02/18/98: Null modems by pucc_unknown, | Category: Princeton | 7 comments - (Comments are closed)

Null modems

Date: Wed, 18 Feb 1998 19:32:16 -0500
Reply-To: Don Barber
Sender: COCO – Tandy Color Computer List
From: Don Barber
Subject: Null modems

How would one go about making/getting a a coco3< ->pc null modem cable? is
it possible to wire one up to the serial port, without a rs232 pack? if
not, where could i get/make an rs232 pack, and any software to go with it.

PS, I’m not running any OS, just the BASIC shell i think its called
RSDOS sometimes, not sure…but i do have a “VIDEOTEX” pack…

How much is this OS9 running?


Don Barber
aka Lord Pez
barberd [at] peznet [dot] dyn [dot] ml [dot] org
http://peznet.dyn.ml.org
PGP fingerprint = 90 AB 44 50 CA C5 D0 16 F7 B9 EF 0D 15 08 2F 73

7 comments to Null modems

  • pucc_unknown

    Date: Thu, 19 Feb 1998 10:16:57 -0600
    Reply-To: “Muenzler, Kevin”
    Sender: COCO – Tandy Color Computer List
    From: “Muenzler, Kevin”
    Subject: Re: Null modems

    I made a COCO RS-232 pack several years ago after buying the service
    manual.
    It’s actually a pretty simple piece of equipment. If I can find my old
    service manual
    I’ll xerox a copy and send you the diagram.

    Kevin

    > ———-
    > From: Don BarberSMTP:barberd [at] PEZNET [dot] DYN [dot] ML [dot] ORG
    > Reply To: Don Barber
    > Sent: Wednesday, February 18, 1998 6:32 PM
    > To: Multiple recipients of list COCO
    > Subject: Null modems
    >
    > How would one go about making/getting a a coco3< ->pc null modem cable?
    > is
    > it possible to wire one up to the serial port, without a rs232 pack?
    > if
    > not, where could i get/make an rs232 pack, and any software to go with
    > it.
    >
    >
    > PS, I’m not running any OS, just the BASIC shell i think its called
    > RSDOS sometimes, not sure…but i do have a “VIDEOTEX” pack…
    >
    > How much is this OS9 running?
    >
    >
    > —
    > Don Barber
    > aka Lord Pez
    > barberd [at] peznet [dot] dyn [dot] ml [dot] org
    > http://peznet.dyn.ml.org
    > PGP fingerprint = 90 AB 44 50 CA C5 D0 16 F7 B9 EF 0D 15 08 2F 73
    >

  • pucc_unknown

    Date: Thu, 19 Feb 1998 11:34:08 -0500
    Reply-To: Don Barber
    Sender: COCO – Tandy Color Computer List
    From: Don Barber
    Subject: Re: Null modems
    In-Reply-To: <78C17D749E9ED1118B1700A0C92D117801A320 [at] impala [dot] uthscsa [dot] edu>

    Thanks, I would really appreciate it.


    Don Barber
    aka Lord Pez
    barberd [at] peznet [dot] dyn [dot] ml [dot] org
    http://peznet.dyn.ml.org
    PGP fingerprint = 90 AB 44 50 CA C5 D0 16 F7 B9 EF 0D 15 08 2F 73

    On Thu, 19 Feb 1998, Muenzler, Kevin wrote:

    > I made a COCO RS-232 pack several years ago after buying the service
    > manual.
    > It’s actually a pretty simple piece of equipment. If I can find my old
    > service manual
    > I’ll xerox a copy and send you the diagram.
    >
    > Kevin
    >
    > > ———-
    > > From: Don BarberSMTP:barberd [at] PEZNET [dot] DYN [dot] ML [dot] ORG
    > > Reply To: Don Barber
    > > Sent: Wednesday, February 18, 1998 6:32 PM
    > > To: Multiple recipients of list COCO
    > > Subject: Null modems
    > >
    > > How would one go about making/getting a a coco3< ->pc null modem cable?
    > > is
    > > it possible to wire one up to the serial port, without a rs232 pack?
    > > if
    > > not, where could i get/make an rs232 pack, and any software to go with
    > > it.
    > >
    > >
    > > PS, I’m not running any OS, just the BASIC shell i think its called
    > > RSDOS sometimes, not sure…but i do have a “VIDEOTEX” pack…
    > >
    > > How much is this OS9 running?
    > >
    > >
    > > —
    > > Don Barber
    > > aka Lord Pez
    > > barberd [at] peznet [dot] dyn [dot] ml [dot] org
    > > http://peznet.dyn.ml.org
    > > PGP fingerprint = 90 AB 44 50 CA C5 D0 16 F7 B9 EF 0D 15 08 2F 73
    > >
    >

  • pucc_unknown

    Date: Fri, 20 Feb 1998 03:57:33 -0500
    Reply-To: Marc Fury
    Sender: COCO – Tandy Color Computer List
    From: Marc Fury
    Organization: Delta College
    Subject: Re: Null modems

    Hi Kevin –

    I too would like to have a pack with my CoCo equipment I’ve asked but
    no one has one for sale
    Could you post the RS catalog # of the service manual?
    Tandy service/parts might still have some in stock.

    Thanks,

    : I made a COCO RS-232 pack several years ago after buying the service
    : manual.
    : It’s actually a pretty simple piece of equipment. If I can find my old
    : service manual
    : I’ll xerox a copy and send you the diagram.
    :
    : Kevin
    :
    : > From: Don BarberSMTP:barberd [at] PEZNET [dot] DYN [dot] ML [dot] ORG
    : > Reply To: Don Barber
    : > Sent: Wednesday, February 18, 1998 6:32 PM
    : > To: Multiple recipients of list COCO
    : > Subject: Null modems
    : >
    : > How would one go about making/getting a a coco3< ->pc null modem cable?
    : > is it possible to wire one up to the serial port, without a rs232
    : > pack? if not, where could i get/make an rs232 pack, and any software
    : > to go with it.
    : >
    : > PS, I’m not running any OS, just the BASIC shell i think its called
    : > RSDOS sometimes, not sure…but i do have a “VIDEOTEX” pack…
    : >
    : > How much is this OS9 running?
    : >
    : > Don Barber
    : > aka Lord Pez
    : > barberd [at] peznet [dot] dyn [dot] ml [dot] org
    : > http://peznet.dyn.ml.org
    : > PGP fingerprint = 90 AB 44 50 CA C5 D0 16 F7 B9 EF 0D 15 08 2F 73


    Marc Fury, Cybernaut at Delta College Univ Center, Michigan
    When I surf the net, my wife Brenda rides the board also
    E-Mail address: mfury [at] alpha [dot] delta [dot] edu Web Site: http://www.delta.edu/~mfury
    In CyberSpace, no one can hear you scream….

  • pucc_unknown

    Date: Fri, 20 Feb 1998 10:01:17 -0600
    Reply-To: “Muenzler, Kevin”
    Sender: COCO – Tandy Color Computer List
    From: “Muenzler, Kevin”
    Subject: Re: Null modems

    On Marc Fury, Marc FurySMTP:mfury [at] ALPHA [dot] DELTA [dot] EDU wrote:
    > Hi Kevin –
    >
    > I too would like to have a pack with my CoCo equipment I’ve asked
    but
    > no one has one for sale
    > Could you post the RS catalog # of the service manual?
    > Tandy service/parts might still have some in stock.
    >
    > Thanks,

    All you need is the catelog number of the RS-232 pack.
    Call 1-800-THE-SHACK or visit a local store and order
    the service manual. It shouldn’t be more than $5 or so.

    Kevin

  • pucc_unknown

    Date: Sat, 21 Feb 1998 11:27:46 -0500
    Reply-To: FARNA [at] worldnet [dot] att [dot] net
    Sender: COCO – Tandy Color Computer List
    From: Frank Swygert
    Organization: FARNA Systems
    Subject: Re: Null modems

    Marc Fury wrote:
    >
    > Hi Kevin –
    >
    > I too would like to have a pack with my CoCo equipment I’ve asked but
    > no one has one for sale

    Rick Ulland pulland [at] omnifest [dot] uwm [dot] edu makes and sells a high speed
    RS-232 pak for the CoCo. It uses a 16550 chip which is much faster and
    has a larger buffer than the old ACIA used in the Tandy paks. Last I
    remember these were about $80, but well worth it. Will easily run 56K
    baud.


    Frank Swygert dsrtfox [at] delphi [dot] com
    Publisher:
    “the world of 68′ micros”
    Support for OS-9 and the Tandy Color Computer DECB & OS-9.
    “American Independent Magazine” AIM
    For Nash, Hudson, Rambler, AMC, and other related autos.
    AIM website: http://WWW.JavelinAMX.COM/AIM

  • pucc_unknown

    Date: Mon, 23 Feb 1998 08:35:29 -0600
    Reply-To: “Muenzler, Kevin”
    Sender: COCO – Tandy Color Computer List
    From: “Muenzler, Kevin”
    Subject: Re: Null modems

    On FARNA [at] worldnet [dot] att [dot] net, Frank SwygertSMTP:FARNA [at] WORLDNET [dot] ATT [dot] NET
    wrote:
    > Marc Fury wrote:
    > >
    > > Hi Kevin –
    > >
    > > I too would like to have a pack with my CoCo equipment I’ve asked
    but
    > > no one has one for sale
    >
    > Rick Ulland pulland [at] omnifest [dot] uwm [dot] edu makes and sells a high speed
    > RS-232 pak for the CoCo. It uses a 16550 chip which is much faster and
    > has a larger buffer than the old ACIA used in the Tandy paks. Last I
    > remember these were about $80, but well worth it. Will easily run 56K
    > baud.
    >
    >
    >
    The “UART” in the coco interface would run to 56Kbaud
    but the coco wouldn’t run that fast. I was using it to
    transfer files from my coco to my PC and the effective
    throughput was only about 12kb or so.

    Kevin

  • pucc_unknown

    Date: Wed, 25 Feb 1998 19:50:00 -0500
    Reply-To: FARNA [at] worldnet [dot] att [dot] net
    Sender: COCO – Tandy Color Computer List
    From: Frank Swygert
    Organization: FARNA Systems
    Subject: Re: Null modems

    Muenzler, Kevin wrote:

    > >
    > > Rick Ulland pulland [at] omnifest [dot] uwm [dot] edu makes and sells a high speed
    > > RS-232 pak for the CoCo. It uses a 16550 chip which is much faster and
    > > has a larger buffer than the old ACIA used in the Tandy paks. Last I
    > > remember these were about $80, but well worth it. Will easily run 56K
    > > baud.
    > >
    > >
    > >
    > The “UART” in the coco interface would run to 56Kbaud
    > but the coco wouldn’t run that fast. I was using it to
    > transfer files from my coco to my PC and the effective
    > throughput was only about 12kb or so.
    >
    > Kevin

    Rick has developed the drivers for OS-9 that take advantage of the
    larger buffer of the 16550 and the fewer interupts needed to increase
    the throughput dramatically.


    Frank Swygert dsrtfox [at] delphi [dot] com
    Publisher:
    “the world of 68′ micros”
    Support for OS-9 and the Tandy Color Computer DECB & OS-9.
    “American Independent Magazine” AIM
    For Nash, Hudson, Rambler, AMC, and other related autos.
    AIM website: http://WWW.JavelinAMX.COM/AIM