Difference between revisions of "AY"
From CPCWiki - THE Amstrad CPC encyclopedia!
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| − | AY is the nickname of the AY-3-8910 programmable sound generator family. | + | AY is the nickname of the AY-3-8910 programmable sound generator family. The Amstrad CPC sound processor is more exactly the AY-3-8912. |
| − | + | ||
| − | The Amstrad CPC sound processor is more exactly the AY-3-8912. | + | |
| − | + | ||
This chip was very popular and was used in a lot of machines. | This chip was very popular and was used in a lot of machines. | ||
| + | [[MSX]], [[ZX Spectrum]], [[Atari| Atari ST]], [[Oric]]... all used chips from this family (sometimes it was the YM variant instead of AY...). The YM variant differed only in the hardware envelopes where it used 32 steps compared to 16 steps for the AY. | ||
| − | + | As a result it is still quite popular in the actual Chip Tune movement as a vintage sound processor. | |
| − | + | Many [[Chip Tune]] sites include AY files. | |
| − | + | Alas, the [[ZX Spectrum]] is more often used as reference. But a huge library is available. | |
| − | + | ||
| − | + | ||
==Amstrad Plus specificity== | ==Amstrad Plus specificity== | ||
| − | The Amstrad Plus range include DMA sound channels. Each HSYNC, 1 instruction per active DMA channel is read. Each channel executes an instruction which allowed looping and sending data to AY registers. Each DMA channel is effectively | + | The Amstrad Plus range include DMA sound channels. Each HSYNC, 1 instruction per active DMA channel is read. Each channel executes an instruction which allowed looping and sending data to AY registers. Each DMA channel is effectively an AY register playlist and once started is executed without CPU intervention. It was meant to reduce the strain on the CPU. |
| − | This feature offered extra capabilities including | + | This feature offered extra capabilities including 15 kHz sample playback. |
==Technical references== | ==Technical references== | ||
*[[Datasheet AY-8913]] on CPCwiki. | *[[Datasheet AY-8913]] on CPCwiki. | ||
| + | *[[Media:GI_AY-3-8910_Feb-1979.pdf|General Instrument AY-3-8910/8912 Datasheet (1979)]] | ||
| + | *[[Media:AY-3-891x_-_Technical_Specification.pdf|General Instrument AY-3-891x Technical Specification]] | ||
| + | == Chip tune == | ||
| + | Check the [[Chip Tune]] page. | ||
| + | |||
| + | == Emulators == | ||
| + | |||
| + | Many emulation software does exist in order to play chiptunes from AY-YM on you modern machines. | ||
| + | |||
| + | * ZX spectrum computer sound chip emulator :[http://bulba.untergrund.net/emulator_e.htm there!] | ||
| + | * Project AY at worldofspectrum.org [http://www.worldofspectrum.org/projectay/ayplayers.htm there!] | ||
| + | * Arkos Tracker to compose tunes for CPC on modern PCs : [http://www.julien-nevo.com/arkos/tools.html there!] | ||
| + | |||
| + | == Peripherals == | ||
| + | |||
| + | * a lot of projects using tools such as [[Arduino]] hardware would include AY chips, as those are widely well known and iconic of so many old school computers... and quite easy to connect on electronic circuits. | ||
| + | {{#ev:youtube|iarcYHJ6uFI|300}} | ||
| + | |||
| + | * [[PlayCity]] : a modern card (2014) that can enable to add 2x AY compatible chips to add 2x3 soundchannels, those AY can have their clokcing set in various frequencies and would benefit from some extra compinents advantages so they don't use that much CPU from the CPC. | ||
| + | {{#ev:youtube|B8-MoO1VJx4|300}} | ||
==Links== | ==Links== | ||
*[http://en.wikipedia.org/wiki/General_Instrument_AY-3-8910 Wikipedia's opinion on the matter...] | *[http://en.wikipedia.org/wiki/General_Instrument_AY-3-8910 Wikipedia's opinion on the matter...] | ||
| − | |||
| − | |||
==Some Chip Tunes sites== | ==Some Chip Tunes sites== | ||
| Line 37: | Line 51: | ||
*[http://www.creamhq.de/ymrockerz/ YM rockerz...] the same concept, but with the YM, so the Atari version. | *[http://www.creamhq.de/ymrockerz/ YM rockerz...] the same concept, but with the YM, so the Atari version. | ||
| + | |||
| + | *[http://ultrasyd.free.fr/ ultrasyd.free.fr] Ultrasyd's Website. | ||
[[Category:Music and sound| ]][[Category:Electronic Component]][[Category:CPC Internal Components]] | [[Category:Music and sound| ]][[Category:Electronic Component]][[Category:CPC Internal Components]] | ||
Latest revision as of 15:35, 12 August 2023
AY is the nickname of the AY-3-8910 programmable sound generator family. The Amstrad CPC sound processor is more exactly the AY-3-8912. This chip was very popular and was used in a lot of machines.
MSX, ZX Spectrum, Atari ST, Oric... all used chips from this family (sometimes it was the YM variant instead of AY...). The YM variant differed only in the hardware envelopes where it used 32 steps compared to 16 steps for the AY.
As a result it is still quite popular in the actual Chip Tune movement as a vintage sound processor.
Many Chip Tune sites include AY files.
Alas, the ZX Spectrum is more often used as reference. But a huge library is available.
Contents
Amstrad Plus specificity
The Amstrad Plus range include DMA sound channels. Each HSYNC, 1 instruction per active DMA channel is read. Each channel executes an instruction which allowed looping and sending data to AY registers. Each DMA channel is effectively an AY register playlist and once started is executed without CPU intervention. It was meant to reduce the strain on the CPU.
This feature offered extra capabilities including 15 kHz sample playback.
Technical references
- Datasheet AY-8913 on CPCwiki.
- General Instrument AY-3-8910/8912 Datasheet (1979)
- General Instrument AY-3-891x Technical Specification
Chip tune
Check the Chip Tune page.
Emulators
Many emulation software does exist in order to play chiptunes from AY-YM on you modern machines.
- ZX spectrum computer sound chip emulator :there!
- Project AY at worldofspectrum.org there!
- Arkos Tracker to compose tunes for CPC on modern PCs : there!
Peripherals
- a lot of projects using tools such as Arduino hardware would include AY chips, as those are widely well known and iconic of so many old school computers... and quite easy to connect on electronic circuits.
{{#ev:youtube|iarcYHJ6uFI|300}}
- PlayCity : a modern card (2014) that can enable to add 2x AY compatible chips to add 2x3 soundchannels, those AY can have their clokcing set in various frequencies and would benefit from some extra compinents advantages so they don't use that much CPU from the CPC.
{{#ev:youtube|B8-MoO1VJx4|300}}
Links
Some Chip Tunes sites
- The AY riderz a "famous" Speccy music group.
- YM rockerz... the same concept, but with the YM, so the Atari version.
- ultrasyd.free.fr Ultrasyd's Website.
