I've determined the that three disk I'm missing and are preventing me
from installing the compilers are:

(1) "IRIX Development Foundation 1.2 for IRIX 6.5"

(2) "ProDev Developers Suite"

(3) "Compiler Execution Environment 7.3 for IRIX 6.5"

If anybody has copies or can make copies, I'd really appreciate it.

Thanks,
Derek