Atlas - TRX-26-0003.txt
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1                    SERIAL SOUND CARD INTERFACE PROTOCOL
2                                TRX-26-0003
3                                16/03/2026
4---------------------------------------------------------------------------
5TITLE:          SERIAL SOUND CARD INTERFACE PROTOCOL
6ALSO KNOWN AS:  SSCIP
7DOCUMENT ID:    TRX-26-0003
8REVISION:       A2
9CATEGORY:       DESIGN AND PROTOCOL
10COPYRIGHTS:     (C) 2026 0x4248. CC BY-SA 4.0.
11USAGE RIGHTS:   All rights given under CC BY-SA 4.0
12LICENSE:        CC BY-SA 4.0
13
14DATE CREATED:   16 March 2026
15DATE REVISED:   16 March 2026
16
17---------------------------------------------------------------------------
18REVISION HISTORY
19---------------------------------------------------------------------------
20REVISION    DATE            NOTES
21A1          16/03/2026      Initial creation of record.
22A2          24/03/2026      Added file type section and notes
23
24---------------------------------------------------------------------------
25CONTENTS
26---------------------------------------------------------------------------
27
281.0  INSERT
292.0  SIGNATURES
30
31---------------------------------------------------------------------------
32ABSTRACT
33---------------------------------------------------------------------------
34
35This TRX defines the sound card interface protocol which allows computer
36programmers to communicate to a synthesizer without hassle. It is designed
37to work with almost any system and with minimal resource usage 
38
39---------------------------------------------------------------------------
401.0  PROTOCOL
41---------------------------------------------------------------------------
42
431.1 CONCEPT
44
45The SSCIP (Serial Sound Card Interface Protocol) should follow these simple
46concepts:
47- Allow the computer to send commands via serial
48- Process the output signal on the sound card
49- Use minimal drivers to get working
50
511.2 COMMANDS
52
53Each command is ended with a new line. The SSCIP processor reads each line
54taken in as separate commands
55
56Square wave tone:
57<HZ>\n
58  
59   #####   #####
60   #   #   #   # 
61   #   #   #   # 
62####   #####   #####
63
64Sine wave tone:
65s<HZ>\n
66
67
68###             ###          
69   ##         ##   ##         ##
70     #       #       #       #
71      ##   ##         ##   ##
72        ###             ###
73
74Saw wave tone:
75z<HZ>\n
76
77#     #     #
78 #   # #   # # 
79  # #   # #   #
80   #     #     #
81
82Delay CPU:
83d<MS>\n
84
85NOTE: This also blocks signals from other sources on the same serial
86connection
87
88NOTE: This does not block the host computer CPU.
89
90Note tone
91$<MODE><NOTE>\n
92
93Modes can be any of
94- " " - (None) Will do a square tone
95- s - Sine
96- z - Saw
97
98Note:
99Any musical note from C0 to C10
100
101Examples:
102$C4
103$A4
104$zD3
105
1061.3 Comments
107
108You can add a comment by appending a # to the start of the line.
109
110This can be useful for people sending a file into a device and put various
111comments in to create sections.
112
1131.4 File Type
114
115Files that contain the notes or tones that are put into the sound card can 
116be stored with the `.sst` extention (Serial Sound Tones) 
117
118---------------------------------------------------------------------------
1192.0  SIGNATURES
120---------------------------------------------------------------------------
121
122Written By:       4248 Systems / 0x4248       Date: 24/03/2026
123
124
125Reviewed By:      _________________________   Date: __________
126                
127                  Signature: _________________________
128
[FILE END]
(C) 2025 0x4248
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