Need Serial Comm port help!!!

[Shirley, Mark R]

I've used DFI's old and current cables on their boxes with current
PC hardware up to a 450 P3.  No problem.  It's got to be something
in your hardware config.

> -----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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