Importing binary files without removable storage nor non-bundled software (was: TKermitFTP

[Vintage Computer Festival]

On Thu, 6 Jan 2005, Dwight K. Elvey wrote:

>  In the past when I wanted a non-block binary transfer,
> I often had some value that I used as an escape character.
> I'd choose a low frequency value to improve throughput.
> It is simple, If you want to send a command value, you
> send the escape character, first. If you just wanted the escape
> character, you'd send it twice. For 8 bit data, you
> had 255 commands. EOF could be one of those.
>  It makes a simple protocol that is easy to implement in
> code.

A perfectly good and simple protocol for a simple serial interface (i.e.
2 or 3 wires max).  But I submit that the BREAK signal could have been
used, which is inline and is part of the RS232 spec for this very reason.

Anyway, dead horse is now a pile of fur.  The ants are already back in
their hole and the flies have long since flown away.

-- 

Sellam Ismail                                        Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger                http://www.vintage.org

[ Old computing resources for business || Buy/Sell/Trade Vintage Computers   ]
[ and academia at www.VintageTech.com  || at http://marketplace.vintage.org  ]