ReactOS  0.4.14-dev-115-g4576127
dsp.c
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1 /*
2  * COPYRIGHT: See COPYING in the top level directory
3  * PROJECT: ReactOS kernel
4  * FILE: drivers/dd/sound/dsp.c
5  * PURPOSE: Digital Signal Processing ?
6  * PROGRAMMER: Snatched from ?
7  *
8  * UPDATE HISTORY:
9  * ??/??/??: Created
10  * 10/23/02: Steven Edwards (Steven_Ed4153@yahoo.com)
11  * Minor build fix
12  */
13 
14 #include "sb16.h"
15 #include "dsp.h"
16 
17 /************************************
18  * unsigned char read_dsp(void)
19  *
20  * Reads the DSP chip
21  * Arguments: none
22  * Returns: Byte read
23  ************************************/
24 unsigned char read_dsp(unsigned short base)
25 {
26 // while((inb(base+0x0e)&0x80)==0); //Wait until there is something to read
27 // return inb(base+0x0a);
28  return 0;
29 }
30 
31 /************************************'
32  * sb_status detect_dsp(void);
33  *
34  * Detects if a SB16 is installed
35  * Arguments: None
36  * Returns: Success or failure
37  ************************************/
39 {
40  for(base=0x200;base<0x280;base+=0x10) //Tries to reset all DSP addresses there is
41  if(reset_dsp(base)==SB_TRUE)
42  {
43  sb16->base=base;
44  return SB_TRUE;
45  }
46  return SB_FALSE;
47 }
48 
49 /**************************************
50  * sb_status reset_dsp(unsigned short base_address);
51  *
52  * Tries to reset a DSP chip
53  * Arguments: base address
54  * Returns: Success of failure
55  **************************************/
56 sb_status reset_dsp(unsigned short base_address)
57 {
58 // int delay;
59 
60 // outb(base_address+DSP_RESET_PORT,1);
61 // for(delay=0;delay<0xffff;delay++);
62 
63 // outb(base_address+DSP_RESET_PORT,0);
64 // for(delay=0;delay<0xffff;delay++);
65 
66 // if((inb(base_address+DSP_READ_STATUS_PORT)&0x80)==0) return SB_FALSE;
67 
68 // if(inb(base_address+DSP_READ_DATA_PORT)!=0xAA) return SB_FALSE;
69 
70  return SB_TRUE;
71 }
72 
73 void write_dsp(unsigned short base,unsigned char data)
74 {
75 // while ((inb(base+DSP_WRITE_PORT) & 0x80) != 0);
76 // outb(base+DSP_WRITE_PORT, data);
77 }
78 
unsigned char read_dsp(unsigned short base)
Definition: dsp.c:24
sb_status reset_dsp(unsigned short base_address)
Definition: dsp.c:56
unsigned char sb_status
Definition: dsp.h:11
#define SB_TRUE
Definition: dsp.h:1
GLuint base
Definition: 3dtext.c:35
#define SB_FALSE
Definition: dsp.h:2
SB16 sb16
Definition: sound.c:26
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl.h:1950
void write_dsp(unsigned short base, unsigned char data)
Definition: dsp.c:73
sb_status detect_dsp(SB16 *sb16)
Definition: dsp.c:38
Definition: sb16.h:1
unsigned short base
Definition: sb16.h:3