[91U]

Atari external sync test. An Atari 800XL is sync'ed with a DR-55 drum machine which is triggering some semi-random notes from the Atari's POKEY chip. This is all being done with an interrupt handler (the sync pulse comes in on the BREAK key) — you can hear the Atari keyclick sounds in this recording because the computer operator is POKEing values into memory from BASIC while the test is running.

alph:interface → 
http://alph.io/interfaces/fragment
http://alph.io/interfaces/describe
http://alph.io/interfaces/link
duration → 00:02:35.721000
@id → http://alph.laemeur.com/snd/Atari/91U
license → http://laemeur.com/copyright
@type → MediaObject
fileFormat → audio/webm
creator → 
name → Adam Moore
email → adam@laemeur.com
url → http://purl.org/laemeur
alternateName → LÆMEUR
copyrightHolder → 
name → Adam Moore
email → adam@laemeur.com
url → http://purl.org/laemeur
alternateName → LÆMEUR
@context → 
http://schema.org
http://alph.io/terms.jsonld
description → Atari external sync test. An Atari 800XL is sync'ed with a DR-55 drum machine which is triggering some semi-random notes from the Atari's POKEY chip. This is all being done with an interrupt handler (the sync pulse comes in on the BREAK key) — you can hear the Atari keyclick sounds in this recording because the computer operator is POKEing values into memory from BASIC while the test is running.

links → 
verified → 2019-01-13T18:25:50.452036
id → http://alph.laemeur.com/snd/Atari/#element(3/8/2/2/1/1)
type → weblink