Re: Commodore 65 and DIN8 cable

From: Michał Pleban <lists_at_michau.name>
Date: Thu, 03 Mar 2016 14:13:54 +0100
Message-ID: <56D83892.2000007@michau.name>
Hello!

Julian Perry wrote:

> I'd be more than reluctant to start attacking a C65 board with a
> soldering iron, just to get external peripherals going. (I assume only
> the output lines are a problem)
> Perhaps it would be better to buffer the output lines, either with some
> external device on a short tail, or piggybacked off the main board
> internally.

This is the input line, not an output (it's data line from disk drive to
the computer). And it is shared between the internal and external drive.

Perhaps a stronger output buffer could be placed at the internal drive
so that it would drive the line stronger. But it would require modifying
the drive, and still it doesn't explain why Bo's computer works.

Or maybe some kind of external buffering device between the cable and
the computer, but since this is a shared input which can be also driven
by the internal drive, this would be nontrivial.

Regards,
Michau.


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