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General Category => Amstrad CPC hardware => Topic started by: genesis8 on 17:45, 05 October 21

Title: Discussion about a AY-LPT on Vogons (aka OPL2LPT...)
Post by: genesis8 on 17:45, 05 October 21
See https://www.vogons.org/viewtopic.php?f=62&t=83556 (https://www.vogons.org/viewtopic.php?f=62&t=83556)
Title: Re: Discussion about a AY-LPT on Vogons (aka OPL2LPT...)
Post by: RetroCPC on 17:20, 07 October 21
You might have issues with using sucha device as the CPC Printerport is only 7bits not the full 8 Bits as D7 is Grounded...

Not sure if your AY interface needs the full 8bits, but I suspect it might...
Title: Re: Discussion about a AY-LPT on Vogons (aka OPL2LPT...)
Post by: genesis8 on 18:42, 07 October 21
You might have issues with using sucha device as the CPC Printerport is only 7bits not the full 8 Bits as D7 is Grounded...

Not sure if your AY interface needs the full 8bits, but I suspect it might...
In this case, like the OPL2LPT, OPL3LPT, etc..., it's using an AY as a sound card on the PC using the printer port, not on Amstrad CPC : imagine composing CPC music with Arkos Tracker and playing it without sound emulation but with the real sound chip.

Anyway, on the wiki there are several solutions listed to transform the 7bit printer port of the CPC to a 8bit one.
Title: Re: Discussion about a AY-LPT on Vogons (aka OPL2LPT...)
Post by: XeNoMoRPH on 22:01, 07 October 21
Just a few days ago, I received a homemade OPL2LPT card that a good friend made for me:

(https://i.ibb.co/wcXrQxy/photo-2021-10-06-15-25-34.jpg)(https://i.ibb.co/3y61LST/photo-2021-10-05-17-01-55.jpg)

With msdos works fine, I also have the Willy adapter from @PulkoMandy (https://www.cpcwiki.eu/forum/index.php?action=profile;u=26) , I have tried to test it in the CPC, but if I give power to the OPL2PLT card, the CPC does not power on, I think it is one of the buses or something like that.

(https://i.ibb.co/qpTSNvB/photo-2021-09-21-11-03-24.jpg)