POKEY sound chip experiments

http://hotchk155.blogspot.com/2010/03/pokey-sound-chip-experiments.html for more info.
The Atari POKEY was the classic soundchip in the Atari 8-bit home computers and many 1980's arcade games. This clip shows some of my experiments in driving a POKEY from MIDI. A PIC receives MIDI data and two 74HC595 shift registers are used to assemble the 12 lines of bus data for the POKEY so it can be driven from a humble 14 pin PIC16F688. A 6N139 isolator is placed between MIDI in from PC and the PIC's serial input. The POKEY is clocked at 2MHz from the PIC's internal clock output.

I am using REAPER to sequence some MIDI files I found on the internet. Credit goes out to the authors of these MIDI files.. also to YouTube member little-scale, whose clips inspired me to poke about with the POKEY in the first place, and Bryan Edewaard, whose crib sheet I could not have done this without.

Category:

Science & Technology

Tags:

• pic
• pokey
• midi
• microcontroller
• mcu
• chip
• tune

[RabbidMickeyMouse]

I'd love to see the source if you're willing to share it. I'd like to port this to the Arduino if I could.

[hotchk155]

yeah I am working on a schematic and will post with source in next day or 2

[hotchk155]

Have posted it... see link in clip info

[RabbidMickeyMouse]

That's odd. Looks like a strange double post glitch from the site.

Anyhow, sorry I didn't thank you earlier. It's great to see whatever projects' source dealing with the Pokey that I can. Thank you very much.

[RabbidMickeyMouse]

Thanks! You're been very helpful.