Running Topaz Applications on Ultrix

    It is possible to write many application programs that will work with either the Taos or the Ultrix implementation of Topaz. Specific differences between the two implementations of the OS interface are noted where relevant in Sections 3 through 5. This appendix discusses additional differences in the two implementations of the OS and other Topaz interfaces. (Perhaps someday there will be a separate Topaz Programmer's Manual.) Of necessity, this appendix discusses implementation details.

Although Taos emulates an approximation to the Ultrix 1.1 kernel-call interface (see Appendix D, page ), there are different libraries for linking Topaz applications to run on Taos or Ultrix. Some applications linked for Ultrix may in fact run on Taos, but many will encounter runtime errors or will suffer bad performance.

Everything not mentioned in the following sections is implemented the same way on both systems.