Re: plip for elks?

[David Given]

[...]
The problem with PLIP in ELKS will be finding XTs with bi-directional
parallel ports.

And finding 8-bit parallel add-on cards that support bi-directional
transfers.

You only need bi-directional parallel ports for byte-mode transfers. If you're willing 
to settle for nibble-mode transfers, four bits at a time, you can use any parallel 
port. Nibble-mode uses four of the data lines for outgoing and the four status lines 
for incoming, plus (possibly) a couple of extra lines for handshaking. It's slower, 
but frankly, worrying about being slow on an XT is like worrying about drowning in the 
desert.


-- 
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Re: plip for elks?

[Riley Williams]

Hi Jonathan.

  We're gonna need a tcp/ip stack first. A plip driver won't be that
  hard, but we need something for it to sit on.

  The problem with PLIP in ELKS will be finding XTs with
  bi-directional parallel ports.

Whilst PLIP will make good use of bidirectional parallel ports, it
doesn't need them as it can use the so-called LapLink protocol that
turns a unidirectional parallel port into a bidirectional 4-bit port.
Memory says it makes use of five of the status lines as inputs that
are connected to five of the data lines at the other end, and that
gives four data lines and a strobe signal each way.

  And finding 8-bit parallel add-on cards that support
  bi-directional transfers.

Given a 286 based system, the 16-bit EPP cards that are common in the
local emporiums round here can easily be used, so that's unlikely to
be a headache...

Best wishes from Riley.

+--+
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| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this  feature, but I bet someone |
| else has already done so and is just about to release their patch.   |
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plip for elks?

[Mark-Andres Hohm]

Hi,

is a PLIP driver for elks availible?

gez. sachse