From vcf@siconic.com Thu Jan 18 12:21:23 2001
From: vcf@siconic.com
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 12:21:23 +0000
Message-ID: <Pine.LNX.4.10.10101181020250.2755-100000@siconic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============6059903931079370422=="

--===============6059903931079370422==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit


I need to know where the serial port connector is on a TRS-80 Expansion
Interface.  I have two of them.  One has its ports labeled, and one of the
ports is labeled "MODEM" but it is simply an edge connector.  Is this the
serial port?  If so, what's the pinout?

Any help would be greatly appreciated.  Thanks!

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

--===============6059903931079370422==--


From cisin@xenosoft.com Thu Jan 18 14:05:52 2001
From: cisin@xenosoft.com
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 14:05:52 +0000
Message-ID: <Pine.GSO.4.21.0101181156540.1596-100000@lanshark.lanminds.com>
In-Reply-To: <Pine.LNX.4.10.10101181020250.2755-100000@siconic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============9207987664662113815=="

--===============9207987664662113815==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

On Thu, 18 Jan 2001, Vintage Computer Festival wrote:
> I need to know where the serial port connector is on a TRS-80 Expansion
> Interface.  I have two of them.  One has its ports labeled, and one of the
> ports is labeled "MODEM" but it is simply an edge connector.  Is this the
> serial port?  If so, what's the pinout?
> Any help would be greatly appreciated.  Thanks!

The connector is, indeed, simply an edge connector.  Sorry, I don't have
the pinout handy; check with Eric.

The serial port was an add-on board for the expansion interface.  It
resides in a compartment in the top of the E.I.

There were chronic problems with poor contacts connecting the serial port
board to the E.I.  Some folks soldered it, some wedged chunks of foam
rubber or other alien materials into the compartment, some fashioned
elegant spring steel brackets in an attempt to improve the connections.


For use with serial printers, there were also parallel to serial
converters, and TRS2332 and GPA which connected to cassette port and
expansion bus, respectively.  (There are some GPA's in the junk that you
got from me.)

--
Grumpy Ol' Fred        cisin(a)xenosoft.com
<A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>

--===============9207987664662113815==--


From foo@siconic.com Thu Jan 18 15:06:57 2001
From: foo@siconic.com
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 15:06:57 +0000
Message-ID: <Pine.LNX.4.10.10101181305400.3095-100000@siconic.com>
In-Reply-To: <Pine.GSO.4.21.0101181156540.1596-100000@lanshark.lanminds.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============1805604010859781044=="

--===============1805604010859781044==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

On Thu, 18 Jan 2001, Fred Cisin (XenoSoft) wrote:

> On Thu, 18 Jan 2001, Vintage Computer Festival wrote:
> > I need to know where the serial port connector is on a TRS-80 Expansion
> > Interface.  I have two of them.  One has its ports labeled, and one of the
> > ports is labeled "MODEM" but it is simply an edge connector.  Is this the
> > serial port?  If so, what's the pinout?
> > Any help would be greatly appreciated.  Thanks!
> 
> The connector is, indeed, simply an edge connector.  Sorry, I don't have
> the pinout handy; check with Eric.
> 
> The serial port was an add-on board for the expansion interface.  It
> resides in a compartment in the top of the E.I.

Dang, I was afraid of that.

Ok then, does anyone have any EI's with the serial daughterboard, or any
serial daughterboards, for sale?  The two EI's don't have the board.  I
need these ASAP!!

Please reply to <sellam(a)vintage.org> if you've got any.

Thanks, Fred!

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

--===============1805604010859781044==--


From foo@siconic.com Thu Jan 18 15:09:25 2001
From: foo@siconic.com
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 15:09:25 +0000
Message-ID: <Pine.LNX.4.10.10101181308420.3095-100000@siconic.com>
In-Reply-To: <Pine.LNX.4.10.10101181355370.1192-100000@war.deltasoft.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============7080485651490783422=="

--===============7080485651490783422==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

On Thu, 18 Jan 2001, Gene Buckle wrote:

> Sellam, this might be an obvious question, but does the EI have the serial
> port option board installed?  There is a plastic cover that's held down by
> two screws (I _think_) on the top of the EI that covers the little serial
> board.  If it _is_ installed and it hasn't been modified, it would be a
> good idea to pull it and clean the connectors on both the serial board and
> the EI since they're just a pressure fit with no real connector.

Nope, niether of mine have the serial port option board.  So I need two
ASAP!

If you have one to sell, please reply to <sellam(a)vintage.org>.  Thanks!

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

--===============7080485651490783422==--


From ard@p850ug1.demon.co.uk Thu Jan 18 15:25:39 2001
From: ard@p850ug1.demon.co.uk
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 15:25:39 +0000
Message-ID: <m14JMYw-000IyHC@p850ug1>
In-Reply-To: <Pine.LNX.4.10.10101181020250.2755-100000@siconic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============8214747940958660642=="

--===============8214747940958660642==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

A non-text attachment was scrubbed...
Name: not available
Type: text
Size: 2114 bytes
Desc: not available
Url : http://www.classiccmp.org/pipermail/cctalk/attachments/20010118/52b80a7=
a/attachment.ksh

--===============8214747940958660642==--


From geneb@deltasoft.com Thu Jan 18 15:58:16 2001
From: geneb@deltasoft.com
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 15:58:16 +0000
Message-ID: <Pine.LNX.4.10.10101181355370.1192-100000@war.deltasoft.com>
In-Reply-To: <Pine.LNX.4.10.10101181020250.2755-100000@siconic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============0756382099672152611=="

--===============0756382099672152611==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Sellam, this might be an obvious question, but does the EI have the serial
port option board installed?  There is a plastic cover that's held down by
two screws (I _think_) on the top of the EI that covers the little serial
board.  If it _is_ installed and it hasn't been modified, it would be a
good idea to pull it and clean the connectors on both the serial board and
the EI since they're just a pressure fit with no real connector.

The edge connector is the serial port.  There is also an edge connector
that brings out the parallel port lines.  You can figure out which is
which by tracing the lines on the board.  I'm pretty sure the serial
connector comes out the left side as you face the EI.

g.


On Thu, 18 Jan 2001, Vintage Computer Festival wrote:

>=20
> I need to know where the serial port connector is on a TRS-80 Expansion
> Interface.  I have two of them.  One has its ports labeled, and one of the
> ports is labeled "MODEM" but it is simply an edge connector.  Is this the
> serial port?  If so, what's the pinout?
>=20
> Any help would be greatly appreciated.  Thanks!
>=20
> Sellam Ismail                                        Vintage Computer Festi=
val
> ---------------------------------------------------------------------------=
---
> International Man of Intrigue and Danger                http://www.vintage.=
org
>=20
>=20

--===============0756382099672152611==--


From louiss@gate.net Thu Jan 18 16:59:37 2001
From: louiss@gate.net
To: test-drb@ccmp.vtda.org
Subject: Questions about TRS-80 Expansion Interface
Date: Thu, 18 Jan 2001 16:59:37 +0000
Message-ID: <200101182259.RAA197678@flathead.gate.net>
In-Reply-To: <Pine.LNX.4.10.10101181020250.2755-100000@siconic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============5848975368070382462=="

--===============5848975368070382462==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

Well, there is no RS-232C port with the basic interface.  This requires
a card to be installed in the bay on top of the interface.  If you have
this card installed, the signals appear at the "Expansion Board Card
Edge"  which is  in the middle of the front of the interface.

The card edge is 40 pin.  The following are the main signals an pins:
18-TD; 20-SGND; 22-RD; 30-CD; 32-CTS; 34-DTR; 36-RTS; 38-RI; 40-DSR.

Louis

On Thu, 18 Jan 2001 10:21:23 -0800 (PST), Vintage Computer Festival
wrote:

*
*I need to know where the serial port connector is on a TRS-80
Expansion
*Interface.  I have two of them.  One has its ports labeled, and one of
the
*ports is labeled "MODEM" but it is simply an edge connector.  Is this
the
*serial port?  If so, what's the pinout?
*
*Any help would be greatly appreciated.  Thanks!
*
*Sellam Ismail                                        Vintage Computer
Festival
*-----------------------------------------------------------------------
-------
*International Man of Intrigue and Danger               
http://www.vintage.org
*
*

--===============5848975368070382462==--