Hello, everybody!
I was reported a bug in the BO5 screen drivers for Linux console (something like a CRT for GPC): on some machines the program stops with a runtime error "cannot access video memory", even if compiling and executing as root.
To work around, use the TERMCAP version instead; the only visible differences are that you (1) have to specify the termcap library when compiling:
gpc -I /usr/src/bo5 -D TERMCAP hallo.pas -ltermcap -o hallo
and that (2) you have to set the CL_COLOR environment variable in order to get colors:
export CL_COLOR=YES
The next version will fix this bug (I will probably rewrite the Linux drivers in complete).
Yours,
Peter