Re: Adding disk on V245

Yes, it's a Prolific running on Ubuntu.

On Wed, Nov 23, 2016 at 2:05 PM, John D. Baker <[email protected]>
wrote:

> Off-topic, but peripheral(!) to the discussion:
>
> On Wed, 23 Nov 2016 09:42:57 -0500, Kurt Lidl wrote:
>
> > On Wed, Nov 23, 2016 at 12:39:04AM -0700, Gordon Zaft wrote:
> > > I can't get into firmware on this right now as the serial port it's
> > >on for console is a crappy USB that doesn't seem to pass along a
> > > BREAK :-(.
>
> Which USB-RS232 adapter is that, so we can know to avoid it?  (I've been
> fortunate that all the ones I've encountered so far will send BREAK, at
> least under NetBSD.  Under MacOS X (10.4.11 PPC), only the KeySpan
> adapters will send BREAK--the ProLific ones didn't when I tried them).
>
> > The old-school way of doing this is to set the baud rate to 50,
> > and then keep sending ctrl-@.  Which ought to send enough zero
> > bits to make a 9600 bps console think 'break' was sent.  Then
> > switch back to 9600 bps.
>
> Unfortunately, USB-RS232 dongles are likely to be unable to set a speed
> below about 300bps (maybe higher).  A friend of mine discovered this
> empirically while building current-loop adapters for his ASR-33 TeleType.
> Its upper limit of 110baud was lower than his USB-RS232 dongle allowed.
> (The serial port of a Tandy 200 did the job, though.)
>
> --
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>


-- 
Gordon Zaft
Province 35 Governor
Phi Mu Alpha Sinfonia Fraternity
[email protected]