CP/M TCP/IP (was Re: CP/M coding question)

From: Pat Finnegan <pat_at_purdueriots.com>
Date: Thu May 30 09:30:37 2002

On Thu, 30 May 2002, Glen Goodwin wrote:

> > From: Pat Finnegan <pat_at_purdueriots.com>
>
> > What I'm looking to do is provide a (small) SLIP or PPP based TCP/IP
> stack
> > for a machine that will stay resident and can be used by CP/M 2.2 [or
> > perhaps MP/M II] user programs.
>
> Pat --
>
> I would be extremely interested to learn of your progress in this area.
> Please keep us posted, or contact me off-list.

I'm starting to have some second thoughts about how I'm going to do this.
I'm considering an external 'black box' that will connect to a PPP server
on one end and have a RS-232 connection on the other that will provide
something like a serialized verion of BSD's sockets. I'm also thinking
about implementing a raw tcp port that would connect to an extra RS-232
port [optionally password protected] that could be used to attach to the
system's console, and replicate it on the other end of the network.

Right now I'm looking at either a Z80 with 32k of ram, 16k of flash, a CTC
and one or two DUARTS, or a uC that'll provide as much of that in hardware
as possible. PICs are nice, but generally seem to have too little memory
for TX/RX buffers, and Basic stamps are too slow. (and who wants to
program in BASIC anyways?)

Any suggestions on a good uC to use?

-- Pat
Received on Thu May 30 2002 - 09:30:37 BST