Amplibus alternative - Microdisc Interface - Cumulus help?

This is the right place to discuss on how to implement hardware vsync, adding a VIA or AY chipset, puting multiple roms, or how to design a new flash expansion card.
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Steve M
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Amplibus alternative - Microdisc Interface - Cumulus help?

Post by Steve M » Thu Jun 18, 2015 12:18 pm

Found details of this project in my paperwork. I think it is from Théoric - apologies to DBug - but this has English translation, nto found in ThéOric downloads.

Has anyone built it? Does it work well with Cumulus ???
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microdisc interface004.jpg
microdisc interface003.jpg

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Steve M
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Re: Amplibus alternative - Microdisc Interface - Cumulus hel

Post by Steve M » Thu Jun 18, 2015 12:19 pm

Layout
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microdisc interface005.jpg

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Steve M
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Re: Amplibus alternative - Microdisc Interface - Cumulus hel

Post by Steve M » Thu Jun 18, 2015 12:21 pm

Here's the original French version - Delete if necessary !
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microdisc interface001.jpg

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Re: Amplibus alternative - Microdisc Interface - Cumulus hel

Post by Steve M » Thu Jun 18, 2015 12:26 pm

page two
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microdisc interface002.jpg

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Re: Amplibus alternative - Microdisc Interface - Cumulus hel

Post by iss » Thu Jun 18, 2015 2:52 pm

Thanks! Nice article and I'll try it. Actually it should be the same as 'internal' PH2 amplifier.
Here interesting and bit strange is the usage of 3 buffers in parallel - normally such connection
should be made with 'open collector' elements (for instance 7407) and common resistor to Vcc.
Using 74126 can lead to self damage of the chip, but it will not burn the Oric :).

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