🚀 go-pugleaf

Has anyone out there used the "Noisemaker" card on an S-100 or Apple II
system? 

Does anyone have the application note that engineers at General
Instruments (now Microchip), possibly on an unofficial basis, issued on
the AY-3-8910 sound chip?  They also produced a 28-pin '8912 which didn't
have the I/O port.  I have heard that the '8910 was actually developed by
Western Digital, and that W.D. engineers may really have been responsible 
for the Application Note; I have not been able to confirm this. 

What I'm looking for is not the Data Sheets.  This Application Note was
put together by some engineers;  it's 40 pages or more, and it's
typewritten with hand-drawn drawings.  It's not typeset. 

I'm looking for information on making better-sounding sounds, besides 
simple beep tones.  I want to make it sound like a bell ringing...

I just received, from Michael MacKenzie, photocopies from a 64 page
booklet entitled: AY-3-8910/8912 Programmable Sound Generator Data Manual.
(Page 64 contains an ad for "Noisemaker (S-100 Bus) & Noisemaker II (Apple
II Bus)" cards, from Advanced Computer Products, circa 1980.)  The table 
of contents listed below.  (Thanks, Michael!)  

It doesn't actually cover making a bell-ringing sound; does anyone out
there know how to do it?   Is it just a matter of programming the right 
envelope?  

1. Introduction
1.1 Description
1.2 Features
1.3 Scope

2. Architecture
2.1 Basic Functional Blocks
2.1.1 Register Array
2.1.2 Sound Generating blocks
2.1.3 I/O Ports
2.2 Pin Assignments
2.3 Pin Functions
2.4 Bus Timing
2.5 State Timing
2.5.1 Address PSG Register Sequence
2.5.2 Write Data to PSG Sequence
2.5.3 Read Data from PSG Sequence
2.5.4 Write to/Read from I/O Port Sequence

3. Operation
3.1 Tone Generator Control
3.2 Noise Generator Control
3.3 Mixer Control--I/O Enable
3.4 Amplitude Control
3.5 Envelope Generator Control
3.5.1 Envelope Period Control
3.5.2 Envelope Shape/Cycle Control
3.6 I/O Port Data Store
3.7 D/A Convert Operation

4. Interfacing
4.1 Introduction
4.2 Clock Generation
4.3 Audio Output Interface
4.4 External Memory Access
4.5 Microprocessor/Microcomputer Interface
4.6 Interfacing to the PIC 1650
4.6.1 Write Data Routine
4.6.2 Read Data Routine
4.6.3 Read ROM Routine
4.7 Interfacing to the CP1600/1610
4.7.1 Write Data Routine
4.7.2 Read Data Routine
4.7.3 Read ROM Routine
4.8 Interfacing the the M6800
4.8.1 Write Data Routine
4.8.2 Read Data Routine
4.8.3 Read ROM Routine
4.9 Interfacing to the 8080 S100 Bus
4.9.1 Write Data Routine
4.9.2 Read Data Routine
4.9.3 Read ROM Routine

5. Music Generation
5.1 Note Generation
5.2 Tune Entry/Platback
5.3 Tune Variation
5.3.1 Octave Shift
5.3.2 Key
5.3.3 Tempo
5.3.4 Chords
5.4 Sound Variation
5.4.1 Relative Channel Volume
5.4.2 Decay
5.4.3 Other Effects
5.5 Applications
5.5.1 Organ Envelope Generation
5.5.2 Organ Rhythm Generation

6. Sound Effects Generation
6.1 Tone Only Effects
6.2 Noise Only Effects
6.3 Frequency Sweep Effects
6.4 Multi-Channel Effects

7. Electrical Specifications
7.1 Maximum Ratings
7.2 Standard Conditions
7.3 DC Characteristics
7.4 AC Characteristics
7.5 Package Outlines

List of Illustrations
Fig. 1  Typical System Diagram
Fig. 2  PSG Block DIagram
Fig. 3  PSG Register Array
Fig. 4  AY-3-8910 Pin Assignments
Fig. 5  AY-3-8912 Pin Assignments
Fig. 6  Variable Amplitude Control
Fig. 7  Envelope Shape/Cycle Control
Fig. 8  Detail of Two Cycles of Fig. 7
Fig. 9  D/A Converter Output
Fig. 10 Single Tone with Envelope Shape/Cycle Pattern 1000
Fig. 11 Single Tone with Envelope Shape/Cycle Pattern 1100
Fig. 12 Single Tone with Envelope Shape/Cycle Pattern 1010
Fig. 13 Mixture of Three Tones with Fixed Amplitudes
Fig. 14 System Block DIagram
Fig. 15 Clock Generation
Fig. 16 Audio Output Interface
Fig. 17 External Memory Access
Fig. 18 Microprocessor/Microcomputer Interface
Fig. 19 PIC 1650/AY-3-8910 System Example
Fig. 20 CP1600/1610/AY-3-8910 Interface
Fig. 21 M6800/AY-3-8910 Interface
Fig. 22 8080 S100 Bus/AY-3-8910 Interface
Fig. 23 Equal Tempered Chromatic Scale
Fig. 24 Chord Selection Chart
Fig. 25 Organ Envelope Generation
Fig. 26 Organ Rhythm Generation
Fig. 27 European Siren Sound Effect Chart
Fig. 28 Gunshot Sound Effect Chart
Fig. 29 Explosion Sound Effect Chart



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