Packet Modems & Cards
AGW Packet Engine Now supports not only external tncs but also other kind of modem tncs.
They are the follow.
1.Baycom (and compatibles) 1200/2400 serial modems.
2.OE5DXL 9600 G3RUH compatible modem.
3.DRSI cards.
4.Baycom USCC cards.
5.Sound Cards (Any Kind).
6. YAM .
7.OptoScc card (4 Ports).
8.PetScc Card (2 Ports).
9.Baycom Picpar 9600 & BP-96.
10.G4XYW smart 9600b modem.
All of them are virtul device drivers (*.vxd) and run ONLY under WIN95/98.
All of the above drivers are dynamic. This means that they are loaded only while
AGW Packet Engine is runing and only if we need them.When AGW Packet Engine exits,
the driver is also unloaded.
The configuration of the AGW Packet Engine for those drivers is done very easy.
Just select the TNC type and you are ready.Don't forget to select also the
appropriate serial port and baudrate.
AGWDRSI.vxd
The driver is working well and support up to 4 DRSI cards sharing the same IRQ.
It supports also the 1200/9600 card with no problem.
There are no problem report for that driver.
AGWUSCC.vxd
There is a newer version that fixes all (hope!) the problems.
AGWDXL.vxd
The driver works very well. I could say better than the DOS version. In fact i am using it as my main tnc for 9600.The modem schematics is in the OE5DXL.ZIP. The New version has fixed the persistance problem. Now I will include the ability to adjust the Frequency to match 4800Hz. There is also a version for WINNT, if you wish to test it just ask me.
AGWPSA.vxd
The driver works OK.The DSP code is by Tom Sailer HB9JNX.I wrote just the Device driver to interface Sound Card with Packet Engine. Details of how and what you can find in the drivers.zip file.
The driver works very well.I would like to Thank Nico Palermo IV3NWV (YAM developer) who sent me the modem.
These are G3RUH 9600 compatible modems that connect to the printer port. The driver works ok but I haven't included,yet,the software DCD. The software DCD is not required for those modems since the Harware DCD works great. It is only needed for earlier versions called Par96.
Baycom Serial Modem
That driver is suitable for Baycom (and compatible) serial modems with the
TCM-3105 or AM7910.The driver supports 1200bauds and 2400bauds. So you need
to select also the appropriate baudrate from AGW Packet Engine properties dialog.
I am using that modem/driver for my main 1200 packet operations. I am trying to
improve it. So check for newer versions in the NEWS page.
Follow a small problem solution list.
1.The driver default is with close squelch. If you need to have the squelch open then
check from properties second dialog the Soft DCD on and select an appropriate
value.But prefered method is with Squelch off.
2.Use the shortest possible cable to connect your modem with the computer.
Preffered method direct connection on the PC serial port(No cable just back to back).
3.Check the 2.7 volt calibration with the driver running.
4.The modem doesnt receives well (miss packets)
a).From control panel system select the serial port where your Baycom is connected
and from the advance properties dialog for that port disable FIFO.Reports show
that receiving is better
b)Unload all other programs. First disable any power saving and Screen Savers and antivirus
software.
c)Certain Display device drivers cause problems. Do the follow to see if your
video card is ok for Baycom.From Control Panel system performance set the accelarator
for the video card to 0 (Zero). Restart and check. If this is the problem then
Find a new driver for your card and increase the accelerator speed step by step and check.
d)If still problem check your modem on the same computer using a DOS program
like TFPCX if this also has problem then buy a small ISA card with two extra
(COM3/COM4) ports and connect the Baycom there.
YAM
Now the YAM is capable of working at 1200 and 9600 Check YAM Site.
PicPar96 & BP96
© 1998 SV2AGW (George Rossopoulos). All rights reserved.