Re: Commodore 65 and DIN8 cable

From: Michał Pleban <>
Date: Fri, 29 Jan 2016 11:37:32 +0100
Message-ID: <>
Hello! wrote:

> Open ended (and possibly also unshielded) wires never do any good to
> signal quality. They are nice antennas, which will add whatever
> electromagnetic smog flies around you to the signal but will also try to
> radiate your signal out. None of these helps. Termination - the drive
> should provide it, similar to what was a standard in SCSI devices.
> Still, I wouldn't bet all of them do. I wouldn't be surprised if some
> were cost reduced because it still worked in basic cases. How to make
> own? Either check the older, still standard compliant implementations or
> maybe checking the original SCSI devices?

I suppose the Amiga drive which I will be using has some kind of
termination, but right now I just have an open ended cable where I play
with the oscilloscope to learn how the signals are sent to the drive...

But this gave me an idea - measure the resistance between DISK_RD and
Vcc or GND on the drive, maybe that will give me some idea :-)


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Received on 2016-01-29 11:02:28

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