VT220

[Paul Koning]

>>>>> "SP" == SP  <spedraja at ono.com> writes:

 SP> Hello. I am playing with one VT220 plugged to the serial port of
 SP> one Pentium 4 laptop. I have Cygwin installed, with Init and
 SP> getty started, and the serial port defined with VT200 and 9600
 SP> bauds, and I want to open one session under Cygwin from the
 SP> VT220. Of course something happens under Cygwin, because every
 SP> "enter" opens a new login in the ps list under Cygwin.  But
 SP> nothing appears in the VT220 screen...

 SP> With this previous explain, the question for gurus is: Would I
 SP> need one DEC cable to plug the VT220 (by the way, 25 pin
 SP> interface) in the Laptop Serial `port (9 pin port) ? Or can I use
 SP> a normal serial cable ?

A plain old 25 to 9 Null Modem cable should work.  It sounds like you
have that, because you see something happening at the host end.

There may be a flow control mismatch.  If your PC serial port is set
up to use RTS/CTS flow control, that would account for no output
showing up.  I forgot if the VT220 supports that flavor of flow
control.  Look through the Setup.  If not, change the PC settings to
"no flow control" (or better yet, XON/XOFF, if that's available).

    paul