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r19918 Saturday 29th December, 2012 at 12:25:41 UTC by Wilbert Pol
(MESS) Cleaned up formatting a bit; no functional change (nw)

[src/mess/machine]

odyssey2.c

trunk/src/mess/machine/odyssey2.c

r19917	r19918
16	16	static void odyssey2_switch_banks(running_machine &machine)
17	17	{
18	18	odyssey2_state *state = machine.driver_data<odyssey2_state>();
19		switch ( state->m_cart_size ) {
20		case 12288:
21		/* 12KB cart support (for instance, KTAA as released) */
22		state->membank( "bank1" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0xC00 );
23		state->membank( "bank2" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0xC00 + 0x800 );
24		break;
25		case 16384:
26		/* 16KB cart support (for instance, full sized version KTAA) */
27		state->membank( "bank1" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x1000 + 0x400 );
28		state->membank( "bank2" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x1000 + 0xC00 );
29		break;
30		default:
31		state->membank("bank1")->set_base(machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x800);
32		state->membank("bank2")->set_base(state->memregion("user1")->base() + (state->m_p1 & 0x03) * 0x800 );
33		break;
	19	switch ( state->m_cart_size )
	20	{
	21	case 12288:
	22	/* 12KB cart support (for instance, KTAA as released) */
	23	state->membank( "bank1" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0xC00 );
	24	state->membank( "bank2" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0xC00 + 0x800 );
	25	break;
	26
	27	case 16384:
	28	/* 16KB cart support (for instance, full sized version KTAA) */
	29	state->membank( "bank1" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x1000 + 0x400 );
	30	state->membank( "bank2" )->set_base( machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x1000 + 0xC00 );
	31	break;
	32
	33	default:
	34	state->membank("bank1")->set_base(machine.root_device().memregion("user1")->base() + (state->m_p1 & 0x03) * 0x800);
	35	state->membank("bank2")->set_base(state->memregion("user1")->base() + (state->m_p1 & 0x03) * 0x800 );
	36	break;
34	37	}
35	38	}
36	39
37		void odyssey2_the_voice_lrq_callback(device_t *device, int state) {
	40	void odyssey2_the_voice_lrq_callback(device_t *device, int state)
	41	{
38	42	odyssey2_state *drvstate = device->machine().driver_data<odyssey2_state>();
39	43	drvstate->m_the_voice_lrq_state = state;
40	44	}
41	45
42		READ8_MEMBER(odyssey2_state::odyssey2_t0_r){
	46	READ8_MEMBER(odyssey2_state::odyssey2_t0_r)
	47	{
43	48	return ( m_the_voice_lrq_state == ASSERT_LINE ) ? 0 : 1;
44	49	}
45	50
r19917	r19918
84	89
85	90	READ8_MEMBER(odyssey2_state::odyssey2_bus_r)
86	91	{
87		if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0)
	92	if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0)
	93	{
88	94	return odyssey2_video_r(space, offset); /* seems to have higher priority than ram??? */
89
90		else if (!(m_p1 & P1_EXT_RAM_ENABLE))
	95	}
	96	if (!(m_p1 & P1_EXT_RAM_ENABLE))
	97	{
91	98	return m_ram[offset];
	99	}
92	100
93		return 0;
	101	return 0;
94	102	}
95	103
96	104	WRITE8_MEMBER(odyssey2_state::odyssey2_bus_w)
97	105	{
98		if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00) {
	106	if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00)
	107	{
99	108	m_ram[offset] = data;
100		if ( offset & 0x80 ) {
101		if ( data & 0x20 ) {
	109	if ( offset & 0x80 )
	110	{
	111	if ( data & 0x20 )
	112	{
102	113	logerror("voice write %02X, data = %02X (p1 = %02X)\n", offset, data, m_p1 );
103	114	sp0256_ALD_w( machine().device("sp0256_speech"), space, 0, offset & 0x7F );
104		} else {
	115	}
	116	else
	117	{
105	118	/* TODO: Reset sp0256 in this case */
106	119	}
107	120	}
108	121	}
109
110		else if (!(m_p1 & P1_VDC_ENABLE))
	122	else if (!(m_p1 & P1_VDC_ENABLE))
	123	{
111	124	odyssey2_video_w(space, offset, data);
	125	}
112	126	}
113	127
114	128	READ8_MEMBER(odyssey2_state::g7400_bus_r)
115	129	{
116		if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0) {
	130	if ((m_p1 & (P1_VDC_COPY_MODE_ENABLE | P1_VDC_ENABLE)) == 0)
	131	{
117	132	return odyssey2_video_r(space, offset); /* seems to have higher priority than ram??? */
118	133	}
119		else if (!(m_p1 & P1_EXT_RAM_ENABLE)) {
	134	else if (!(m_p1 & P1_EXT_RAM_ENABLE))
	135	{
120	136	return m_ram[offset];
121		} else {
122		//      return ef9341_r( offset & 0x02, offset & 0x01 );
123	137	}
	138	else
	139	{
	140	//return ef9341_r( offset & 0x02, offset & 0x01 );
	141	}
124	142
125	143	return 0;
126	144	}
127	145
128	146	WRITE8_MEMBER(odyssey2_state::g7400_bus_w)
129	147	{
130		if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00) {
	148	if ((m_p1 & (P1_EXT_RAM_ENABLE | P1_VDC_COPY_MODE_ENABLE)) == 0x00)
	149	{
131	150	m_ram[offset] = data;
132	151	}
133		else if (!(m_p1 & P1_VDC_ENABLE)) {
	152	else if (!(m_p1 & P1_VDC_ENABLE))
	153	{
134	154	odyssey2_video_w(space, offset, data);
135		} else {
136		//      ef9341_w( offset & 0x02, offset & 0x01, data );
137	155	}
	156	else
	157	{
	158	//ef9341_w( offset & 0x02, offset & 0x01, data );
	159	}
138	160	}
139	161
140	162	/***** 8048 Ports ************************/
r19917	r19918
160	182
161	183	READ8_MEMBER(odyssey2_state::odyssey2_getp2)
162	184	{
163		UINT8 h = 0xFF;
164		int i, j;
	185	UINT8 h = 0xFF;
	186	int i, j;
165	187	static const char *const keynames[] = { "KEY0", "KEY1", "KEY2", "KEY3", "KEY4", "KEY5" };
166	188
167		if (!(m_p1 & P1_KEYBOARD_SCAN_ENABLE))
	189	if (!(m_p1 & P1_KEYBOARD_SCAN_ENABLE))
168	190	{
169	191	if ((m_p2 & P2_KEYBOARD_SELECT_MASK) <= 5)  /* read keyboard */
170	192	{
r19917	r19918
182	204	}
183	205	}
184	206
185		if (h == 0xFF)  /* active low inputs, so no keypresses */
186		m_p2 = m_p2 | 0xF0;
	207	if (h == 0xFF)  /* active low inputs, so no keypresses */
	208	{
	209	m_p2 = m_p2 | 0xF0;
	210	}
187	211	}
188
189	212	else
190		m_p2 = m_p2 | 0xF0;
	213	{
	214	m_p2 = m_p2 | 0xF0;
	215	}
191	216
192		logerror("%.6f p2 read %.2x\n", machine().time().as_double(), m_p2);
193		return m_p2;
	217	logerror("%.6f p2 read %.2x\n", machine().time().as_double(), m_p2);
	218	return m_p2;
194	219	}
195	220
196	221	WRITE8_MEMBER(odyssey2_state::odyssey2_putp2)
197	222	{
198		m_p2 = data;
	223	m_p2 = data;
199	224
200		logerror("%.6f p2 written %.2x\n", machine().time().as_double(), data);
	225	logerror("%.6f p2 written %.2x\n", machine().time().as_double(), data);
201	226	}
202	227
203	228	READ8_MEMBER(odyssey2_state::odyssey2_getbus)
204	229	{
205		UINT8 data = 0xff;
	230	UINT8 data = 0xff;
206	231
207		if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 1)
	232	if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 1)
	233	{
208	234	data &= ioport("JOY0")->read();       /* read joystick 1 */
	235	}
209	236
210		if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 0)
	237	if ((m_p2 & P2_KEYBOARD_SELECT_MASK) == 0)
	238	{
211	239	data &= ioport("JOY1")->read();       /* read joystick 2 */
	240	}
212	241
213		logerror("%.6f bus read %.2x\n", machine().time().as_double(), data);
214		return data;
	242	logerror("%.6f bus read %.2x\n", machine().time().as_double(), data);
	243	return data;
215	244	}
216	245
217	246	WRITE8_MEMBER(odyssey2_state::odyssey2_putbus)
218	247	{
219		logerror("%.6f bus written %.2x\n", machine().time().as_double(), data);
	248	logerror("%.6f bus written %.2x\n", machine().time().as_double(), data);
220	249	}
221	250
222	251	///////////////////////////////////
r19917	r19918
226	255	{
227	256	odyssey2_state *state = machine.driver_data<odyssey2_state>();
228	257	state->m_cart_size = size;
229		if (   (size == 2048)
230		|| (size == 4096)
231		|| (size == 8192)
	258	if (   (size == 2048)
	259	|| (size == 4096)
	260	|| (size == 8192)
232	261	|| (size == 12288)
233	262	|| (size == 16384))
234		{
	263	{
235	264	return IMAGE_VERIFY_PASS;
236		}
	265	}
237	266
238		return IMAGE_VERIFY_FAIL;
	267	return IMAGE_VERIFY_FAIL;
239	268	}
240	269	#endif

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