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Amdrum

70 bytes added, 11:35, 28 September 2022
clean-up
[[Image:Amdrum.JPG|thumb|250px|Box and Manual for the Amdrum]]
The Amdrum is a an 8bit D/A converter (hardware) with drumkit (software), made by the British company [[Cheetah]].
Quality of the playback was nice, considering the time and price. The samples were read from the suplied tapes. There were serveral tapes with different themes. Along with the Amdrum came a sequencing program. It was possible to copy the samples to disc, but the sequencing program had to be patched! Amdrum was probably Cheetahs version of the SpecDrum (As revealed on the PCB "AMSTRAD SPECDRUM"). Aside of Cheetahs own sequencer you can use some commands of the RSX ROM for [[LambdaSpeak III ROM|LambdaSpeak III]] to use the Amdrum.
The samples were read from the suplied tapes. There were serveral tapes with different themes. Along with the Amdrum came a sequencing program. It was possible to copy the samples to disc, but the sequencing program had to be patched! Amdrum was probably Cheetahs version of the SpecDrum (As revealed on the PCB "AMSTRAD SPECDRUM") No other software than Cheetahs own sequencer is know to use the Amdrum. Now, thanks to Jose Leandro, the hardware specialist of the spectrum, with his famous page :
http://trastero.speccy.org/cosas/JL/JL.htm
|74LS32N||Quad 2-input OR||Port decoding, /DAC_WRITE when /ADDR_MATCH, /IORQ, /WR all LOW
|-
|SN74LS04N||Hex Inverters||purpose unknown? (used in the analog partCharge pump circuit, not used to create negative voltage rail for Port decoding)the op amp
|-
|TL064CDP||Quad Operational Amplifier||no info how the 4 amplifier stages are used?Buffer and low pass filter
|-
|Ferranti ZN428E-8||8bit DAC||mono one-channel 8bit D/A converter (unsigned samples)
<gallery caption="Amdrum Layout, thanks to Jose Leandro">
File:Amdrum - interface_delante.jpg|Amdrum - Front Box
File:Amdrum - interface_detras.jpg|Amdrum - Back Box
File:Amdrum - cara_componentes.jpg|Amdrum - Components
File:Amdrum - cara_pistas.jpg|Amdrum - Tracks
File:Amdrum PCB.png|Amdrum - PCB Front
File:Amdrum Layout.png|Amdrum - Layout
</gallery>
== Kits Reviews / Commercials ==
<gallery caption="Commercials for the Amdrum">
{| class="wikitable sortable" style="width:100%"|''Title''||''Front Covertape''||''Back Covertape''||''Tape Side A''||''Tape Side B''|- |[[Afro Kit]]||[[Image:Afro Kit 1amdrum commercial.jpg|120px]]||[[Image:Afro Kit 2.jpg|120px]]||[[Image:Afro Kit Tape A.jpg|120px]]||[[Image:Afro Kit Tape B.jpg|120px]]Commercial for Amdrum|- |[[Electro Kit]]||[[Image:Electro Kit 1Amstrad Computer User8610028.jpg|120px]]||Review of the Amdrum in [[Image:Electro Kit 2.jpg|120pxAmstrad Computer User]]|||||- |[[Latin Kit]]||[[Image:Latin Kit 1Amstrad Computer User8610029.jpg|120px]]||[[Image:Latin Kit 2.jpg|120px]]|||||- |}   <gallery caption="Afro Kit - Errata"> Image:Afro Kit ErrataAmstrad Computer User8610030.jpg|Afro Kit Errata
</gallery>
== Tapes == === Amdrum Tape ===
<gallery caption="Amdrum Tape">
</gallery>
=== Afro Kit Tape =Kits ==
<gallery caption="Afro Kit Tape">
{| class="wikitable sortable" style="width:100%"|''Title''||''Front Covertape''||''Back Covertape''||''Tape Side A''||''Tape Side B''|-|[[Afro Kit]]||[[Image:Afro Kit 1.jpg|120px]]||[[Image:Afro Kit 2.jpg|120px]]||[[Image:Afro Kit Tape A.jpg|120px]]||[[Image:Afro Kit Tape side AB.jpg|120px]]|-|[[Electro Kit]]||[[Image:Afro Electro Kit 1.jpg|120px]]||[[Image:Electro Kit 2.jpg|120px]]||[[Image:Electro Kit Tape A.jpg|120px]]||[[Image:Electro Kit Tape B.jpg|Afro 120px]]|-|[[Latin Kit]]||[[Image:Latin Kit 1.jpg|120px]]||[[Image:Latin Kit 2.jpg|120px]]||[[Image:Latin Kit Tape A.jpg|120px]]||[[Image:Latin Kit Tape side B.jpg|120px]]|-|}
</gallerycaption="Afro Kit - Errata">
=== Electro Kit Tape === <gallery caption="Electro Kit Tape"> Image:Electro Afro Kit Tape AErrata.jpg|Electro Afro Kit Tape side AImage:Electro Kit Tape B.jpg|Electro Kit Tape side B </gallery> === Latin Kit Tape === <gallery caption="Latin Kit Tape"> Image:Latin Kit Tape A.jpg|Latin Kit Tape side AImage:Latin Kit Tape B.jpg|Latin Kit Tape side B </gallery>  == Manual == * [[Media:Amdrum Manual.pdf|Amdrum Manual]] (pdf) == Reviews / Commercials == <gallery caption="Commercials for the Amdrum"> Image:amdrum commercial.jpg|Commercial for AmdrumImage:Amstrad Computer User8610028.jpg|Review of the Amdrum in [[Amstrad Computer User]]Image:Amstrad Computer User8610029.jpgImage:Amstrad Computer User8610030.jpgErrata
</gallery>
{{#ev:youtube|m6R_W9CZWGU|400}}
 
== Manual ==
 
* [[Media:Amdrum Manual.pdf|Amdrum (Cheetah) Manual]] {{EN}} {{PDF}}
== Download ==
* [[Media:Amdrum (Eagle).zip|Amdrum (Eagle).zip]] (Amdrum files for Eagle)
== Links Weblinks ==
* [http://www.cpc-power.com/index.php?page=detail&num=4294 ''Amdrum'' from CPC-Power]
* [http://www.cpc-power.com/index.php?page=detail&num=4313 ''Amdrum Electro kit'' from CPC-Power]
* [http://www.cpc-power.com/index.php?page=detail&num=4311 ''Amdrum Latin kit'' from CPC-Power]
* [https://cpcrulez.fr/hardware-audio-amdrum_AA.htm ''Amdrum'' from CPCrulez]* [http://hardware.speccy.org/temp/Amstrad-Amdrum.html ''Amdrum'' from hardware.speccy.org]
* [http://www.engadget.com/2005/10/28/music-thing-the-zx-spectrum-specdrum-module/ Site about the SpecDrum]
* [http://www.crashonline.org.uk/27/specdrum.htm Review of the Spectrum version]
* [http://www.worldofspectrum.org/hardware/feat42.html Another Spectrum review]
[[Category:Peripherals]] [[Category:Music and sound]] [[Category:Manual]][[Category:Video contents]]
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