This software can play music in AY-3-8910 using PIC16F57/59.
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Plays RSF file from I2C EEPROM
Plays RSF file and press button to skip the song.
EEPROM data structure is:
01-07: Address High, Low of song 1 to 4
data is headderless RSF (starts with 3F FF) and append EOF(FD) at the end of the each song.
See "16krom". -
Tests PSG IC while startup
If LED light up while startup sound playing, it is AY-3-8910 or clone.
If it turns off, it is YM2149.
Also, If IOA3 is high while start up, IOB is '10101010' or else, '01010101'. -
Tests and disables PIC
If button was pressed while startup, LED will blink about 5 seconds and turns off. After that, all PIC pins interfacing to AY will be Hi-Z state. It enables use AY-3-8910 with Arduino.
Note: SDA and SCL needs 10k pullup!
| PIC | AY-3-8910 | Others |
|---|---|---|
| RC0 | DA0 | |
| RC1 | DA1 | |
| RC2 | DA2 | |
| RC3 | DA3 | |
| RC4 | DA4 | |
| RC5 | DA5 | |
| RC6 | DA6 | |
| RC7 | DA7 | |
| RA0 | LED | |
| RA1 | BC1 | |
| RA2 | (BC2) | |
| RA3 | BDIR | |
| RB0 | 24FC512 SDA | |
| RB1 | 24FC512 SCL | |
| RB2 | RESET_ | |
| RB3 | tact switch | |
| MCLR | Vdd | |
| CLKIN | 74HCU04 clock out | |
| Vdd | Vcc | +5V |
Clock circuit:
| 74HCU04 | 74HC74 | Others |
|---|---|---|
| 1A | Crystal 3.58MHz pin 3 | |
| GND | Crystal 3.58MHz pin 2 | |
| 1Y-2A | Crystal 3.58MHz pin 1 | |
| 2Y | 1CK | PIC CLKIN |
| 1D-1Q_ | ||
| 1Q | AY-3-8910 CLOCK | |
| 1CLR_-1PR_ | Vcc |
| AY-3-8910 | Filter | 3.5mm Jack |
|---|---|---|
| Channel A | 10k~20kohm | Left |
| Channel C | 10k~20kohm | Left |
| Channel C | 10k~20kohm | Right |
| Channel B | 10k~20kohm | Right |
| GND | 820pf~1000pf | Left |
| GND | 820pf~1000pf | Right |
RSF file can generate from AVR-AY Player
If you want to build from source, you need to use MPASM(not a XC8 ASM).
If you don't have EEPROM writer, use Raspberry Pi and EEProg
When flashing 16F57/59 with PICSTART Plus, you need to float CLKOUT pin. Or you can use pickle(but require 13V).
Example PCB design and BOM list, CPL file is available.
sample ROM file contains "Touhou Zero Track 1" by Gogin.
EEPROM routine by nagoyacoder
YMZ294 routine by hijiri~
I can't find a license of these routines, but they takes for "sample source".
So I will take this software for "sample source" ...