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r31519 Tuesday 5th August, 2014 at 17:54:11 UTC by hap
changed RP5H01 from read8/write8 to read_line/write_line + removed unneeded enable/disable in drivers

[src/emu/machine]	rp5h01.c rp5h01.h
[src/mame/drivers]	nss.c
[src/mame/machine]	playch10.c

trunk/src/emu/machine/rp5h01.c

r31518	r31519
1	1	/***************************************************************************
2	2
3		RP5H01
	3	RP5H01 - Ricoh 64x1bit PROM with 6/7-bit counter
4	4
5	5	TODO:
6	6	- follow the datasheet better (all dumps presumably needs to be redone
r31518	r31519
59	59	m_counter_mode = COUNTER_MODE_6_BITS;
60	60	m_enabled = 0;
61	61	m_old_reset = -1;
62		m_old_clock = -1;
	62	m_old_clock = 0;
63	63	}
64	64
65	65
r31518	r31519
71	71	enable_w
72	72	-------------------------------------------------*/
73	73
74		WRITE8_MEMBER( rp5h01_device::enable_w )
	74	WRITE_LINE_MEMBER( rp5h01_device::enable_w )
75	75	{
76	76	/* process the /CE signal and enable/disable the IC */
77		m_enabled = (data == 0) ? 1 : 0;
	77	m_enabled = state ? 0 : 1;
78	78	}
79	79
80	80	/*-------------------------------------------------
81	81	reset_w
82	82	-------------------------------------------------*/
83	83
84		WRITE8_MEMBER( rp5h01_device::reset_w )
	84	WRITE_LINE_MEMBER( rp5h01_device::reset_w )
85	85	{
86		int newstate = (data == 0) ? 0 : 1;
	86	state = !state;
87	87
88	88	/* if it's not enabled, ignore */
89	89	if (!m_enabled)
90	90	return;
91	91
92	92	/* now look for a 0->1 transition */
93		if (m_old_reset == 0 && newstate == 1)
	93	if (!m_old_reset && state)
94	94	{
95	95	/* reset the counter */
96	96	m_counter = 0;
97	97	}
98	98
99	99	/* update the pin */
100		m_old_reset = newstate;
	100	m_old_reset = state;
101	101	}
102	102
103	103	/*-------------------------------------------------
104	104	cs_w
105	105	-------------------------------------------------*/
106	106
107		WRITE8_MEMBER( rp5h01_device::cs_w )
	107	WRITE_LINE_MEMBER( rp5h01_device::cs_w )
108	108	{
109	109	/* if it's not enabled, ignore */
110	110	if (!m_enabled)
111	111	return;
112	112
113		if (data == 1)
	113	if (state)
114	114	{
115	115	/* reset the counter */
116	116	m_counter = 0;
r31518	r31519
121	121	clock_w
122	122	-------------------------------------------------*/
123	123
124		WRITE8_MEMBER( rp5h01_device::clock_w )
	124	WRITE_LINE_MEMBER( rp5h01_device::clock_w )
125	125	{
126		int newstate = (data == 0) ? 0 : 1;
127
128	126	/* if it's not enabled, ignore */
129	127	if (!m_enabled)
130	128	return;
131	129
132	130	/* now look for a 1->0 transition */
133		if (m_old_clock == 1 && newstate == 0)
	131	if (m_old_clock && !state)
134	132	{
135	133	/* increment the counter, and mask it with the mode */
136	134	m_counter++;
137	135	}
138	136
139	137	/* update the pin */
140		m_old_clock = newstate;
	138	m_old_clock = state;
141	139	}
142	140
143	141	/*-------------------------------------------------
144	142	test_w
145	143	-------------------------------------------------*/
146	144
147		WRITE8_MEMBER( rp5h01_device::test_w )
	145	WRITE_LINE_MEMBER( rp5h01_device::test_w )
148	146	{
149	147	/* if it's not enabled, ignore */
150	148	if (!m_enabled)
151	149	return;
152	150
153	151	/* process the test signal and change the counter mode */
154		m_counter_mode = (data == 0) ? COUNTER_MODE_6_BITS : COUNTER_MODE_7_BITS;
	152	m_counter_mode = (state) ? COUNTER_MODE_7_BITS : COUNTER_MODE_6_BITS;
155	153	}
156	154
157	155	/*-------------------------------------------------
158	156	counter_r
159	157	-------------------------------------------------*/
160	158
161		READ8_MEMBER( rp5h01_device::counter_r )
	159	READ_LINE_MEMBER( rp5h01_device::counter_r )
162	160	{
163	161	/* if it's not enabled, ignore */
164	162	if (!m_enabled)
165		return 0; /* ? (should be high impedance) */
	163	return 1; /* high impedance */
166	164
167	165	/* return A5 */
168	166	return (m_counter >> 5) & 1;
r31518	r31519
172	170	data_r
173	171	-------------------------------------------------*/
174	172
175		READ8_MEMBER( rp5h01_device::data_r )
	173	READ_LINE_MEMBER( rp5h01_device::data_r )
176	174	{
177		int byte, bit;
178
179	175	/* if it's not enabled, ignore */
180	176	if (!m_enabled)
181		return 0; /* ? (should be high impedance) */
	177	return 1; /* high impedance */
182	178
183	179	/* get the byte offset and bit offset */
184		byte = (m_counter & m_counter_mode) >> 3;
185		bit = 7 - (m_counter & 7);
	180	int byte = (m_counter & m_counter_mode) >> 3;
	181	int bit = 7 - (m_counter & 7);
186	182
187	183	/* return the data */
188	184	return (m_data[byte] >> bit) & 1;

trunk/src/emu/machine/rp5h01.h

r31518	r31519
1	1	/***************************************************************************
2	2
3		RP5H01
	3	RP5H01 - Ricoh 64x1bit PROM with 6/7-bit counter
4	4
	5	****************************************************************************
	6	___________
	7	DATA   1 |*          | 8  COUNTER OUT
	8	|           |
	9	_CE/Vpp   2 |   RP5H01  | 7  RESET
	10	|   RF5H01  |
	11	Vcc   3 |           | 6  DATA CLOCK
	12	|           |
	13	GND   4 |___________| 5  TEST
5	14
6	15	***************************************************************************/
7	16
r31518	r31519
28	37	public:
29	38	rp5h01_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
30	39
31		DECLARE_WRITE8_MEMBER( enable_w );   /* /CE */
32		DECLARE_WRITE8_MEMBER( reset_w );    /* RESET */
33		DECLARE_WRITE8_MEMBER( cs_w );   /* CS */
34		DECLARE_WRITE8_MEMBER( clock_w );    /* DATA CLOCK (active low) */
35		DECLARE_WRITE8_MEMBER( test_w );     /* TEST */
36		DECLARE_READ8_MEMBER( counter_r );   /* COUNTER OUT */
37		DECLARE_READ8_MEMBER( data_r );      /* DATA */
	40	DECLARE_WRITE_LINE_MEMBER( enable_w );   /* /CE */
	41	DECLARE_WRITE_LINE_MEMBER( reset_w );    /* RESET */
	42	DECLARE_WRITE_LINE_MEMBER( cs_w );       /* CS */
	43	DECLARE_WRITE_LINE_MEMBER( clock_w );    /* DATA CLOCK (active low) */
	44	DECLARE_WRITE_LINE_MEMBER( test_w );     /* TEST */
	45	DECLARE_READ_LINE_MEMBER( counter_r );   /* COUNTER OUT */
	46	DECLARE_READ_LINE_MEMBER( data_r );      /* DATA */
38	47
39	48	protected:
40	49	// device-level overrides

trunk/src/mame/machine/playch10.c

r31518	r31519
26	26	m_MMC2_bank_latch[0] = m_MMC2_bank_latch[1] = 0xfe;
27	27
28	28	/* reset the security chip */
29		address_space &space = generic_space();
30		m_rp5h01->enable_w(space, 0, 0);
31		m_rp5h01->reset_w(space, 0, 0);
32		m_rp5h01->reset_w(space, 0, 1);
33		m_rp5h01->enable_w(space, 0, 1);
	29	m_rp5h01->enable_w(1);
	30	m_rp5h01->enable_w(0);
	31	m_rp5h01->reset_w(0);
	32	m_rp5h01->reset_w(1);
34	33
35	34	pc10_set_mirroring(m_mirroring);
36	35	}
r31518	r31519
160	159	/* we only support a single cart connected at slot 0 */
161	160	if (m_cart_sel == 0)
162	161	{
163		m_rp5h01->enable_w(space, 0, 0);
164		data |= ((~m_rp5h01->counter_r(space, 0)) << 4) & 0x10;    /* D4 */
165		data |= ((m_rp5h01->data_r(space, 0)) << 3) & 0x08;        /* D3 */
166		m_rp5h01->enable_w(space, 0, 1);
	162	data |= ((~m_rp5h01->counter_r()) << 4) & 0x10;  /* D4 */
	163	data |= (m_rp5h01->data_r() << 3) & 0x08;        /* D3 */
167	164	}
168	165	return data;
169	166	}
r31518	r31519
173	170	/* we only support a single cart connected at slot 0 */
174	171	if (m_cart_sel == 0)
175	172	{
176		m_rp5h01->enable_w(space, 0, 0);
177		m_rp5h01->test_w(space, 0, data & 0x10);       /* D4 */
178		m_rp5h01->clock_w(space, 0, data & 0x08);      /* D3 */
179		m_rp5h01->reset_w(space, 0, ~data & 0x01); /* D0 */
180		m_rp5h01->enable_w(space, 0, 1);
	173	m_rp5h01->test_w(data & 0x10);       /* D4 */
	174	m_rp5h01->clock_w(data & 0x08);      /* D3 */
	175	m_rp5h01->reset_w(~data & 0x01);     /* D0 */
181	176	}
182	177	}
183	178

trunk/src/mame/drivers/nss.c

r31518	r31519
304	304	m_rp5h01(*this,"rp5h01"),
305	305	m_screen(*this, "screen"),
306	306	m_palette(*this, "palette")
307		{ }
	307	{ }
308	308
309	309	required_device<m50458_device> m_m50458;
310	310	required_device<s3520cf_device> m_s3520cf;
r31518	r31519
470	470
471	471	if (m_cart_sel == 0)
472	472	{
473		m_rp5h01->enable_w(space, 0, 0);
474		data |= ((~m_rp5h01->counter_r(space, 0)) << 4) & 0x10;  /* D4 */
475		data |= ((m_rp5h01->data_r(space, 0)) << 3) & 0x08;      /* D3 */
476		m_rp5h01->enable_w(space, 0, 1);
	473	data |= ((~m_rp5h01->counter_r()) << 4) & 0x10;  /* D4 */
	474	data |= (m_rp5h01->data_r() << 3) & 0x08;        /* D3 */
477	475	}
478		else
479		m_rp5h01->enable_w(space, 0, 1);
480	476
481	477	return data;
482	478	}
r31518	r31519
485	481	{
486	482	if (m_cart_sel == 0)
487	483	{
488		m_rp5h01->enable_w(space, 0, 0);
489		m_rp5h01->test_w(space, 0, data & 0x10);     /* D4 */
490		m_rp5h01->clock_w(space, 0, data & 0x08);        /* D3 */
491		m_rp5h01->cs_w(space, 0, ~data & 0x01);
492		m_rp5h01->enable_w(space, 0, 1);
	484	m_rp5h01->test_w(data & 0x10);     /* D4 */
	485	m_rp5h01->clock_w(data & 0x08);    /* D3 */
	486	m_rp5h01->cs_w(~data & 0x01);
493	487	}
494		else
495		m_rp5h01->enable_w(space, 0, 1);
496	488
497	489	ioport("EEPROMOUT")->write(data, 0xff);
498	490	}
r31518	r31519
803	795	m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
804	796	m_soundcpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
805	797
	798	/* reset the security chip */
	799	m_rp5h01->enable_w(1);
	800	m_rp5h01->enable_w(0);
	801	m_rp5h01->reset_w(0);
	802	m_rp5h01->reset_w(1);
	803
806	804	m_game_over_flag = 1;
807	805	m_joy_flag = 1;
808	806	}

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199869 Revisions

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