GBMLOGO - Make a boot logo for OS/2 and eComStation

Introduction

  usage: gbmlogo [-e] [-hN] [--] filename.ext{,opt}
  flags: -e             error-diffuse to RGBI
         -hN            halftone to RGBI
                        N is a halftoning algorithm number (default 0)
                        -e and -h can't be used together
         filename.ext   640x400 bitmap
                        bitmap formats and options as before

At boot time OS/2 and eComStation look for the file \OS2LOGO and displays this as the boot logo.

This logo is in a special format, compressed using the EXEPACK algorithm.

The IBM OS/2 Developer Connection CDs have included a tool called MAKELOGO, which takes dumps of the R,G,B and I planes from the VGA frame buffer, and writes an \OS2LOGO.

GBMLOGO takes in a 640x400 bitmap in any format, and writes out the files needed by MAKELOGO.


Installing GBMLOGO

Just unzip the GBMOS2PM package and copy the gbmlogo.exe, file into a directory somewhere.

If you've already got the GBMOS2 package installed into a directory, you might as well put this new file in there too.

GBMLOGO needs gbm.dll which is part of the GBMOS2 package. Either copy it into the same directory as gbmlogo.exe or to a directory defined in LIBPATH in the CONFIG.SYS.