Editing POKEY (section)

== Versions ==
By part number:
* C012294 &mdash; Used in all [[Atari 8-bit computers]], including the [[Atari XEGS]], and the [[Atari 5200]] console. The suffix on the chip refers to the manufacturer:
**C012294B-01 &mdash; AMI
**C012294-03 &mdash; Signetics 
**C012294-19 &mdash; National Semiconductor
**C012294-22 &mdash; OKI
**C012294-31 &mdash; IMP
*137430-001 &mdash; Part number sometimes used in Atari arcade machines for POKEY.
* 137324-1221 &mdash; Quad-Core POKEY used in Atari arcade machines ''[[Major Havoc]]'', ''[[I, Robot (video game)|I, Robot]]'', ''[[Firefox (video game)|Firefox]]'', and ''[[Star Wars: Return of the Jedi (video game)|Return of the Jedi]]''.<ref>{{Cite web|url=https://forums.arcade-museum.com/showthread.php?t=390819&page=2|title=Atari Pokey Differences|date=16 November 2016 }}</ref>

Atari used several different manufacturers for the chip, however AMI produced most of them in 1983 onward. Early chips were manufactured on a 5 micrometer process, this was later shrunk to 3 micrometers. AMI-produced POKEYs have been reported as having a high failure rate compared with other brands of the chip; the reasons for this are unclear, but speculated to be a fault of the chip packaging or bonding wires. Some limited success in reviving nonfunctional POKEYs by heating them in an oven has been reported. There also exist modern FPGA replacements such as POKEYOne.<ref>{{cite web | url=https://forums.arcade-museum.com/threads/atari-pokey-chip-replacements-and-possible-fix.464086/page-4 | title=Atari Pokey chip replacements and possible fix | date=11 January 2020 }}</ref>