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List:       newtontalk
Subject:    Re: [NTLK] USB to Newton Interconnect cables
From:       David Arnold <davida () pobox ! com>
Date:       2016-02-11 10:42:42
Message-ID: F057BC63-006F-4234-90E2-A6B6471A9A03 () pobox ! com
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> On 11 Feb 2016, at 08:39, Matthias Melcher <mm@matthiasm.com> wrote:
> 
> Sorry, again, late to the game. A few thoughts, if I may:
> 
> * Use the "normal" port. If you use the modem port or the keyboard port, users will \
> have to get software onto their machine to use you cable, but need your cable to \
> get software on it. Back to the hen-and-egg problem at least for ne users.

I agree.

> * If you use and FTDI, adding a differential driver is not a huge problem, and \
> increases transmission quality greatly

Not that it should matter for the likely <5cm distance it'll need to travel from \
driver to driver, but still.

> * Remember "slowdown.exe" on Windows machines? NewtonOS has a bug that misses bytes \
> on the serial port if the timing is different from the old Mac connections. Before \
> you order PCBs, make sure that your boards manage to get the timing right, and \
> large packets transfer well, and you can create and restore backups (the most \
> demanding serial port action).

I'll definitely give the prototypes a workout.

> Hope that helps. Much success!

Thanks!



d

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