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dev/misc/ModemLink1_2.lha |
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ModemLink Device
Mike Veroukis - 1997
Introduction:
~~~~~~~~~~~~
The ModemLink device was written in an attempt to make modem linkable
games easier to write on the Amiga. We've seen hundreds of games on the
PC with modem play capabilities, but most Amiga games don't provide this
option. This frustrates many Amiga game players, as everyone knows it's
much more fun to kill your friends then stupid computer-AI people!
It's no secret that most Amiga programmers are not part of some rich
company. Therefore, it's easy to understand why many developers don't add
modem play to their games.
First of all, you may be adding a few months to development time just for
the modem link part of the game. For many hobby programmers, they'd rather
just finish the game quickly, and move onto new and exciting things. The
ModemLink device gives the developer all the code required for a basic
modem playable game, therefore saving on development time.
Another problem is that you'd need two Amigas, with a modem on each, and
preferably two phone lines (although you could always use a null modem as
well). Not everyone can have this kind of set up. The ModemLink device
makes it a little easier to develope the modem linkable game, since there's
less to worry about. You'll still need to test, but it's the sort of thing
a friend with an Amiga and a modem can help out with. Since the ModemLink
device has been tested, and is known to work, a game developer only needs to
worry about how to interface with the ModemLink device.
Well, this is all very cool and all, but how does it work??? Although I
don't want to get into the finer details of the device, this is a good
place to give a rough description of the thing.
The ModemLink device provides two important functions; Modem Connectivity
and a Reliable Serial Protocol. What does this mean???
Modem Connectivity:
~~~~~~~~~~~~~~~~~~
The ModemLink device provides standard routines to dial/answer calls.
These routines can be used to easily set up a modem connection. They have
been designed to be very flexible and provide significant control to the
programmer.
Reliable Serial Protocol:
~~~~~~~~~~~~~~~~~~~~~~~~
Once a modem connection is made, data must be sent and received across the
phone line. One needs to be sure that the data received is correct, and
the data sent has been received. To do this, some kind of protocol must
be used, which the ModemLink device provides. Although designed to support
more protocols in the future, it currently only supports a single protocol
based on what is called the Stop And Wait protocol.
Anyway, as you might have guessed, the main point to this entire project
is to make it easier for Amiga programmers to make modem linkable games. I
offer this package (with source included) free for everyone to use.
Release History:
~~~~~~~~~~~~~~~
R1.2 V36.2 (Oct 26 1997):
- ModemLink.device would not create the ModemLink Semaphore which is needed
to make sure that only one instance of modemlink.device is running for a
given Unit. This has been fixed.
R1.1 V36.1 (Oct 25 1997):
- SendModemCMD now checks to see if modem is OFF only if issued command is
never echoed back from modem. This is to be compatible with newer
modems which auto power-up when first command is issued.
- Cleaned up some documentation.
- Changed the scoptions file so that it now sets PARAMS=BOTH. It will now
use both registers AND stack for parameters.
- Added StormC pragma file in include/StormC_pragmas.
R1.0 V36.0 (May 10 1997):
- Initial release
R0.0 V00.0 (July 4, 1996):
- Modemlink Project begins
- Mike
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Contents of dev/misc/ModemLink1_2.lha
PERMSSN UID GID PACKED SIZE RATIO CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic] 9820 38552 25.5% -lh5- 3ab0 Oct 20 1997 ModemLink/AutoDocs/ModemLink.doc
[generic] 342 858 39.9% -lh5- c0ce Oct 25 1997 ModemLink/AutoDocs/ModemLink.doc.info
[generic] 6509 10560 61.6% -lh5- 9789 Oct 26 1997 ModemLink/Devs/modemlink_000.device
[generic] 6515 10540 61.8% -lh5- bdae Oct 26 1997 ModemLink/Devs/modemlink_020.device
[generic] 14723 41684 35.3% -lh5- 13d7 Oct 26 1997 ModemLink/Docs/ModemLink.guide
[generic] 323 840 38.5% -lh5- 5c8f Mar 19 1997 ModemLink/Docs/ModemLink.guide.info
[generic] 501 841 59.6% -lh5- 4575 Mar 11 1997 ModemLink/Examples/Build.info
[generic] 1711 2632 65.0% -lh5- a81a Jul 4 1996 ModemLink/Examples/Debug
[generic] 382 831 46.0% -lh5- 4097 Mar 11 1997 ModemLink/Examples/Debug.info
[generic] 840 2771 30.3% -lh5- af71 Apr 6 1997 ModemLink/Examples/DeviceStuff.c
[generic] 252 600 42.0% -lh5- b1d7 Mar 11 1997 ModemLink/Examples/DeviceStuff.h
[generic] 541 838 64.6% -lh5- 26f5 Mar 11 1997 ModemLink/Examples/Edit.info
[generic] 451 842 53.6% -lh5- d3d6 Mar 11 1997 ModemLink/Examples/Find.info
[generic] 88 122 72.1% -lh5- 1e33 Oct 26 1997 ModemLink/Examples/SCoptions
[generic] 458 2954 15.5% -lh5- f785 Mar 11 1997 ModemLink/Examples/SCoptions.info
[generic] 435 990 43.9% -lh5- 047a Mar 25 1997 ModemLink/Examples/smakefile
[generic] 11053 17400 63.5% -lh5- 2759 Oct 26 1997 ModemLink/Examples/TestML
[generic] 1402 4673 30.0% -lh5- f6a1 Oct 25 1997 ModemLink/Examples/TestML.c
[generic] 392 835 46.9% -lh5- 28ef Mar 11 1997 ModemLink/Examples/TestML.info
[generic] 6625 10584 62.6% -lh5- 7069 Oct 26 1997 ModemLink/Examples/TestMLDev
[generic] 1533 5251 29.2% -lh5- b866 Oct 25 1997 ModemLink/Examples/TestMLDev.c
[generic] 395 835 47.3% -lh5- 2c75 Mar 11 1997 ModemLink/Examples/TestMLDev.info
[generic] 283 632 44.8% -lh5- acf6 Mar 16 1997 ModemLink/include/clib.info
[generic] 881 2712 32.5% -lh5- ea0c Apr 6 1997 ModemLink/include/clib/ModemLink_protos.h
[generic] 329 840 39.2% -lh5- f88a Oct 25 1997 ModemLink/include/clib/ModemLink_protos.h.info
[generic] 277 632 43.8% -lh5- bb47 Mar 16 1997 ModemLink/include/ModemLink.info
[generic] 1534 3765 40.7% -lh5- 7f64 Oct 26 1997 ModemLink/include/ModemLink/ModemLink.h
[generic] 326 840 38.8% -lh5- 9858 Oct 25 1997 ModemLink/include/ModemLink/ModemLink.h.info
[generic] 276 632 43.7% -lh5- 030a Mar 16 1997 ModemLink/include/pragmas.info
[generic] 217 677 32.1% -lh5- 90ff Feb 16 1997 ModemLink/include/pragmas/ModemLinkDev_pragmas.h
[generic] 326 840 38.8% -lh5- 86fa Oct 25 1997 ModemLink/include/pragmas/ModemLinkDev_pragmas.h.info
[generic] 281 632 44.5% -lh5- d541 Mar 16 1997 ModemLink/include/proto.info
[generic] 134 200 67.0% -lh5- 3b7b Mar 16 1997 ModemLink/include/proto/ModemLink.h
[generic] 327 840 38.9% -lh5- 3d44 Oct 25 1997 ModemLink/include/proto/ModemLink.h.info
[generic] 282 632 44.6% -lh5- 9e5d Oct 25 1997 ModemLink/include/StormC_pragmas.info
[generic] 391 1051 37.2% -lh5- 2860 Oct 26 1997 ModemLink/include/StormC_pragmas/ModemLinkDev_pragmas.h
[generic] 326 840 38.8% -lh5- 473b Oct 25 1997 ModemLink/include/StormC_pragmas/ModemLinkDev_pragmas.h.info
[generic] 6138 10688 57.4% -lh5- 2b82 Oct 26 1997 ModemLink/lib/ModemLink_000.lib
[generic] 6137 10668 57.5% -lh5- 75c5 Oct 26 1997 ModemLink/lib/ModemLink_020.lib
[generic] 252 456 55.3% -lh5- 6951 Oct 26 1997 ModemLink/lib/ModemLinkDev.lib
[generic] 500 841 59.5% -lh5- 6fda Apr 6 1997 ModemLink/Source/Build.info
[generic] 2013 3832 52.5% -lh5- 0462 Oct 24 1997 ModemLink/Source/CRC.c
[generic] 94 98 95.9% -lh5- bebf Dec 28 1996 ModemLink/Source/CRC.h
[generic] 1711 2632 65.0% -lh5- a81a Jul 4 1996 ModemLink/Source/Debug
[generic] 387 831 46.6% -lh5- 1f03 Apr 6 1997 ModemLink/Source/Debug.info
[generic] 0 0 ****** -lh0- 0000 Oct 26 1997 ModemLink/Source/dev/
[generic] 968 3032 31.9% -lh5- 43ee Oct 24 1997 ModemLink/Source/DeviceStuff.c
[generic] 252 600 42.0% -lh5- b1d7 Mar 13 1997 ModemLink/Source/DeviceStuff.h
[generic] 542 838 64.7% -lh5- 45f8 Apr 6 1997 ModemLink/Source/Edit.info
[generic] 449 842 53.3% -lh5- 42e2 Apr 6 1997 ModemLink/Source/Find.info
[generic] 0 0 ****** -lh0- 0000 Oct 26 1997 ModemLink/Source/lib/
[generic] 2178 7519 29.0% -lh5- 961c Oct 24 1997 ModemLink/Source/Link.c
[generic] 1170 2987 39.2% -lh5- a5a8 Oct 22 1997 ModemLink/Source/Link.h
[generic] 429 827 51.9% -lh5- 56a1 Oct 24 1997 ModemLink/Source/LinkDevTags.c
[generic] 165 224 73.7% -lh5- 6455 Mar 11 1997 ModemLink/Source/LinkDevTags.h
[generic] 385 732 52.6% -lh5- 4f42 Oct 24 1997 ModemLink/Source/LinkTags.c
[generic] 156 213 73.2% -lh5- e1b2 Mar 13 1997 ModemLink/Source/LinkTags.h
[generic] 2313 9431 24.5% -lh5- bc03 Oct 24 1997 ModemLink/Source/Modem.c
[generic] 668 1802 37.1% -lh5- f7e1 Mar 25 1997 ModemLink/Source/Modem.h
[generic] 466 1118 41.7% -lh5- 716d Oct 24 1997 ModemLink/Source/ModemDevTags.c
[generic] 206 386 53.4% -lh5- 4745 Mar 11 1997 ModemLink/Source/ModemDevTags.h
[generic] 395 835 47.3% -lh5- 97d1 Oct 26 1997 ModemLink/Source/modemlink.device.info
[generic] 495 1043 47.5% -lh5- 95cf Oct 24 1997 ModemLink/Source/ModemLinkAPI.c
[generic] 126 177 71.2% -lh5- 2357 Mar 9 1997 ModemLink/Source/ModemLinkAPI.h
[generic] 1052 2990 35.2% -lh5- 7d2f Oct 26 1997 ModemLink/Source/ModemLinkDev.c
[generic] 248 508 48.8% -lh5- 83bf Feb 16 1997 ModemLink/Source/ModemLinkDev.fd
[generic] 217 677 32.1% -lh5- 90ff Mar 11 1997 ModemLink/Source/ModemLinkDev_pragmas.h
[generic] 790 2869 27.5% -lh5- 6459 Oct 24 1997 ModemLink/Source/ModemLinkDevAPI.c
[generic] 262 521 50.3% -lh5- 38e7 Mar 25 1997 ModemLink/Source/ModemLinkDevAPI.h
[generic] 3308 14317 23.1% -lh5- d169 Oct 24 1997 ModemLink/Source/ModemLinkTask.c
[generic] 354 681 52.0% -lh5- 797f Jan 26 1997 ModemLink/Source/ModemLinkTask.h
[generic] 433 1042 41.6% -lh5- cbf5 Oct 24 1997 ModemLink/Source/ModemTags.c
[generic] 202 378 53.4% -lh5- 5188 Mar 13 1997 ModemLink/Source/ModemTags.h
[generic] 115 186 61.8% -lh5- 865e Oct 26 1997 ModemLink/Source/SCoptions
[generic] 455 2954 15.4% -lh5- 5fce Apr 6 1997 ModemLink/Source/SCoptions.info
[generic] 1256 4768 26.3% -lh5- 987f Oct 26 1997 ModemLink/Source/smakefile
[generic] 266 628 42.4% -lh5- b630 Mar 25 1997 ModemLink.info
[generic] 279 632 44.1% -lh5- 33e4 Mar 25 1997 modemlink/AutoDocs.info
[generic] 284 632 44.9% -lh5- c873 Mar 25 1997 modemlink/Devs.info
[generic] 283 632 44.8% -lh5- 6316 Mar 25 1997 modemlink/Docs.info
[generic] 283 632 44.8% -lh5- cf4c Mar 25 1997 modemlink/Examples.info
[generic] 276 632 43.7% -lh5- 7aa2 Oct 25 1997 modemlink/include.info
[generic] 280 632 44.3% -lh5- 0dd8 Mar 25 1997 modemlink/lib.info
[generic] 277 632 43.8% -lh5- 77f4 Oct 25 1997 modemlink/Source.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
Total 84 files 110996 271393 40.9% Oct 27 1997
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