Need Serial Comm port help!!!

Thu Apr 5 19:49:22 GMT 2001

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I don't know much about the dfi system but if you can talk to the MSD
system, just not DFI then I suspect that it could be port voltage related.
Many of the newer machines DO NOT comply to the standard -12 to +12 voltage
swing. Sometimes this helps, sometimes it hurts, Poor standard adherance
helps the TECII, don't know about the Accel. Just something to compare.

Damon Kelley
87 Shadow ES, 13psi, Cold-Air
89 CSX #208, 15.2 at 93
96 CBR600F3, Turbo In Process

-----Original Message-----
From: Flanagan, Steve [mailto:Steve.Flanagan at VerizonWireless.com]
Sent: Thursday, April 05, 2001 2:05 PM
To: 'diy_efi at diy-efi.org'; diy_efi at lists.diy-efi.org;
gmecm at lists.diy-efi.org
Subject: Need Serial Comm port help!!!

I recently upgraded my laptop to a Compaq presario 1200.  My intention was
to
get rid of my 50Mhz old machine and have something that runs windows.  I use
this laptop at the racetrack to run my data recording software (windows),
MSD
software (windows) and my Accel DFI software (DOS).

The problem I have (and Accel will not support) is that the newer laptop
will not
connect to the DFI.  I have changed the baud rate to match the rate of the
older
50Mhz machine,  same stop bits, same parity.  Not sure which flow control so
I tried
all three (xon/xoff, hardware, none). I even lowered the size of the
buffers.  After
many configurations and attempts my result was still failure.  I even tried
slowing 
down the newer PC to match the performance of the 50MHz machine.  I have
started in
Dos mode also.

My dilemma is the old PC is on its last legs, and I need to make the newer
PC communicate
with the DFI.

Does anyone have any ideas, above and beyond what I have already done to get
my new
PC to link to the DFI?  

Does anyone know what is different between older serial ports (on an IBM
50Mhz machine)
and the newer (500Mhz + machines)?????

Can a device be built that will let the newer serial port work the same as
the older
serial port????

Thanks for you help.

PS: please reply both to the page and directly to me, I am not on the efi or
gmecm lists
any more, just the diy list.  

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<TITLE>RE: Need Serial Comm port help!!!</TITLE>
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I don't know much about the dfi system but if you can =
talk to the MSD system, just not DFI then I suspect that it could be =
port voltage related. Many of the newer machines DO NOT comply to the =
standard -12 to +12 voltage swing. Sometimes this helps, sometimes it =
hurts, Poor standard adherance helps the TECII, don't know about the =
Accel. Just something to compare.

<P><FONT SIZE=3D2>Damon Kelley</FONT>
<BR><FONT SIZE=3D2>87 Shadow ES, 13psi, Cold-Air</FONT>
<BR><FONT SIZE=3D2>89 CSX #208, 15.2 at 93</FONT>
<BR><FONT SIZE=3D2>96 CBR600F3, Turbo In Process</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Flanagan, Steve [<A =
HREF=3D"mailto:Steve.Flanagan at VerizonWireless.com">mailto:Steve.Flanagan=
@VerizonWireless.com</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Thursday, April 05, 2001 2:05 PM</FONT>
<BR><FONT SIZE=3D2>To: 'diy_efi at diy-efi.org'; =
diy_efi at lists.diy-efi.org;</FONT>
<BR><FONT SIZE=3D2>gmecm at lists.diy-efi.org</FONT>
<BR><FONT SIZE=3D2>Subject: Need Serial Comm port help!!!</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>I recently upgraded my laptop to a Compaq presario =
1200.&nbsp; My intention was</FONT>
<BR><FONT SIZE=3D2>to</FONT>
<BR><FONT SIZE=3D2>get rid of my 50Mhz old machine and have something =
that runs windows.&nbsp; I use</FONT>
<BR><FONT SIZE=3D2>this laptop at the racetrack to run my data =
recording software (windows),</FONT>
<BR><FONT SIZE=3D2>MSD</FONT>
<BR><FONT SIZE=3D2>software (windows) and my Accel DFI software =
(DOS).</FONT>
</P>

The problem I have (and Accel will not support) is =
that the newer laptop
 will not
 connect to the DFI.&nbsp; I have changed the baud =
rate to match the rate of the
 older
 50Mhz machine,&nbsp; same stop bits, same =
parity.&nbsp; Not sure which flow control so
 I tried
 all three (xon/xoff, hardware, none). I even lowered =
the size of the
 buffers.&nbsp; After
 many configurations and attempts my result was still =
failure.&nbsp; I even tried
 slowing 
 down the newer PC to match the performance of the =
50MHz machine.&nbsp; I have
 started in
 Dos mode also.

<P><FONT SIZE=3D2>My dilemma is the old PC is on its last legs, and I =
need to make the newer</FONT>
<BR><FONT SIZE=3D2>PC communicate</FONT>
<BR><FONT SIZE=3D2>with the DFI.</FONT>
</P>

<P><FONT SIZE=3D2>Does anyone have any ideas, above and beyond what I =
have already done to get</FONT>
<BR><FONT SIZE=3D2>my new</FONT>
<BR><FONT SIZE=3D2>PC to link to the DFI?&nbsp; </FONT>
</P>

<P><FONT SIZE=3D2>Does anyone know what is different between older =
serial ports (on an IBM</FONT>
<BR><FONT SIZE=3D2>50Mhz machine)</FONT>
<BR><FONT SIZE=3D2>and the newer (500Mhz + machines)?????</FONT>
</P>

<P><FONT SIZE=3D2>Can a device be built that will let the newer serial =
port work the same as</FONT>
<BR><FONT SIZE=3D2>the older</FONT>
<BR><FONT SIZE=3D2>serial port????</FONT>
</P>

<P><FONT SIZE=3D2>Thanks for you help.</FONT>
</P>

<P><FONT SIZE=3D2>PS: please reply both to the page and directly to me, =
I am not on the efi or</FONT>
<BR><FONT SIZE=3D2>gmecm lists</FONT>
<BR><FONT SIZE=3D2>any more, just the diy list.&nbsp; </FONT>
</P>
<BR>

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SIZE=3D2>---------------------------------------------------------------=
-------------</FONT>
<BR><FONT SIZE=3D2>To unsubscribe from diy_efi, send &quot;unsubscribe =
diy_efi&quot; (without the quotes)</FONT>
<BR><FONT SIZE=3D2>in the body of a message (not the subject) to =
majordomo at lists.diy-efi.org</FONT>
</P>

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