Subject: 1.900: SCSI-1 and SCSI-2 "interoperability" got you confused? A. SCSI-1 devices are supported on a SCSI-2 adapter. This config will provide SCSI-1 performance. B. SCSI-2 devices are supported on a SCSI-1 adapter. This config will provide SCSI-1 performance. C. A mix of SCSI-2 and SCSI-1 devices are supported on a SCSI-1 adapter. All devices will have SCSI-1 performance. D. A mix of SCSI-2 and SCSI-1 devices are supported on a SCSI-2 adapter. SCSI-2 devices will have SCSI-2 performance (10 MB/sec) and SCSI-1 devices will have SCSI-1 performance (4-5 MB/sec). ------------------------------ Subject: 1.901: How to get your keyboard back after unplugging it from the 6000 From: Mickey Coggins and Anne Serre and L. Mark Larsen When you unplug your keyboard from a running system, and plug it back in, the key mapping is wrong. For example, keys like Caps Lock and Ctrl don't work as designed. Solution: Type at the command line /usr/lpp/diagnostics/da/dkbd Your screen goes black, you hear a few beeps, and your keyboard is reset. It works with any environment, Xwindows, hft, NLS... For Models 220, 230 and M20, use the following commands: /usr/lpp/diagnostics/da/dkbd /usr/lpp/diagnostics/da/dkbdsal (for the 220) After running the keyboard diagnostics to reset keyboard mappings, the repeat rate is also reset to some slow value (11, according to the man page). If the user is in X, you need to open an hft window. Do this with "xopen /bin/csh". Once you have an hft window, run "chhwkbd -r30". [Editor's note: By unplugging & plugging a keyboard/mouse on a live system you may/will damage/zap/fry/destroy the motherboard] ------------------------------ Subject: 1.902: How do I set up pcsim, the DOS emulator? [Editor's Note: this product does not exist in AIX 4.x.] You must have a bootable DOS diskette to install pcsim. Either DOS 3.3, 4.x, or 5.0 will work. IBM do not officially support DOS 5.0 for pcsim but I have no problems with it. Just don't try to be fancy with the UMB and memory manager stuff. With a bootable DOS disk in the drive, do: $touch /u/dosdrive (this is the AIX file for DOS emulation) $pcsim -Adiskette 3 -Cdrive /u/dosdrive You would now get an A prompt. Type: A> fdisk Create the virtual C drive of whatever size you choose. Make it large enough for your needs since you cannot enlarge it later. A> format c: /s (to format the virtual C drive) Now exit from pcsim with ESCpcsim (Esc key followed by pcsim). Now create a simprof file. Following is a starter: Adiskette : 3 Cdrive :/u/dosdrive lpt1 : name of printer queue refresh : 50 dmode : V mouse : com1 You can now start pcsim anytime by typing pcsim. Make sure no floppies are in the drive. For further information, refer to publication SC23-2452, Personal Computer Simulator/6000 Guide and Reference. ------------------------------ Subject: 1.903: How do I transfer files between AIX and DOS disks? In the AIX package bos.dosutils are commands for transferring files between DOS diskettes and AIX. The commands are dosread, doswrite, dosdir, dosdel, and dosformat. Many users have mentioned that the mtools package from prep.ai.mit.edu is better than the native AIX programs. ------------------------------ Subject: 1.904: Where is the crypt program? The crypt *program* (as opposed to the crypt subroutine) has been deleted to conform to U.S. law regarding export of missile, ammunitions, nuclear and cryptographic technology. Other programs such as PGP are available, but their use and/or possesion may be subject to local laws and regulations. France is such a place. If anyone has a better answer to this question (like places where crypto devices are illegal/severely restricted), feel free to contribute it. ------------------------------ Subject: 1.905: How do I play audio CDs? From: woan@austin.ibm.com (Ronald S. Woan) Get xmcd by anonymous FTP from ftp.x.org in /contrib/applications/xmcd/ ------------------------------ Subject: 1.906: How can I get the mouse back after unplugging it? /usr/lpp/diagnostics/da/dmousea [Editor's note: By unplugging & plugging a keyboard/mouse on a live system you may/will damage/zap/fry/destroy the motherboard] ------------------------------ Subject: 1.907: Where can I get source code to the operating system binary xxxxx? AIX source code is not generally available. Two other UNIX OS' do make their source available, Linux & freeBSD. Check and ------------------------------ Subject: 1.908: What's the difference between the POWER and POWERPC architectures? Read the POWERPC FAQ at ------------------------------ Subject: 1.909: Will there be date rollover problems in the year 2000? From: mbrown@austin.ibm.com (Mark Brown) IBM has a major corporate-wide push for *all* of its software products to be "safe" in this regard by the end of 1996. is the general-purpose [Year 2000] URL for IBM. As far as AIX is concerned, we had to fix three things in AIXv4.1.4 (some logging commands handled date ranges wrong) as PTFs, but other than that, we are there. ...and we handle the leap year issue correcly. also. ------------------------------ Subject: 1.910: How can I build an "installp format" file? Jim Abbey has a tool called "lppbuild". It is now available from "aixpdslib.seas.ucla.edu" in either of /pub/lppbuild/RISC/3.2/src/lppbuild.1.0.tar.Z /pub/lppbuild/RISC/4.1/src/lppbuild.1.0.tar.Z Both are identical and the procedures also work on 4.2. Ciaran Diegnan has built a tool called "mklpp". You can retrieve a copy (along with many other smit-installable freeware packages) from . ------------------------------ Subject: 1.911: Is there a generic SCSI driver for AIX? From: Rogan Dawes Yes. Matthew Jacob (mjacob@feral.com) has written a generic SCSI driver for AIX 4.1. It can be found at . ------------------------------ Subject: 1.912: Viruses or virus scanning on AIX? From: mww@microfocus.com (Michael Wojcik) FWIW, AIX comes with a virus-scanning utility (/usr/bin/virscan), though IIRC the original version had an empty signature file (in /usr/lib/security/scan/virsig.lst) and even the later populated signature file only contains PC viruses. Quoth the man page, "at this time [virsig.lst] contains no known AIX virus signatures". Apparently we are to infer that there *were* no known AIX virus signatures. I note that my 4.2.1 AIX system still has the 1991 signature file. Even a DOS-only virus list could potentially be useful on a Unix file server, though. Provided, of course, that it had a recent signature list (and preferably mutant-detection and similar heuristics), which virscan probably does not. And to be fair there are plenty of Unix vulnerabilities, and even viruses potentially among them. David Harley, keeper of the alt.comp.virus FAQ, mentioned some "lab" Unix viruses when this thread appeared in October '87, and I recall a discussion of using crypto hashes to validate major system commands on some Unix group not that long ago - which is essentially virus-scanning technology, though not necessarily for the same purpose it generally serves on PCs. That said, viruses are not the problem for Unix systems that they are for PCs. Network security, guessable usernames and passwords, and the like should generally be a higher priority. ------------------------------ Subject: 1.913: How do I determine the clock frequency of a RS/6000 by software ? From: Franz Pestenhofer The answer seems to be "There is no way to find out the clock frequency with a piece of software". [Editor's notice: on CHRP machines there is information on the open firmware] ------------------------------