jad@dayton.UUCP (J. Deters) (07/03/90)
The following message is being posted on behalf of a friend who does not currently have a news feed. Please do not post your response as I do not read this newsgroup. ------ Wanted: ram disk for NCR Tower 850. Crystal Foods would like to experiment with a ram: disk on our Tower 850 just like I use on my Amiga at home. Of course, SysV UNIX doesn't think this is a standard option. So -- does anyone out there have or know of a ram: disk for the Tower family? How about for SysV and let me worry about porting it? Please drop me a line at: joel@crystal.MN.ORG, which is NOT the originator of this message. (I haven't talked The Boss into a news feed here yet, so I impose on my friends...) Thanks. -Joe ---- Joe Larson joel@crystal.mn.org 612-542-1245(w) Crystal Foods 612-591-1037(h) 6465 Wayzata Blvd St. Louis Park, Mn 55426 -- J. Deters +---------+ INTERNET: jad@dayton.DHDSC.MN.ORG | S H * T | UUCP: ...!bungia!dayton!jad +---------+ ICBM: 44^58'36"N by 93^16'12"W "Vanna, I'd like to buy a vowel."
bartkus@ncrats.Atlanta.NCR.COM (Patrick Bartkus) (07/05/90)
In article <7415@dayton.UUCP> joel@CRYSTAL.MN.ORG (Joe Larson) writes: > >Wanted: ram disk for NCR Tower 850. > >Crystal Foods would like to experiment with a ram: disk on our Tower 850 >just like I use on my Amiga at home. Of course, SysV UNIX doesn't think >this is a standard option. > A long time ago, I took a course called "Writing and Implementing UNIX Device Drivers" NCR Education Services (formerly CASE) course number B14105. One of the exercises for this class was something similar. We created an "in-memory" file system that could be mounted, fsck-ed, etc... We did this by creating a device driver in the kernel that instead of controlling a "device" it "controlled" a chunk of memory. The purpose was to put in diagnostic printf(3c) statements to see what functions of the the kernel device driver got involved when doing things such as fsck. If you had a uni-processor machine and you knew how to write device drivers and you had a machine that you could safely play around with the kernel then you probably could do something like this. But on a multi-processor Tower 32/850 that probably is in production daily, I would not attempt it. -- Patrick Bartkus Software Support Automation patrick.bartkus@Atlanta.NCR.COM Atlanta Remote Support {gatech|ncratl|ncrcae}!ncrats!bartkus V/P 755-7758