Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!usc!zaphod.mps.ohio-state.edu!uwm.edu!bionet!agate!ucbvax!MSUS1.BITNET!WNIMHACK%WSU.DECNET From: WNIMHACK%WSU.DECNET@MSUS1.BITNET ("Bruce R. Mitchell / WNIMHACK%WSU.DECNET@MSUS1.BITNET") Newsgroups: comp.sys.dec.micro Subject: P/OS task image Message-ID: Date: 11 Jan 91 00:27:00 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 25 Billy D'Augustine in a message of 9-Jan-91 inquires about the compatibility of RSX task images and the P/OS operating system. RSX-11M-Plus supports two variants of task headers; resident and nonresident. Without going into unnecessary detail on the differences between the forms, only nonresident header task images will run under P/OS. M-Plus permits overriding the header form with the INStall switch /XHR=(yes, no) but P/OS does not support this. Therefore, any task image brought into a P/OS system from an M-Plus system must have been built with the TKB /XH switch to force external headers. The usual symptom of this problem is that P/OS complains with an error message of the form: INS -- Task has a resident header Glenn Everhart very correctly also points out that Kermit does not create a contiguous file, and that PIP /NV/CD/CO must be used to create a new, contiguous task image from the received file.