,0}
	, m_page_en(0)
	, m_ram(nullptr)
	, m_flash(*this, "flash")
{
}

void rom_ram_512k_device::device_start()
{
	m_ram = std::make_unique<u8[]>(0x80000);
	std::fill_n(m_ram.get(), 0x80000, 0xff);
	save_pointer(NAME(m_ram), 0x80000);
	save_item(NAME(m_page_en));
	save_item(NAME(m_page_reg));

	m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x0000, 0x3fff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<0>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<0>)));
	m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x4000, 0x7fff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<1>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<1>)));
	m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x8000, 0xbfff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<2>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<2>)));
	m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0xc000, 0xffff, 0, 0, 0, read8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_r<3>)), write8sm_delegate(*this, FUNC(rom_ram_512k_device::mem_w<3>)));
}

void rom_ram_512k_device::device_reset()
{
	m_page_en = 0;
	m_page_reg[0] = 0;
	m_page_reg[1] = 0;
	m_page_reg[2] = 0;
	m_page_reg[3] = 0;

	// A15-A8 and A3 not connected
	m_bus->installer(AS_IO)->install_write_handler(0x70, 0x73, 0, 0xff08, 0, write8sm_delegate(*this, FUNC(rom_ram_512k_device::page_w)));
	// A15-A8, A3, A1 and A0 not connected
	m_bus->installer(AS_IO)->install_write_handler(0x74, 0x74, 0, 0xff0b, 0, write8sm_delegate(*this, FUNC(rom_ram_512k_device::page_en_w)));
}

void rom_ram_512k_device::device_add_mconfig(machine_config &config)
{
	SST_39SF040(config, m_flash);
}

template<uint8_t Bank>
void rom_ram_512k_device::mem_w(offs_t offset, uint8_t data)
{
	if (m_page_en)
	{
		if (m_page_reg[Bank] & 0x20) {
			m_ram[offset + ((m_page_reg[Bank] & 0x1f) << 14)] = data;
		} else {
			m_flash->write(offset + (m_page_reg[Bank] << 14), data);
		}
	}
	else
	{
		m_flash->write(offset + (Bank << 14), data);
	}
}

template<uint8_t Bank>
uint8_t rom_ram_512k_device::mem_r(offs_t offset)
{
	if (m_page_en)
	{
		if ((offset>>14 == 0) && (m_page_reg[Bank] & 0x20)) {
			return m_ram[offset + ((m_page_reg[Bank] & 0x1f) << 14)];
		} else {
			return m_flash->read(offset + (m_page_reg[Bank] << 14));
		}
	}
	return m_flash->read(offset + (Bank << 14));
}

ROM_START(rc2014_rom_ram_512k)
	ROM_REGION( 0x80000, "flash", 0)
	ROM_DEFAULT_BIOS("3.0.1")
	// Official ROMs distributed with kit
	ROM_SYSTEM_BIOS(0, "1.512k", "RomWBW RC_Std.ROM 2.9.1-pre5")
	ROMX_LOAD( "rc_1.512k.rom", 0x00000, 0x80000, CRC(f360d908) SHA1(e9c0c79f873eecff9184836025c13915630274c5), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "2.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With PPIDE")
	ROMX_LOAD( "rc_2.512k.rom", 0x00000, 0x80000, CRC(c3aefb4e) SHA1(34541851dc781033b00cdfbe445e1d91811da5c2), ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "3.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With RTC")
	ROMX_LOAD( "rc_3.512k.rom", 0x00000, 0x80000, CRC(749f7973) SHA1(2b78bb5ad0595b63c95dc58d48c5144320237362), ROM_BIOS(2))
	ROM_SYSTEM_BIOS(3, "4.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With PPIDE and RTC")
	ROMX_LOAD( "rc_4.512k.rom", 0x00000, 0x80000, CRC(fbe44292) SHA1(ae0407f0a605e9b1262ce00acf393c30fd87d1e4), ROM_BIOS(3))
	ROM_SYSTEM_BIOS(4, "5.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy")
	ROMX_LOAD( "rc_5.512k.rom", 0x00000, 0x80000, CRC(4e1d00dd) SHA1(57b21ce416a0a23e034c2efdb54f669f4b110878), ROM_BIOS(4))
	ROM_SYSTEM_BIOS(5, "6.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy and PPIDE")
	ROMX_LOAD( "rc_6.512k.rom", 0x00000, 0x80000, CRC(f2f1535e) SHA1(9121ca4246c520169cca47fda07143de8e903b3e), ROM_BIOS(5))
	ROM_SYSTEM_BIOS(6, "7.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy and RTC")
	ROMX_LOAD( "rc_7.512k.rom", 0x00000, 0x80000, CRC(57efe210) SHA1(b9ee93215d69c185d5af511a1105ee06e6474ff2), ROM_BIOS(6))
	ROM_SYSTEM_BIOS(7, "8.512k", "RomWBW RC_Std.ROM 2.9.1-pre5 With WDC Floppy, PPIDE and RTC")
	ROMX_LOAD( "rc_8.512k.rom", 0x00000, 0x80000, CRC(38cc2dfc) SHA1(6e740224276b9d0ae32bb28095c8a8ccb47c38b5), ROM_BIOS(7))
	// Official distribution of ROMWBW
	// Taken from https://github.com/wwarthen/RomWBW/releases
	ROM_SYSTEM_BIOS(8, "2.9.0", "Official RomWBW 2.9.0")
	ROMX_LOAD( "rc_std_2_9_0.rom", 0x00000, 0x80000, CRC(2045d238) SHA1(dd37c945fd531192b368d80b20b0154e6b2d2a75), ROM_BIOS(8))
	ROM_SYSTEM_BIOS(9, "2.9.1", "Official RomWBW 2.9.1")
	ROMX_LOAD( "rcz80_std_2_9_1.rom", 0x00000, 0x80000, CRC(f7c52c5f) SHA1(86a0dbbecfea118cf66f9f35a21f138ce64ae788), ROM_BIOS(9))
	ROM_SYSTEM_BIOS(10, "3.0.0", "Official RomWBW 3.0.0")
	ROMX_LOAD( "rcz80_std_3_0_0.rom", 0x00000, 0x80000, CRC(15b802f8) SHA1(0941c6b00ccdca460d64d16fb374c0380dd431ad), ROM_BIOS(10))
	ROM_SYSTEM_BIOS(11, "3.0.1", "Official RomWBW 3.0.1")
	ROMX_LOAD( "rcz80_std_3_0_1.rom", 0x00000, 0x80000, CRC(6d6b60c5) SHA1(5c642cb3113bc0a51562dc92c8b46bde414adb6c), ROM_BIOS(11))
ROM_END

const tiny_rom_entry *rom_ram_512k_device::device_rom_region() const
{
	return ROM_NAME( rc2014_rom_ram_512k );
}

//**************************************************************************
//  SC119 Z180 Memory module
//  Module author: Stephen C Cousins
//**************************************************************************

class sc119_device : public device_t, public device_rc2014_rc80_card_interface
{
public:
	// construction/destruction
	sc119_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual void device_add_mconfig(machine_config &config) override;
	virtual const tiny_rom_entry *device_rom_region() const override;

private:
	std::unique_ptr<u8[]> m_ram;
	required_device<sst_39sf040_device> m_flash;
};

sc119_device::sc119_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
	: device_t(mconfig, RC2014_SC119, tag, owner, clock)
	, device_rc2014_rc80_card_interface(mconfig, *this)
	, m_ram(nullptr)
	, m_flash(*this, "flash")
{
}

void sc119_device::device_start()
{
	m_ram = std::make_unique<u8[]>(0x80000);
	std::fill_n(m_ram.get(), 0x80000, 0xff);
	save_pointer(NAME(m_ram), 0x80000);

	// TODO: fix intelfsh
	//m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x00000, 0x7ffff, read8sm_delegate(m_flash, FUNC(intelfsh8_device::read)), write8sm_delegate(m_flash, FUNC(intelfsh8_device::write)));
	m_bus->installer(AS_PROGRAM)->install_readwrite_handler(0x00000, 0x7ffff, read8sm_delegate(m_flash, FUNC(intelfsh8_device::read_raw)), write8sm_delegate(m_flash, FUNC(intelfsh8_device::write_raw)));
	m_bus->installer(AS_PROGRAM)->install_ram(0x80000, 0xfffff, m_ram.get());
}

void sc119_device::device_add_mconfig(machine_config &config)
{
	SST_39SF040(config, m_flash);
}

ROM_START(sc119_rom)
	ROM_REGION( 0x80000, "flash", 0)
	ROM_DEFAULT_BIOS("3.0.1")
	ROM_SYSTEM_BIOS(0, "2.9.1", "Official RomWBW 2.9.1") // requires 38400 baudrate
	ROMX_LOAD( "rcz180_nat_2_9_1.rom", 0x00000, 0x80000, CRC(a538538f) SHA1(8f989e7e777bd37fe552d55bc0b14771c4cb340b), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "3.0.0", "Official RomWBW 3.0.0")
	ROMX_LOAD( "rcz180_nat_3_0_0.rom", 0x00000, 0x80000, CRC(9715e94e) SHA1(8dd7179a3bc471fb7fc1e5e2d1a930e8a858ab24), ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "3.0.1", "Official RomWBW 3.0.1")
	ROMX_LOAD( "rcz180_nat_3_0_1.rom", 0x00000, 0x80000, CRC(a6cb0d80) SHA1(cf4ad058931f0297fd2f8f81d15eb83ecbd29376), ROM_BIOS(2))
ROM_END

const tiny_rom_entry *sc119_device::device_rom_region() const
{
	return ROM_NAME( sc119_rom );
}

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

DEFINE_DEVICE_TYPE_PRIVATE(RC2014_ROM_RAM_512, device_rc2014_card_interface, rom_ram_512k_device, "rc2014_rom_ram_512k", "RC2014 512K RAM / 512K Flash")
DEFINE_DEVICE_TYPE_PRIVATE(RC2014_SC119, device_rc2014_rc80_card_interface, sc119_device, "sc119", "SC119 Z180 Memory module")