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r31779 Tuesday 26th August, 2014 at 05:58:29 UTC by Fabio Priuli
(MESS) a7800: added Yamaha 2151 emulation to the XM expansion board, thanks to info from tep392. nw. Also removed from the softlist the Donkey Kong XM Enhanced version which had been hacked to work on ProSystem emulator and fails to save hiscores with correct HSC emulation (it remains available the correct version which saves fine both in MESS and in the real hardware).

[hash]	a7800.xml
[src/emu/bus/a7800]	xboard.c xboard.h

trunk/src/emu/bus/a7800/xboard.c

r31778	r31779
37	37
38	38	TODO:
39	39	- verify what happens when 2 POKEYs are present
40		- understand why high score in XM is not written to NVRAM
41		- add Yamaha YM2151 when more clear specs are available
42	40
43	41	***********************************************************************************************************/
44	42
r31778	r31779
73	71
74	72
75	73	a78_xm_device::a78_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
76		: a78_xboard_device(mconfig, A78_XM, "Atari 7800 XM expansion module", tag, owner, clock, "a78_xm", __FILE__)
	74	: a78_xboard_device(mconfig, A78_XM, "Atari 7800 XM expansion module", tag, owner, clock, "a78_xm", __FILE__),
	75	m_ym(*this, "xm_ym2151")
77	76	{
78	77	}
79	78
r31778	r31779
90	89	m_ram_bank = 0;
91	90	}
92	91
	92	void a78_xm_device::device_start()
	93	{
	94	save_item(NAME(m_reg));
	95	save_item(NAME(m_ram_bank));
	96	save_item(NAME(m_ym_enabled));
	97	}
93	98
	99	void a78_xm_device::device_reset()
	100	{
	101	m_reg = 0;
	102	m_ram_bank = 0;
	103	m_ym_enabled = 0;
	104	}
	105
	106
94	107	static MACHINE_CONFIG_FRAGMENT( a78_xb )
95	108	MCFG_A78_CARTRIDGE_ADD("xb_slot", a7800_cart, NULL)
96	109
r31778	r31779
100	113	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
101	114	MACHINE_CONFIG_END
102	115
	116	static MACHINE_CONFIG_FRAGMENT( a78_xm )
	117	MCFG_A78_CARTRIDGE_ADD("xb_slot", a7800_cart, NULL)
	118
	119	MCFG_SPEAKER_STANDARD_MONO("xb_speaker")
	120
	121	MCFG_SOUND_ADD("xb_pokey", POKEY, XTAL_14_31818MHz/8)
	122	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
	123
	124	MCFG_SOUND_ADD("xm_ym2151", YM2151, XTAL_14_31818MHz/8)
	125	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "xb_speaker", 1.00)
	126	MACHINE_CONFIG_END
	127
103	128	machine_config_constructor a78_xboard_device::device_mconfig_additions() const
104	129	{
105	130	return MACHINE_CONFIG_NAME( a78_xb );
106	131	}
107	132
	133	machine_config_constructor a78_xm_device::device_mconfig_additions() const
	134	{
	135	return MACHINE_CONFIG_NAME( a78_xm );
	136	}
108	137
109	138	/*-------------------------------------------------
110	139	mapper specific handlers
r31778	r31779
177	206	return m_rom[offset];
178	207	}
179	208
	209	READ8_MEMBER(a78_xm_device::read_04xx)
	210	{
	211	if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
	212	return m_pokey->read(space, offset & 0x0f);
	213	else if (m_ym_enabled && offset >= 0x60 && offset <= 0x61)
	214	return m_ym->read(space, offset & 1);
	215	else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
	216	return m_xbslot->read_04xx(space, offset - 0x10);   // access second POKEY
	217	else
	218	return 0xff;
	219	}
	220
	221	WRITE8_MEMBER(a78_xm_device::write_04xx)
	222	{
	223	if (BIT(m_reg, 4) && offset >= 0x50 && offset < 0x60)
	224	m_pokey->write(space, offset & 0x0f, data);
	225	else if (m_ym_enabled && offset >= 0x60 && offset <= 0x61)
	226	m_ym->write(space, offset & 1, data);
	227	else if (BIT(m_reg, 4) && offset >= 0x60 && offset < 0x70)
	228	m_xbslot->write_04xx(space, offset - 0x10, data);   // access second POKEY
	229	else if (offset >= 0x70 && offset < 0x80)
	230	{
	231	if (data == 0x84)
	232	m_ym_enabled = 1;
	233	m_reg = data;
	234	m_ram_bank = m_reg & 7;
	235	}
	236	}
	237

trunk/src/emu/bus/a7800/xboard.h

r31778	r31779
4	4	#include "a78_slot.h"
5	5	#include "rom.h"
6	6	#include "sound/pokey.h"
	7	#include "sound/2151intf.h"
7	8
8	9
9	10	// ======================> a78_xboard_device
r31778	r31779
41	42	// construction/destruction
42	43	a78_xm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
43	44
	45	// device-level overrides
	46	virtual void device_start();
	47	virtual machine_config_constructor device_mconfig_additions() const;
	48	virtual void device_reset();
	49
44	50	// reading and writing
	51	virtual DECLARE_READ8_MEMBER(read_04xx);
	52	virtual DECLARE_WRITE8_MEMBER(write_04xx);
45	53	virtual DECLARE_READ8_MEMBER(read_10xx);
46	54	virtual DECLARE_WRITE8_MEMBER(write_10xx);
47	55	virtual DECLARE_READ8_MEMBER(read_30xx);
	56
	57	protected:
	58	required_device<ym2151_device> m_ym;
	59	int m_ym_enabled;
48	60	};
49	61
50	62

trunk/hash/a7800.xml

r31778	r31779
2436	2436
2437	2437	<!-- XM board enhanced -->
2438	2438
2439		<!-- these should require an XM board? but the emulation seems to be built into the base driver?-->
2440		<!-- these have had the header stripped vs the .a78 files offered
2441		there was also a 'binary' with size 0x24000, CRC fd503bd4 -->
2442	2439	<software name="dkongxm">
2443		<description>Donkey Kong (homebrew, XM enhanced, HSC support) (Demo)</description>
	2440	<description>Donkey Kong (PAL, Demo, XM enhanced)</description>
2444	2441	<year>2012</year>
2445		<publisher>&lt;homebrew&gt;</publisher> <!-- TEP392  -->
	2442	<publisher>&lt;homebrew&gt;</publisher>
	2443	<info name="programmer" value="TEP392" />
2446	2444	<sharedfeat name="compatibility" value="PAL"/>
2447	2445	<part name="cart" interface="a7800_cart">
2448	2446	<feature name="pcb_type" value="TYPE-XM" />
2449	2447	<feature name="slot" value="a78_xmc" />
2450	2448	<dataarea name="rom" size="0x24000">
2451		<rom name="dkxm_final_demo_pal_hsc.a78" size="0x24000" crc="6510b674" sha1="65b723b470d287af51e9888813149c43fb11ac26" offset="0" />
2452		</dataarea>
2453		</part>
2454		</software>
2455
2456		<software name="dkongxmu" cloneof="dkongxm" >
2457		<description>Donkey Kong (homebrew, XM enhanced, HSC support) (Demo) (NTSC)</description>
2458		<year>2012</year>
2459		<publisher>&lt;homebrew&gt;</publisher> <!-- TEP392  -->
2460		<sharedfeat name="compatibility" value="NTSC"/>
2461		<part name="cart" interface="a7800_cart">
2462		<feature name="pcb_type" value="TYPE-XM" />
2463		<feature name="slot" value="a78_xmc" />
2464		<dataarea name="rom" size="0x24000">
2465		<rom name="dkxm_final_demo_ntsc_hsc.a78" size="0x24000" crc="2c67fea7" sha1="7825c1946e3c7492fa9bbfae33029cd68c0d1135" offset="0" />
2466		</dataarea>
2467		</part>
2468		</software>
2469
2470		<software name="dkongxmn" cloneof="dkongxm">
2471		<description>Donkey Kong (homebrew, XM enhanced) (Demo)</description>
2472		<year>2012</year>
2473		<publisher>&lt;homebrew&gt;</publisher> <!-- TEP392  -->
2474		<sharedfeat name="compatibility" value="PAL"/>
2475		<part name="cart" interface="a7800_cart">
2476		<feature name="pcb_type" value="TYPE-XM" />
2477		<feature name="slot" value="a78_xmc" />
2478		<dataarea name="rom" size="0x24000">
2479	2449	<rom name="dkxm_final_demo_pal.a78" size="0x24000" crc="d362712e" sha1="118c462d6698bd23c378785f80062fdd7d65ca00" offset="0" />
2480	2450	</dataarea>
2481	2451	</part>
2482	2452	</software>
2483	2453
2484	2454	<software name="dkongxmnu" cloneof="dkongxm" >
2485		<description>Donkey Kong (homebrew, XM enhanced) (Demo) (NTSC)</description>
	2455	<description>Donkey Kong (NTSC, Demo, XM enhanced)</description>
2486	2456	<year>2012</year>
2487		<publisher>&lt;homebrew&gt;</publisher> <!-- TEP392  -->
	2457	<publisher>&lt;homebrew&gt;</publisher>
	2458	<info name="programmer" value="TEP392" />
2488	2459	<sharedfeat name="compatibility" value="NTSC"/>
2489	2460	<part name="cart" interface="a7800_cart">
2490	2461	<feature name="pcb_type" value="TYPE-XM" />

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