yevgeniy-olexandrenko/avr-ay-board

The replacement board for the AY-3-8910/AY-3-8912/YM2149F sound chip. Compatible with https://www.avray.ru project firmware.

avr-ay-board's Issues

files to programe atmega..

i'm not sure what files are needed to program the Atmega for an ay-3-8012 ? if you could add instructions in firmware area in a doc form.. thanks..

AVRDUDE and which firmware to use

I have never used AVRDUDE but have installed it, I built this board with ATMEGA88PA-AU and a 27.000mhz crystal, there is many diferent firmwares in the github file, I do not know which I need to use, can anyone tell me the comand I need to use in AVRDUDE to upload the firmware and the fuse settings.
thanks

Crystal in BOM isn't called out

Hello! I was checking the BOM and can't seem to find any info on the crystal. Checking the datasheet for the AVR and it calls out that anything about 6pf would need caps to attempt equal the loading. I can't seem to find any crystals that are 6pf and 27MHz and the part number of "RG11-1732" from the pic of the project doesn't seem to be searchable online.

Can you please let me know what is the part number of the crystal used? Thanks!

Henry

Atmega fuse settings, and jumper settings for 1.3 board.

Hi,
Does anyone know what the fuses should be set to for this project to work properly? I can't seem to find them in the github documentation for the project. I did find the following settings in the AY_Emul version 26 archive on http://www.avray.ru ...

...
ATMEGA88 ====================================================
avrdude -p m88 -c USBasp -U flash:w:AY_Emul_XXX_Nch_KK_MM.hex -U eeprom:w:Conf_XXX_YYMHz_ZZMhz.hex -U lfuse:w:0xee:m -U hfuse:w:0xdd:m -U efuse:w:0xff:m
Example:
avrdude -p m88 -c USBasp -U flash:w:AY_Emul_250_2ch_m88_ay.hex -U eeprom:w:Conf_standard_27MHz_1_75Mhz.hex -U lfuse:w:0xee:m -U hfuse:w:0xdd:m -U efuse:w:0xff:m
...

Also, do J1 and J2 need to be shorted for programming? I was able to program the device whether or not they were shorted, so I am unsure what they are for.

Thanks very much in advance for your help!

Missing informations about the differences between hardware versions V1.1 an V1.2

Hi!

Thanks for publishing this project but can you add a change log, where we can see what changed from one version to the next one (and why)? As far as I can tell, the PCB hasn't changed, with the exception of the footprint of R4-R6, which replaced C4-C6 in the filter section. Both PCB should be compatible then.

Cheers,

Taki

no board markings

Just recieved the pcb's but no R1,C1 etc printed on the board, which component goes where?