hgw@rht32.pcs.com (h.-g. willers) (02/14/91)
Hi out there! What is the current status of XINU? I am looking for a real small realtime executive, that can be ported to a RISC processor (MIPS R3000). What are the processors, XINU has yet been ported to? H.-G. -- H.-G. Willers PCS-Mail: hgw internal phone ( -271 ) DOMAIN: hgw@rht32.pcs.de (EUR) or hgw@rht32.pcs.com (US) BANG: ..unido!pcsbst!hgw (EUR) or ..pyramid!pcsbst!hgw (US)
sdo@CS.PURDUE.EDU (Shawn Ostermann) (02/18/91)
hg> What is the current status of XINU? I am looking for a real small hg> realtime executive, that can be ported to a RISC processor (MIPS hg> R3000). What are the processors, XINU has yet been ported to? Current Xinu research is in three areas: 1) Virtual Memory The Xinu virtual memory system is up and running on several different platforms. VM Xinu separates the notions of processes and address spaces. Different processes can run in the same address space (threads). Processes can exist inside the kernel (kernel threads) or outside (user processes). 2) TCP/IP We're in the last stages of testing the new Xinu TCP/IP code. That code was developed in conjunction with Dr. Comer's newest book on TCP/IP internals, and should be out soon (I don't know the date) 3) Unix emulation We've been developing a limited Unix emulation library which allows us to write Unix-like user processes that run under Xinu. To date, we have ported the GNU version of awk (gawk), mg (a small emacs-type system) several other Unix utilities, and the MIT X server. The only version of Xinu that currently supports all three is the port that we've been doing to the DECstation 3100. That work has been funded, in part, by DEC, NSF, and AT&T. We have a few DECstations running the X11 server that we've been using to test the TCP code as well as the virtual memory. The MIPs R2000 chip in the DECstation is an excellent platform for Xinu and VM Xinu because of its minimalist approach to machine architecture. I'm not presently sure of the exact status of the DECstation software, in terms of our ability to distribute it in the manner to which we've become accustomed. Some of the information for the port necessarily came from DEC, and we haven't had the chance to discuss its public distribution with them. If you're interested in getting a copy of this software, let me know. That will allow me to give DEC some sort of idea of the interest in the software. Please don't infer from this that DEC is _unwilling_ to allow us to make this software available, I just need to iron out the details with them. Shawn ----------------------------------------------------------------------------- Email.header*fromString: Shawn Ostermann Internet: sdo@cs.purdue.edu AT&T: (317) 494-7826 UUCP: {ucbvax,decvax,hplabs}!purdue!sdo Fax: (317) 494-0739 -----------------------------------------------------------------------------