Print Server Doesn't Support Vertical Channel Select SCS Code

MORE INFORMATION

With the fix applied, the Ppd3270.dll file is changed so that it recognizes the VCS command and handles it appropriately.

In one scenario, a Host was sending down the following SCS sequence:

   2B C2 05 62 01 62 0B
				

This is a Set Vertical Format command, with the following parameters:

   05 - length of data
   01 - top margin
   62 - bottom margin
        0B - set vertical tab stop to line 11
				

The Host then sent down the following:

   04 82
				

This is a Vertical Channel Select command (04), selecting vertical channel 2 (82). Vertical channel 1 is always the top margin and vertical channel 2 is the first vertical tab stop as defined in the Set Vertical Format command above (that is, line 11). Print Server processes this command by issuing 1 line feed, but it should issue 10 line feeds (to get to line 11.

This can be clearly seen with extended job tracing turned on:

   s3pr1dat.c(313)     byte: 04 ->  LF/VCS
   s3prdscs.c(61)      ******* FLUSH DATA **********
   winvprtj.c(4725)    LF - MOVE PAGE POSITION DOWN A LINE LINE
   s3prdscs.c(42)      ******* PARSE DATA **********
   s3pr1dat.c(2182)    byte: 82 ->  second byte of VCS - ignore
				

Printserver is ignoring the '82.'