wu@mlswindow.uucp (Rocky Wu) (09/02/89)
Does anyone know whether it is feasible to implement X under RS232 direct connection? As I understand, all X terminals have some kind of ethernet software built-in. Would it be possible to have just the serial connection? If it is performance, could you give a rough "figure" as how bad it is?? Any input would be appreciated!! Rocky
klee@gilroy.pa.dec.com (Ken Lee) (09/06/89)
In article <34217@mlswindow.uucp>, wu@mlswindow.uucp (Rocky Wu) writes: > Does anyone know whether it is feasible to implement X under RS232 direct connection? > As I understand, all X terminals have some kind of ethernet software built-in. > Would it be possible to have just the serial connection? The GraphOn X terminal supports a serial interface. You open a socket to a "mini-server" running on a UNIX host. This mini-server converts the X protocol to a smaller protocol based on SLIP and sends it to the terminal via a serial wire or high speed modem. Performance may be adequate, depending on your expectations. Images, pixmaps, and mouse following are not especially fast. Ken Lee DEC Western Software Laboratory, Palo Alto, Calif. Internet: klee@decwrl.dec.com uucp: uunet!decwrl!klee
dc@go3.graphon.UUCP (Darren Croke) (09/06/89)
In article <1773@bacchus.dec.com> klee@gilroy.pa.dec.com (Ken Lee) writes: >In article <34217@mlswindow.uucp>, wu@mlswindow.uucp (Rocky Wu) writes: >> Does anyone know whether it is feasible to implement X under RS232 direct connection? >> As I understand, all X terminals have some kind of ethernet software built-in. >> Would it be possible to have just the serial connection? > >The GraphOn X terminal supports a serial interface. You open a socket >to a "mini-server" running on a UNIX host. This mini-server converts >the X protocol to a smaller protocol based on SLIP and sends it to the >terminal via a serial wire or high speed modem. Performance may be >adequate, depending on your expectations. Images, pixmaps, and mouse >following are not especially fast. Just for the record, The GraphOn X server is a complete implementation of the X11R3 server with our own DDX added. Our DDX communicates with the terminal via a tty, (or pty), device using a terse protocol, not based on SLIP. Darren Croke dc@graphon.uucp