Dec 302017
Update to TE/2 async DLL file. This version of the DLL reduces Zmodem timeouts and includes revamped Ymodem routines. Requires TE/2 1.20.
File CPK2_101.ZIP from The Programmer’s Corner in
Category OS/2 Files
Update to TE/2 async DLL file. This version of the DLL reduces Zmodem timeouts and includes revamped Ymodem routines. Requires TE/2 1.20.
File Name File Size Zip Size Zip Type
COMMPAK2.DLL 107798 57732 deflated
CPK2_101.DOC 11250 4186 deflated

Download File CPK2_101.ZIP Here

Contents of the CPK2_101.DOC file

Oberon CommPak/2 Dynamic Link Library
Asynchronous Communications Routine Library for use with TE/2
Version 1.01

Oberon Software
518 Blue Earth Street
Mankato, MN 56001-2142

Voice Phone: 507/388-7001
BBS: 507/388-1154
MCI Mail: oberon/413-5847
CIS: 72510,3500

July 21, 1992


Copyright 1991-92, Oberon Software, Mankato, MN - All Rights Reserved


This version of the file COMMPAK2.DLL is a replacement for the file
of the same name which is distributed with the Oberon Terminal
Emulator/2. The dynalink library contains the routines which TE/2
uses for its low and medium level access to the communication device,
terminal emulation, and file transfer protocols.

If you are currently using TE/2 version 1.20 you should replace
your existing COMMPAK2.DLL with this file.

This version of COMMPAK2.DLL is NOT guaranteed to work with any
version of TE/2 prior to version 1.20. If you are using a version
of TE/2 prior to 1.20, you should obtain the latest version.
Please contact Oberon Software if you are unable to locate a copy.

Oberon Software will no longer officially support versions of TE/2
prior to Version 1.10.C nor versions of COMMPAK2.DLL prior to Version


The CommPak/2 Dynamic Link Library is a shareware product of
Oberon Software. You may freely use it in conjunction with TE/2 with
no further registration commitment than is already implied by your
use of TE/2. If you are already a registered user of TE/2, use of
this file is completely free. If you have not registered TE/2, you
are urged to do so, but this file is considered to be part of the
shareware package and does not require its own separate registration.

Enhancements to this library will occur from time to time
independent of version releases of other Oberon Software products.
The most current version of this library, so long as it is compatible
with the current released version of TE/2, will always be available
on the Oberon User Support BBS (507/388-1154, HST). We will also
make sure that new releases of this library appear on GEnie,
Compuserve, BIX, and major BBSes around the world as they become



If you have already installed a compatible version of TE/2 (as
defined above), simply locate the file COMMPAK2.DLL on your hard disk
and replace it with this copy of that file. Please note that if TE/2
is currently running you must exit TE/2 before copying the new file
over the existing one. The next time you start TE/2 the new dynamic
link library will be used.

If you have not yet installed TE/2, please follow the installation
instructions contained in the TE/2 documentation and then replace
COMMPAK2.DLL as outlined in the previous paragraph.



File Transfer Protocols

All file transfer protocols have been reworked somewhat. YModem
has been recompiled to remove some overzealous compiler
optimizations which were causing troubles in many cases. A
"priority contention" between several threads (used in all the
protocols) has been resolved which should result in more robustness
for all the protocols. ZModem has been heavily worked on to deal
with several problems including the occurrence of large numbers of
retried packets, CRC errors, and failure to resynchronize after
retried packets. Further, the ZModem in Commpak/2 1.00 would fail
to work with some other implementations of ZModem such as the DOS
program DSZ and the Unix sz if the sending program attempted to
escape control characters. This problem has been addressed. This
implementation of ZModem will NOT work with the complementary rz/sz
which Omen Technologies distributes for VAX VMS systems because
those programs contain copyrighted ZModem-90(tm) extensions which
insure that these programs will only operate in conjunction with
other Omen products. Omen Technologies sells a VAX VMS version of
rz/sz which will work with other vendors ZModems. If you need
this, you must contact Omen.

General notes on the COMMPAK2FLAGS environment variable

The two items below both instruct you to set or unset some flags in
this environment variable. It would seem to be a good idea to
restate the format for this here before proceeding. The variable
must be set in the OS/2 environment before TE/2 is executed;
Commpak/2 reads the value only at start-up. Thus, you should set
the value in your config.sys file or, if you start TE/2 from a
batch file, you could set it there. The general format of the
variable is:

set COMMPAK2FLAGS=:;:; ...

where "flag1" and "flag2" are one-letter settings, "val1" and
"val2" are the values to which the flags are set and their format
depends on the flag in question. You may have as many or as few
flags in this list as you need, each flag/value pair is separated
from the next by a semicolon. The list itself should be
terminated with a semicolon.

Thus, to set the VT100 default attribute flag (discussed below) to
"23" and the Extended Hardware Buffering flag (also discussed below)
to "N", you would use the following statement in your config.sys or
start-up batch file:


Currently, the available flags are:

Flag Value
---- -----
'K' Set to 0, 1, or 2 will determine how (or whether) the file
transfer protocols sample the keyboard for the ESCape key.
0 implies no keyboard check, 1 will cause it to use a
no-wait keyboard read, and 2 will use KbdPeek to check for
a keystroke. Default value is 2.
'V' Set to a number from -1 to 255 to set the VT100 default
screen attribute. -1 (the default) will enable the default
VT100 screen attribute of white on black (7). See
discussion below.
'X' Set to 'Y' or 'N'. Default is 'N'. If set to 'Y', this
will cause the file transfer protocols to attempt to enable
the device driver's Auto-Buffering mode for the 16550 UART.
Otherwise, the setting will be left as is. See the
discussion below.


People have suggested that it would be more esthetically pleasing
if there were a way to override the VT100 default color attribute
of White on Black to a setting of the user's choice. As an interim
measure, you are now able to set this via the COMMPAK2FLAGS
environment variable. To do this set the flag "V" to the decimal
value of the attribute you would like the VT100 to use as the
default (note, to make this work the best, this should be the same
value you use for the TermAttr in TE2.INI).

For example, if you like white text on a blue background you should
set TermAttr to 23 in TE2.INI and your COMMPAK2FLAGS setting should
contain "V:23;" (in TE2.INI you have the option of using the hex
notation: 0x17). There is a table in the TE/2 documentation which
should help you in deciding what the numeric value of the color
attribute you wish to use is. In the next release of TE/2, this
will be directly settable from TE/2; the COMMPAK2FLAGS flag is only
an interim workaround.

Extended Hardware Buffering

Changed default value on "X" flag for COMMPAK2FLAGS:
The "X" flag (which is set to "Y" or "N" to enable/disable the
probe for a 16550 UART when protocols start up) used to default to
"Y", it now defaults to "N" because the OS/2 com driver mishandles
this on some machines (notably some PS/2 model 70's with a 16450
UART in which case it causes OS/2 to halt!). Thus, if you have
been instructed to "set COMMPAK2FLAGS=X:N;", you can now remove
this from your config.sys or session start-up if you would like.

General note regarding Extended Hardware Buffering
It is probably best to set this via the OS/2 MODE command as is
appropriate for your hardware and to set TE/2 and Commpak/2 to not
alter the setting. With the change in COMMPAK2FLAGS mentioned
above, no further action is required for Commpak/2. For TE/2, you
should make sure that the keyword "ExtendedFIFO" is either deleted
or "commented out" of your TE2.INI file and/or modem include file.


We intend to document the API (Application Program Interface) for
CommPak/2 and make it available to interested parties. If you are
interested in such a toolkit, fell free to contact Oberon Software
via the Oberon BBS for information.


The code contained in the accompanying file COMMPAK2.DLL ("the
software") and this document are:

Copyright (c) 1990-1992
by Oberon Software
518 Blue Earth Street
Mankato, MN 56001-2142 USA

Portions of the ZModem code are:

Copyright (c) 1991-1992
by Chris Laforet and Chris Laforet Software
Graham, NC


Use of this software for any purpose whatsoever constitutes your
unqualified acceptance of the following statements.

The author makes no warranty or representation that the software will
be error free. The author disclaims any warranties, either express or
implied, including but not limited to any implied warranty of
merchantability or fitness for any particular purpose.

The user agrees to take full responsibility for the selection of and
any use whatsoever made of the software.


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