home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!n8emr!uncle!jcnpc!kumiss!erd
- From: erd@kumiss.cmhnet.org (Ethan Dicks)
- Subject: Re: Systems with networking standard
- Newsgroups: comp.sys.amiga.datacomm
- References: <1992Nov18.221128.24724@fcom.cc.utah.edu>
- X-Newsreader: TIN [version 1.1 PL6]
- Message-ID: <erd.04sc@kumiss.cmhnet.org>
- Date: 22 Nov 92 19:14:29 EDT
- Organization: Not an Organization
- Lines: 43
-
- Val Kartchner (val@news.ccutah.edu) wrote:
- :
- : I think that standard networking is important in a computer system. I've
- : brought it up before, and I'll bring it up again.
-
-
- : Is there some hardware guru who could build us an
- : inexpensive bus type network interface? It wouldn't have to be expensive
- : or fast, but it should allow aa large number of computers to connect. The
- : parallel and serial ports are usually used, but has anyone considered the
- : disk drive port?
-
- Jeff Easton and I have come up with the first (almost second) draft of
- a proposal to interconnect Amigas via a twisted-pair ArcNET adapter
- for the parallel port, using the COM20020 chip. The chip itself is
- 90%+ of the hardware required to implement ArcNET. Some glue logic
- is needed to allow the CPU to access the chip's registers, a 20Mhz
- clock is required, as well as some media interface circuit. There
- is a single chip, +5v only RS-485 driver chip which costs <$2 in
- quantity 1. The COM20020 costs ~$10-$15 each. A TTL clock oscillator
- or a 20Mhz crystal are <$5. The hardware is available and cheap. There
- is no software.
-
- Jeff and I have been discussing for some time how the software would
- work. One possibility is to simply wait until such time as C= releases
- the next AS225 package and write a driver. Another possibility is
- to adapt DNet/ParNet. A third possibility is to adapt AmigaNOS.
-
- I am quailified to write the software; I have insufficient time
- right now (I may have more time in the upcoming months, however).
- I do have the parts *in my house* to assemble a few prototypes.
- What *I* need most is some idea about which direction to take.
- (second most is an example of using the CIAs in a system friendly
- manner :-) I think I need input more than I need assistance right
- now; perhaps as the project gets a more solid definition, additional
- labor might be useful.
-
- Comments? Suggestions? Flames?
-
-
- -ethan
-
-
-