Digest Articles Dual Adapter for Poqet? by Mel Zwillenberg <75746.3705@xxxxxxxx> From: Mel Zwillenberg <75746.3705@xxxxxxxx> Subject: Dual Adapter for Poqet? Date: 30 Aug 96 15:41:33 EDT On Aug. 29 J.Lawrence (faethor@xxxxxxxx) reported on making a home-made serial cable. Is there any reason one could not make an adapter to fit the Poqet bus and have on it both serial and printer ports (maybe even with standard DB9 and DB25 connectors), as they seem to use different pins? Then the Poqet would be more like a standard computer without the need to carry two bulky special cables that make the total package size more like a notebook than a palmtop. If anyone offered such a dual adapter at a reasonable price, I would buy one. Re: Dual Adapter for Poqet? by ddvteach@xxxxxxxx From: ddvteach@xxxxxxxx Subject: Re: Dual Adapter for Poqet? Date: Fri, 30 Aug 1996 16:57:48 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Mel Zwillenberg wrote: > > On Aug. 29 J.Lawrence (faethor@xxxxxxxx) reported on > making a home-made serial cable. > > Is there any reason one could not make an adapter to fit the Poqet > bus and have on it both serial and printer ports (maybe even with > standard DB9 and DB25 connectors), as they seem to use different pins? > > If anyone offered such a dual adapter at a reasonable price, I > would buy one. I second that. However, I understand that serial and parallel ports are two very different aspects of the evolution of computers, and as such they behave differently, making it all but impossible to use one cable for both. I would be glad to be wrong on that one! Domingo Re: Dual Adapter for Poqet? by Psycho Bob From: Psycho Bob Subject: Re: Dual Adapter for Poqet? Date: Fri, 30 Aug 1996 17:40:40 -0500 (CDT) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII > Is there any reason one could not make an adapter to fit the Poqet > bus and have on it both serial and printer ports (maybe even with > standard DB9 and DB25 connectors), as they seem to use different pins? It all depends on your soldering prowess. With single expansion connector, you can pull out a serial connection, a parallel connection, and power to the Poqet easily. I think there's enough signal connections for XT expansion bus, although I didn't look closely at the Poqet expansion bus signal to really confirm that... ------------- clip here with virtual scissors -------------- ******************************************************************* Send any interesting roadkills to honge@xxxxxxxx! Keyboard stuck error. Press F1 to continue. Fax (402) 593-8975 Just say "Your lights are on" to DRLs. ******************************************************************* RE: Digest poqetpc.v001.n011 by CHUCK QUICK, ENG'G, MAITLAND SITE 613-348-4253 From: "CHUCK QUICK, ENG'G, MAITLAND SITE 613-348-4253" Subject: RE: Digest poqetpc.v001.n011 Date: Sat, 31 Aug 96 08:59:40 EDT I would like to contact CADigital but their internet address doesn't seem to work anymore. Can you help.? Re: Dual Adapter for Poqet? by Bryan Mason From: "Bryan Mason" Subject: Re: Dual Adapter for Poqet? Date: Sun, 1 Sep 1996 10:58:54 -8 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT On 30 Aug 96 at 15:41, Mel Zwillenberg <75746.3705@xxxxxxxx> wrote: > On Aug. 29 J.Lawrence (faethor@xxxxxxxx) reported on > making a home-made serial cable. > > Is there any reason one could not make an adapter to fit the Poqet bus > and have on it both serial and printer ports (maybe even with standard > DB9 and DB25 connectors), as they seem to use different pins? > > Then the Poqet would be more like a standard computer without the need > to carry two bulky special cables that make the total package size > more like a notebook than a palmtop. > > If anyone offered such a dual adapter at a reasonable price, I > would buy one. This is certainly doable. Poqet actually made one of these adapters, but never marketed it because it was more expensive than they thought most people would pay for (I think there were also some troubles with passing FCC requirements). Making a serial connector is relatively simple because only a few signals need to be used, and the serial port is actually built into the Poqet PC. However, aking a parallel connector is considerably more difficult because many more signals need to be connected, and you actually have to build the parallel port outside of the Poqet PC. Parallel ports are usually one-chip solutions, but that's still much more complex than just bringing three signals out for a serial port. I think you'd actually have to etch a PCB to connect to the Poqet PC expansion port, instead of using the "flattened-wire" approach. -- Bryan ~~~~ Bryan Mason - Menlo Park, California, USA, Earth e-mail: Poqet PC Home Page: Poqet PC Mailing List: