billy@VENERA.ISI.EDU (Billy Brackenridge) (03/16/89)
Has anyone written a BootP server for the PC/IP package. I mean a BootP that runs on a PC. Also has anybody written ROMABLE code for a BootP client? Most Ethernet cards have a socket for ROM. Are there any development kits for any Ethernet cards to aid in developing boot ROM? Has anyone modified Microsoft C startup code so one can write ROMABLE C code that makes no DOS calls. I am not limiting myself to PD packages. If any of the commercial vendors support this stuff I'd like to hear.
bkc@OMNIGATE.CLARKSON.EDU (Brad Clements) (03/16/89)
I have written Bootp Client code that is rom'd into an 8K eprom for use with a Micom-Interlan NI5210. It is based in a distribution for Sun systems that was posted by someone at Stanford. (originally it required 16K eproms, quite a bit of paring down was done. Currently 8189 bytes are used.) On startup, the bootp rom sends a bootp request packet. A bootp server responds with ip address, server address, boot file name, etc. The eprom then uses tftp to download the boot file (which is a rom disk image) into the PC's ram. The PC is then boot'd from the rom disk image. I can put whatever I want onto the rom disk image (MSDOS + pc-nfs etc) currently our system loads MIT's RVD (Remote Virtual Disk == Poor man's Ndisk) I have a utility that extracts the bootp reply information from memory and loads it into the netcust.sys driver for later use by RVD and PC/IP programs. (We load a packet driver for the NI5210, and a packet multiplexor which traps RVD packets. This way we can run RVD and NCSA Telnet simultanously). Another utility releases the bootp rom disk code enabling the real floppy drive A: to be used as normal. The bootp rom allows a user to specify a different server address and/or boot file as well as bypassing the bootp process and booting from the real floppy disk. It also does a TDR of the ethernet on initialization and can inform the user if the ethernet cable is open, shorted or has transceiver problems (more or less). Boot files up to 325K (or there abouts) can be downloaded into a 512K machine. The boot rom moves the first 9 sectors of the rom disk to the high end of memory so the FAT and directories don't get trashed as programs are loaded. Works great. Its written in Turbo C 2.0. The only bug I've seen is that a user can not delete files from the rom disk image without crashing the system. But the copy command does work... We are using a Bootp server developed by Mr. Walter Wimer III of Carnegie Mellon University. The server currently runs on a 4.3BSD MVax II and several Sun systems and works very nicely. | Brad Clements bkc@omnigate.clarkson.edu bkc@clgw.bitnet | Network Engineer Clarkson University (315)268-2292
jbvb@ftp.COM (James Van Bokkelen) (03/18/89)
In article <CMM.0.88.605991738.billy@venera.isi.edu>, billy@VENERA.ISI.EDU (Billy Brackenridge) writes: > Has anyone written a BootP server for the PC/IP package. I mean a BootP that > runs on a PC. Provided that the CMU public-domain Unix bootp server doesn't make extensive use of Unix functions that aren't in Microsoft C, it should port to one of the high-quality DOS socket (PC/TCP or PC/NFS) emulations fairly simply. Typically, a DOS socket library doesn't support any file operations on a socket except read(), write() and close(). You can't use dup(), putc(), fgets() or other high-level functions on a socket, and child processes don't inherit sockets. Neither does the DOS library include dbm(), if that is how CMU stores the data. -- James B. VanBokkelen 26 Princess St., Wakefield, MA 01880 FTP Software Inc. voice: (617) 246-0900 fax: (617) 246-0901
ddp+@ANDREW.CMU.EDU (Drew Daniel Perkins) (03/20/89)
The CMU Unix bootp server does make use of the UNIX ARP related ioctls. I.e. it sometimes has to add an ARP entry to the cache in order to send a reply. I don't think this is supported in PC/TCP or PC/NFS. It would also be hard to get around... Drew
dab@ftp.COM (Dave Bridgham) (03/23/89)
I once did a BOOTP server that avoided stuffing the ARP cache by just broadcasting the reply. It's a little anti-social but I didn't have a mechanism for getting to the ARP cache at the time. David Bridgham
fks@VAX.FTP.COM (Frances Selkirk) (05/14/91)
We have the CMU bootp server available for anonymous ftp from vax.ftp.com. It's in the file pub/pc802/bootpd.tar Frances Kirk Selkirk info@ftp.com (617) 246-0900 FTP Software, Inc. 26 Princess Street, Wakefield, MA 01880