test-drb April 2002

test-drb@ccmp.vtda.org

280 participants
1162 discussions

by Antonio.Carlini＠riverstonenet.com

>Why is 212992 magic? OK. I'm an idiot :-) RT-11 has a limit on disk size, and my (poor) recollection is that this might be in the region of 64K blocks (512 byte block ... i.e. 16MB per disk). This would be 16384 2048-byte sectors. 13*16384=212992. So my guess is that when you use this RT-11 CD on an RT-11 system, you tell it to map partition 13 (and 14 etc. onwards to the end). In which case writing an image would be a breeze. Create your ISO file system as a binary (ISO9660) image file and overlay onto an image of a full 650MB or 700MB CD. Create images of however many RT-11 "disks" you think you can fit onto the end. Determine where the next 16384 2048-byte boundary is and drop your first RT-11 partition there, then keep overlaying further partitions until the end. OK. I don't know how to do this on Windows 98 with the available tools, so you'll either have to do it on Unix (or OpenVMS) or knock up a quick tool in C for Windows. Or you could ask Tim how he did it (but I bet W98 was *not* part of the answer!). Antonio

23 years, 1 month

Ready for another junk ^H^H^H^H er,ah, computer feast? (Central Florida)

by steven_j_robertson＠hotmail.com

> > Hi All, > > I just talked to Eric Smith and he's going to be visiting this area >(Orlando) around May 17 or 18. I thought it might be a good time for >another Junk Feast. Let me know if you're interested. > > Joe I can probably make it. I'll let you know when the date gets nearer. SteveRob _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com

23 years, 1 month

GEM-OS

by jhking＠airmail.net

> > > Date: Thu, 4 Apr 2002 15:36:04 -0800 (PST) > From: Cameron Kaiser <spectre(a)stockholm.ptloma.edu> > Subject: Re: GEM OS was: CP/M and Imsai > > > I've asked this before, but how close is the Commodore GEOS to the Gem > > one ? The desktop at least is virtually identical. > > I don't think it is, myself. Berkeley Softworks supposedly modeled it on the > Macintosh. > > > Does it have an underlying > > system greatly different from TOS and AES(?) ? > > Not knowing much about the internals of TOS ... > In Geos the whole OS was coded in 6502 assembler. Couldn't make an 8bit gui work with slowpokes like C. GEM and TOS (as I understand) were partly host assembler (8088 or 68000) and part c. No commonality under the hood at all.

23 years, 1 month

Questions regarding Tom Shoppa.

by Antonio.Carlini＠riverstonenet.com

>Are you saying the actual CD image was available as >opposed to the many files that are on the CD? Yes. Four images, one per CD. I don't know if they vanished during the site reorg or whether I just cannot find them right now. >satisfied it is OK. BUT, I also want to burn my own >CD in the same manner. ALSO using Windows 98 (Yeck). Burning under windows is probably not an issue - use something like CDR-Win to make an exact copy to an image file, and then burn that. >BUT, Can anyone help me? I want to copy that same file >to a CD-R or a CD-RW starting at sector 212,992 (just >like Tim Shoppa did) after I have written the files to the CD >under the ISO file structure. Of course, I want to be able >to do this under Windows 98!! Does anyone know if that is >even possible, let alone how it could be done? I don't know the specifics of RT-11s requirements for the CD. I expect that RT-11 sees it as though it were a hard disk of exactly that many blocks (well 4 times the number of CD blocks because of the 2048<->512 byte thing). Many (many) years ago when I used an LSI-11/23 under RT-11, we had a 40MB drive that emulated 4 RL02 drives (or some such). I don't recall if this was done in software or hardware - quite possibly it was a software driver that came with the disk. Why is 212992 magic? What do you do to make this CD visible as 7 (or whatever) disks under RT-11? Essentially your CD is a stream of N 2048 blocks and is presumably seen by RT-11 as such (at a sufficiently low level) and then given meaning by some software layer. A typical method for generating a layout with both ISO and "other stuff" in logically separate areas of the CD would be to start by generating a binary ISO-format file with just the ISO data in. The first 64 2048-byte blocks (or is it 32?) are ignored by the ISO9660 standard - they are deliberately not used. Now create an empty image file, the size of your CD. Overlay the ISO image file onto this. Now you slip the PDP-11 boot block in there and add whatever else you need at the end in whatever format you want. The ISO file structure will be unaffected (so long as you tack things on after its logical end). What you need to find out is RT-11s requirements in this area. Actually doing this under W98 may not be that easy. Typically, when I've done CDs that have both ISO9660 and ODS-2 on them, I've generated the image on OpenVMS and burned the image to CD using a PC. Antonio

23 years, 1 month

Questions regarding Tom Shoppa.

by Antonio.Carlini＠riverstonenet.com

>Ok... I'll bite... what is that "peripheral"? Nukes or something? Not sure I remember this correctly but I have a feeling it was something like the Washington metro - where obviously "Washington" is a code name for some plausible east coast city that actually does have a metro, just in case my memory is failing again :-) Antonio

23 years, 1 month

Amiga A2065 Ethernet cards

by pete＠dunnington.u-net.com

On Apr 11, 3:19, Gary Hildebrand wrote: > Happened to notice they are 10Base2 (BNC connector and AUI interface > (DB15). According to what little I've found on the web, there is an > adapter available that goes from the AUI DB15 to 10BaseT, so I can test > these out through a hub. > > Any comments? Well, assuming you really mean DA15 (not DB15 :-)) then, yes, all you need is a transceiver. The miniature type that fits straight onto the AUI connector is best, and usually cheap and easy to find. After that, it's just a question of having TCP/IP software. -- Pete Peter Turnbull Network Manager University of York

23 years, 1 month

Questions regarding Tom Shoppa.

by mythtech＠mac.com

>>Tim is providing support >>for a $ 10 Billion system of some sort which likely uses VMS. >It's not exaggerated, from what I know of the 'peripheral' attached to >those computers, if anything that's a bit low. Ok... I'll bite... what is that "peripheral"? Nukes or something? -chris <http://www.mythtech.net>

23 years, 1 month

Questions regarding Tom Shoppa.

by Antonio.Carlini＠riverstonenet.com

>Does anyone else have copies of the RSX-11 set of 2 CDs? At one point the RSX, TOPS and RT11 CDs were all available as binary images. I know I downloaded all of them and burned them to CD with no problems. (Well, maybe a slight issue with the RT11 one IIRC - I used W98 and whatever burning software I used was not too happy verifying it ... seemed usable though). Tim does not seem to have any problems with people downloading large amounts of data so rather than ask for a CD, just burn one. Antonio

23 years, 1 month

Ultrix root password

by cdl＠proxima.ucsd.edu

> From: "Sean 'Captain Napalm' Conner" <spc(a)conman.org> > Subject: Re: Ultrix root password > To: classiccmp(a)classiccmp.org > Date: Thu, 11 Apr 2002 15:10:33 -0400 (EDT) > In-Reply-To: <Pine.BSF.4.33.0204111011480.68023-100000(a)spaz.catonic.net> from "Kris Kirby" at Apr 11, 2002 10:12:17 AM > > It was thus said that the Great Kris Kirby once stated: > > > > On Mon, 1 Apr 2002, ajp166 wrote: > > > Boot to non-timesharing then use ED (sorry no other choice usually) > > > to edit passwd file. set the Root user password to NULL (no characters). > > > boot to timeshare level and then log in as root with no password. > > > > For those of us "young'uns", would someone point me to a guide on "ED"? > > Isn't it like vi, only without being full screen, and without prompts? > > -spc (Or am I thinking of ex?) You are probably thinking of "ex". But "ed" is a proper subset of "ex". The classic answer to the question "point me to a guide" is $ man ed executed on any Unix or Unix-like system. If you don't have one of those running, you can try, with your favorite web browser, a Google search with the key words: unix man ed carl

23 years, 1 month

Ultrix root password

by ajp166＠bellatlantic.net

From: Brian Roth <broth(a)heathers.stdio.com> >The MV's have Ultrix on them and boot fine BUT..... > > >Is there an easy way to bust the root password for Ultrix on the console? Yes. Boot to non-timesharing then use ED (sorry no other choice usually) to edit passwd file. set the Root user password to NULL (no characters). boot to timeshare level and then log in as root with no password. My ultrix manuals are burried or I'd give more detail. Allison

23 years, 1 month

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test-drb April 2002