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r2108 Tuesday 25th March, 2008 at 20:42:31 UTC by Justin Kerk
More messnew.txt & eol-style updates

[docs]	messnew.txt
[src/mess/audio]	special.c

src/mess/audio/special.c

r2107	r2108
1		/***************************************************************************
2
3		audio/special.c
4
5		Functions to emulate sound hardware of Specialist MX
6		( based on code of DAI interface )
7
8		****************************************************************************/
9
10		#include "driver.h"
11		#include "sound/custom.h"
12		#include "machine/pit8253.h"
13		#include "includes/dai.h"
14		#include "streams.h"
15		#include "deprecat.h"
16
17		static void *specimx_sh_start(int clock, const struct CustomSound_interface *config);
18		static void specimx_sh_update(void *param,stream_sample_t **inputs, stream_sample_t **_buffer,int length);
19
20		static sound_stream *mixer_channel;
21
22		const struct CustomSound_interface specimx_sound_interface =
23		{
24		specimx_sh_start,
25		NULL,
26		NULL
27		};
28
29		static void *specimx_sh_start(int clock, const struct CustomSound_interface *config)
30		{
31		mixer_channel = stream_create(0, 2, Machine->sample_rate, 0, specimx_sh_update);
32		return (void *) ~0;
33		}
34
35		static void specimx_sh_update(void *param,stream_sample_t **inputs, stream_sample_t **buffer,int length)
36		{
37		INT16 channel_0_signal;
38		INT16 channel_1_signal;
39		INT16 channel_2_signal;
40		static int channel_0_incr = 0;
41		static int channel_1_incr = 0;
42		static int channel_2_incr = 0;
43		int channel_0_baseclock;
44		int channel_1_baseclock;
45		int channel_2_baseclock;
46
47		int rate = Machine->sample_rate / 2;
48
49		stream_sample_t *sample_left = buffer[0];
50		stream_sample_t *sample_right = buffer[1];
51
52		channel_0_baseclock = pit8253_get_frequency(0, 0);
53		channel_1_baseclock = pit8253_get_frequency(0, 1);
54		channel_2_baseclock = pit8253_get_frequency(0, 2);
55
56		channel_0_signal = pit8253_get_output (0,0) ? 3000 : -3000;
57		channel_1_signal = pit8253_get_output (0,1) ? 3000 : -3000;
58		channel_2_signal = pit8253_get_output (0,2) ? 3000 : -3000;
59
60
61		while (length--)
62		{
63		*sample_left = 0;
64		*sample_right = 0;
65
66		/* music channel 0 */
67
68		*sample_left += channel_0_signal;
69		channel_0_incr -= channel_0_baseclock;
70		while( channel_0_incr < 0 )
71		{
72		channel_0_incr += rate;
73		channel_0_signal = -channel_0_signal;
74		}
75
76
77		/* music channel 1 */
78
79		*sample_left += channel_1_signal;
80		channel_1_incr -= channel_1_baseclock;
81		while( channel_1_incr < 0 )
82		{
83		channel_1_incr += rate;
84		channel_1_signal = -channel_1_signal;
85		}
86
87		/* music channel 2 */
88
89		*sample_left += channel_2_signal;
90		channel_2_incr -= channel_2_baseclock;
91		while( channel_2_incr < 0 )
92		{
93		channel_2_incr += rate;
94		channel_2_signal = -channel_2_signal;
95		}
96
97		sample_left++;
98		sample_right++;
99		}
100		}
101
102		void specimx_sh_change_clock(double clock)
103		{
104		stream_update(mixer_channel);
105		}
	1	/***************************************************************************
	2
	3	audio/special.c
	4
	5	Functions to emulate sound hardware of Specialist MX
	6	( based on code of DAI interface )
	7
	8	****************************************************************************/
	9
	10	#include "driver.h"
	11	#include "sound/custom.h"
	12	#include "machine/pit8253.h"
	13	#include "includes/dai.h"
	14	#include "streams.h"
	15	#include "deprecat.h"
	16
	17	static void *specimx_sh_start(int clock, const struct CustomSound_interface *config);
	18	static void specimx_sh_update(void *param,stream_sample_t **inputs, stream_sample_t **_buffer,int length);
	19
	20	static sound_stream *mixer_channel;
	21
	22	const struct CustomSound_interface specimx_sound_interface =
	23	{
	24	specimx_sh_start,
	25	NULL,
	26	NULL
	27	};
	28
	29	static void *specimx_sh_start(int clock, const struct CustomSound_interface *config)
	30	{
	31	mixer_channel = stream_create(0, 2, Machine->sample_rate, 0, specimx_sh_update);
	32	return (void *) ~0;
	33	}
	34
	35	static void specimx_sh_update(void *param,stream_sample_t **inputs, stream_sample_t **buffer,int length)
	36	{
	37	INT16 channel_0_signal;
	38	INT16 channel_1_signal;
	39	INT16 channel_2_signal;
	40	static int channel_0_incr = 0;
	41	static int channel_1_incr = 0;
	42	static int channel_2_incr = 0;
	43	int channel_0_baseclock;
	44	int channel_1_baseclock;
	45	int channel_2_baseclock;
	46
	47	int rate = Machine->sample_rate / 2;
	48
	49	stream_sample_t *sample_left = buffer[0];
	50	stream_sample_t *sample_right = buffer[1];
	51
	52	channel_0_baseclock = pit8253_get_frequency(0, 0);
	53	channel_1_baseclock = pit8253_get_frequency(0, 1);
	54	channel_2_baseclock = pit8253_get_frequency(0, 2);
	55
	56	channel_0_signal = pit8253_get_output (0,0) ? 3000 : -3000;
	57	channel_1_signal = pit8253_get_output (0,1) ? 3000 : -3000;
	58	channel_2_signal = pit8253_get_output (0,2) ? 3000 : -3000;
	59
	60
	61	while (length--)
	62	{
	63	*sample_left = 0;
	64	*sample_right = 0;
	65
	66	/* music channel 0 */
	67
	68	*sample_left += channel_0_signal;
	69	channel_0_incr -= channel_0_baseclock;
	70	while( channel_0_incr < 0 )
	71	{
	72	channel_0_incr += rate;
	73	channel_0_signal = -channel_0_signal;
	74	}
	75
	76
	77	/* music channel 1 */
	78
	79	*sample_left += channel_1_signal;
	80	channel_1_incr -= channel_1_baseclock;
	81	while( channel_1_incr < 0 )
	82	{
	83	channel_1_incr += rate;
	84	channel_1_signal = -channel_1_signal;
	85	}
	86
	87	/* music channel 2 */
	88
	89	*sample_left += channel_2_signal;
	90	channel_2_incr -= channel_2_baseclock;
	91	while( channel_2_incr < 0 )
	92	{
	93	channel_2_incr += rate;
	94	channel_2_signal = -channel_2_signal;
	95	}
	96
	97	sample_left++;
	98	sample_right++;
	99	}
	100	}
	101
	102	void specimx_sh_change_clock(double clock)
	103	{
	104	stream_update(mixer_channel);
	105	}

docs/messnew.txt

r2107	r2108
38	38
39	39	- [COCO] Added a quickload for .BIN files.  [Nate Woods]
40	40
	41	- [EP128] Fixed 0.119 regression in graphics display. (bug #1478)
	42	[Wilbert Pol]
	43
41	44	- [GALAXY] Fixed regressions.  [Miodrag Milanovic]
42	45
43	46	- [GAMEBOY] Added support for Korean MBC1 mapper variant.  [Wilbert Pol]
44	47
	48	- [LYNX] Always recompute timer settings when a timer register is being
	49	written. Fixes 0.118 regression in Gates of Zendocon (bug #1435).
	50	[Wilbert Pol]
	51
45	52	- [MBEE] Fixed colours, sound, Inverse and Underline modes. Enabled alternate
46	53	characters. [Robbbert]
47	54
r2107	r2108
89	96
90	97	Source Changes:
91	98	----------------
92		- The core is based on MAME 0.124.  This incorporates all features of the
	99	- The core is based on MAME 0.124a.  This incorporates all features of the
93	100	update to this core.  [MAME team]
94	101
95	102	- Updated the Motorola MC68901 Multi Function Peripheral to use the new

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