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RE: [pups] Help! Standalone DZ-11 driver

by Ian King

Warren, I have the DZ-11 docs; I'll scan the relevant sections and mail it to you. -- Ian -----Original Message----- From: Warren Toomey [mailto:wkt@henry.cs.adfa.edu.au] Sent: Sunday, January 28, 2001 5:25 PM To: PDP-11 Unix Preservation Society Subject: [pups] Help! Standalone DZ-11 driver Hi all, I'm working on a new version of my Vtserver, which allows a PDP-11 with no tape drive to boot from a Unix/Linux server (via serial cable) and install a UNIX. See ftp://minnie.cs.adfa.edu.au/pub/PDP-11/Vtserver At present I'm working on a new version which uses the 2.11BSD boot code so as to support more disk drives. The work in progress is at: http://minnie.cs.adfa.edu.au/Vtserver. At present it's not usable unless you have a PDP-11/45. I've got a potential user with an 11/34, two RK05s and a DZ-11. I can't find any details of DZ-11 here in my peripherals handbooks, and the 2.11 kernel drivers are a bit too complicated to read. My existing KL-11 driver is below. Can someone come up with a standalone equivalent for a DZ-11, or point me at some docs? I'll be away from 1st to 14th Feb, so there may be some delays in responding. Thanks all, Warren struct vtdevice { int rcsr,rbuf; int tcsr,tbuf; }; #define NVT 2 struct vtdevice *VTcsr[NVT + 1] = { (struct vtdevice *)0176500, /* We use VTcsr[0] unit 1 */ (struct vtdevice *)0, (struct vtdevice *)-1 }; /* Get a character, or timeout and return with hitim zero */ char vtgetc() { register c; VTcsr[0]->rcsr = 1; hitim=3; lotim=65535; while ((VTcsr[0]->rcsr&0200)==0) { lotim--; if (lotim==0) hitim--; if (hitim==0) { putchar('t'); return(0); } } c = VTcsr[0]->rbuf; return(c); } vtputc(c) register c; { register s; while((VTcsr[0]->tcsr&0200) == 0) ; s = VTcsr[0]->tcsr; VTcsr[0]->tcsr = 0; VTcsr[0]->tbuf = c; VTcsr[0]->tcsr = s; } Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id JAA24991 for pups-liszt; Wed, 31 Jan 2001 09:17:28 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Wed Jan 31 08:13:30 2001 Received: from henry.cs.adfa.edu.au (henry.cs.adfa.edu.au [131.236.21.158]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id JAA24987 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 09:17:26 +1100 (EST) (envelope-from wkt(a)henry.cs.adfa.edu.au) Received: (from wkt@localhost) by henry.cs.adfa.edu.au (8.11.1/8.9.3) id f0UMDUQ35508; Wed, 31 Jan 2001 09:13:30 +1100 (EST) (envelope-from wkt) From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Message-Id: <200101302213.f0UMDUQ35508(a)henry.cs.adfa.edu.au> Subject: Re: [pups] A bootable disk image for a PDP-11/34? In-Reply-To: <200101301820.KAA24283(a)chiton.ucsd.edu> from Carl Lowenstein at "Jan 30, 2001 10:20:58 am" To: Carl Lowenstein <cdl(a)mpl.ucsd.edu> Date: Wed, 31 Jan 2001 09:13:30 +1100 (EST) CC: pups(a)minnie.cs.adfa.edu.au Reply-To: wkt(a)cs.adfa.edu.au X-Mailer: ELM [version 2.4ME+ PL68 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk In article by Carl Lowenstein: > Just from the historical point of view, note that the first major > file on a genuine 6th Edition distribution tape _is_ a bootable > RK05 image. Something like 4000 blocks. > > carl Yes, but it doesn't boot on an 11/34 :( That's the problem. Cheers, Warren Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id KAA25322 for pups-liszt; Wed, 31 Jan 2001 10:28:22 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ian King <iking(a)microsoft.com> Wed Jan 31 08:38:15 2001 Received: from mail3.microsoft.com (mail3.microsoft.com [131.107.3.123]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with SMTP id KAA25314 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 10:28:18 +1100 (EST) (envelope-from iking(a)microsoft.com) Received: from 157.54.9.100 by mail3.microsoft.com (InterScan E-Mail VirusWall NT); Tue, 30 Jan 2001 14:48:28 -0800 (Pacific Standard Time) Received: by inet-imc-03.redmond.corp.microsoft.com with Internet Mail Service (5.5.2653.19) id <D8RC2W0X>; Tue, 30 Jan 2001 14:38:29 -0800 Message-ID: <8D25F244B8274141B5D313CA4823F39C018EEB13(a)red-msg-06.redmond.corp.microsoft.com> From: Ian King <iking(a)microsoft.com> To: "'Ken Wellsch'" <kwellsch(a)tampabay.rr.com>, Carl Lowenstein <cdl(a)mpl.ucsd.edu> Cc: pups(a)minnie.cs.adfa.edu.au Subject: RE: [pups] A bootable disk image for a PDP-11/34? Date: Tue, 30 Jan 2001 14:38:15 -0800 X-Mailer: Internet Mail Service (5.5.2653.19) Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Ken, I tried using that image and gunzip told me there was a crc error; it wouldn't unzip it. (I downloaded it three times, just in case there was a transmission error -- twice by ftp, once by http.) I've also tried the "Dennis" images, which are supposedly straight RK05 images; E11 won't boot 'em. One issue on which I'm not clear: where is the boot address? Stuff at loc 0 doesn't look like boot instructions. If I could get an image to run in an emulator (as I mentioned, I'm running E11 from DBit), I'd write some cheesy little loader to bring it down the serial line (I already have it sketched out); but until I can at least get one to boot in the emulator, I'm reluctant to spend the hours (at 9600 baud) to spray it onto a disk. <sigh> Any suggestions you may have would be greatly appreciated. -- Ian -----Original Message----- From: Ken Wellsch [mailto:kwellsch@tampabay.rr.com] Sent: Tuesday, January 30, 2001 10:30 AM To: Carl Lowenstein Cc: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? I'll second that. The V6 tape image I provided to PUPS has the usual boot blocks at the start of the tape then as I recall three RJ05 disk images. Long long ago I think I got folks interested in using emulators like Bob Supnik's by using the first tape disk image as the "disk" image for "sim" and booted V6... but it has been more than 6 years now since I did that and I may be rusty on details. -- Ken Carl Lowenstein wrote: > > Just from the historical point of view, note that the first major > file on a genuine 6th Edition distribution tape _is_ a bootable > RK05 image. Something like 4000 blocks. > > carl > > carl lowenstein marine physical lab u.c. san diego > {decvax|ucbvax} !ucsd!mpl!cdl cdl(a)mpl.ucsd.edu > clowenstein(a)ucsd.edu > > > From owner-pups(a)minnie.cs.adfa.edu.au Tue Jan 30 08:17 PST 2001 > > From: Ian King <iking(a)microsoft.com> > > To: "'wkt(a)cs.adfa.edu.au'" <wkt(a)cs.adfa.edu.au>, > > PDP-11 Unix Preservation Society <pups(a)minnie.cs.adfa.edu.au> > > Subject: RE: [pups] A bootable disk image for a PDP-11/34? > > Date: Mon, 29 Jan 2001 23:19:44 -0800 > > > > In fact, if someone has RK05s and isn't too far away, I'd love to get a > > bootable image on an RK05 cartridge -- of course I'd pay postage both ways. > > (I even have some original shipping boxes.) > > > > -----Original Message----- > > From: Warren Toomey [mailto:wkt@henry.cs.adfa.edu.au] > > Sent: Monday, January 29, 2001 8:44 PM > > To: PDP-11 Unix Preservation Society > > Subject: [pups] A bootable disk image for a PDP-11/34? > > > > > > He'd like a 6th Edition bootable RK05 disk image that he can download > > onto his real disk. > > > > Many thanks all! > > > > Warren > > Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id KAA25337 for pups-liszt; Wed, 31 Jan 2001 10:29:33 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ken Wellsch [mailto:kwellsch@tampabay.rr.com] Wed Jan 31 09:27:56 2001 Received: from arundel.fortyfour.org (138bus2.tampabay.rr.com [24.94.138.2]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id KAA25333 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 10:29:30 +1100 (EST) (envelope-from kwellsch(a)tampabay.rr.com) Received: from tampabay.rr.com (localhost [127.0.0.1]) by arundel.fortyfour.org (8.11.0/8.11.0) with ESMTP id f0UNRuR29214; Tue, 30 Jan 2001 18:27:56 -0500 (EST) Message-ID: <3A774DFC.8A3260E8(a)tampabay.rr.com> Date: Tue, 30 Jan 2001 18:27:56 -0500 From: Ken Wellsch <kwellsch(a)tampabay.rr.com> X-Mailer: Mozilla 4.76 [en] (X11; U; NetBSD 1.5.1_ALPHA i386) X-Accept-Language: en MIME-Version: 1.0 To: Ian King <iking(a)microsoft.com> CC: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? References: <8D25F244B8274141B5D313CA4823F39C018EEB13(a)red-msg-06.redmond.corp.microsoft.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Hi Ian, Indeed, looks like there has been some bit rot on the archive... sigh. Luckily I am a pack rat and have copies of my Waterloo days data. The images are all clean there. Curiously enough I even found the directory where I ran that simulation (circa Oct/94 I see). I just rebuilt the code there and ran it on my NetBSD/i386 system and it boots V6 just fine. In case you don't read minds, after doing the 'attach ...' then 'boot rk0' the intuitive V6 boot prompt '@' is where you type 'rkunix' for example B^) Almost instantly I had a 'login:' prompt, and the image is off the tape so there is no root password set... Don't forget to type 'date' when logged in ... it is a hoot to see B^) Oh heck, never thought to actually try to set the date, post 2000... maybe better to let it live back in 1975... I've tar/gzip'ed the bundle. Do you want me to try and UUencode it and mail it to you? It is nearly 1 Mbyte in binary form... Oh yeah, as Warren mentioned, stock V6 does not run on a '34. I think it ran on a '40. I know it can run on a '34 because in 1980 I started using UNIX, V6 running on a '34 B^) Cheers, -- Ken Ian King wrote: > > Ken, I tried using that image and gunzip told me there was a crc error; it > wouldn't unzip it. (I downloaded it three times, just in case there was a > transmission error -- twice by ftp, once by http.) I've also tried the > "Dennis" images, which are supposedly straight RK05 images; E11 won't boot > 'em. One issue on which I'm not clear: where is the boot address? Stuff at > loc 0 doesn't look like boot instructions. > > If I could get an image to run in an emulator (as I mentioned, I'm running > E11 from DBit), I'd write some cheesy little loader to bring it down the > serial line (I already have it sketched out); but until I can at least get > one to boot in the emulator, I'm reluctant to spend the hours (at 9600 baud) > to spray it onto a disk. <sigh> > > Any suggestions you may have would be greatly appreciated. -- Ian Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id KAA25365 for pups-liszt; Wed, 31 Jan 2001 10:32:27 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Carl Lowenstein <cdl(a)mpl.ucsd.edu> Wed Jan 31 09:30:55 2001 Received: from chiton.ucsd.edu (chiton.ucsd.edu [192.135.238.128]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id KAA25361 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 10:32:23 +1100 (EST) (envelope-from cdl(a)mpl.ucsd.edu) Received: (from cdl@localhost) by chiton.ucsd.edu (8.9.3/8.9.3) id PAA29420; Tue, 30 Jan 2001 15:30:55 -0800 (PST) Date: Tue, 30 Jan 2001 15:30:55 -0800 (PST) From: Carl Lowenstein <cdl(a)mpl.ucsd.edu> Message-Id: <200101302330.PAA29420(a)chiton.ucsd.edu> To: wkt(a)cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? Cc: pups(a)minnie.cs.adfa.edu.au Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk > From wkt(a)henry.cs.adfa.edu.au Tue Jan 30 14:16 PST 2001 > From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au> > Subject: Re: [pups] A bootable disk image for a PDP-11/34? > To: Carl Lowenstein <cdl(a)mpl.ucsd.edu> > Date: Wed, 31 Jan 2001 09:13:30 +1100 (EST) > CC: pups(a)minnie.cs.adfa.edu.au > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > > In article by Carl Lowenstein: > > Just from the historical point of view, note that the first major > > file on a genuine 6th Edition distribution tape _is_ a bootable > > RK05 image. Something like 4000 blocks. > > > > carl > > Yes, but it doesn't boot on an 11/34 :( > That's the problem. > > Cheers, > Warren Why, said he wonderingly. Is the 11/34 one of those machines that does not have a directly addressable PSW at 177776 so it must be done with MPTS and MFPS instructions? Thats all I can think of immediately. Pulling out my handy PDP-11 architecture handbook, I find this to be so. There are some other differences between 11/34 and 11/40-45 but this one would be a real show-stopper. The modifications to 6th Ed. Unix to take care of this would be concentrated in the save/raise/lower processor priority routines. Just offhand I don't think one could make a zero-length binary patch that would work on the 11/34 and remain 11/40-45 compatible. I guess I will look at locore.s tonight when I get home. That must be the place where such things happen. I wonder what the RT-11 guys did when they had the same problem. I seem to remember something involving creative use of stack pushes and RTI instructions to set the processor priority. carl Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id KAA25390 for pups-liszt; Wed, 31 Jan 2001 10:35:01 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Richard Donkin <rdonkin(a)bigfoot.com> Wed Jan 31 09:33:02 2001 Received: from chalfont.mail.uk.easynet.net (chalfont.mail.uk.easynet.net [195.40.1.44]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id KAA25383 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 10:34:57 +1100 (EST) (envelope-from rdonkin(a)bigfoot.com) Received: from bigfoot.com (dsl-212-135-223-35.dsl.easynet.co.uk [212.135.223.35]) by chalfont.mail.uk.easynet.net (Postfix) with ESMTP id 45018F8357; Tue, 30 Jan 2001 23:32:11 +0000 (GMT) Message-ID: <3A774F2E.46106B82(a)bigfoot.com> Date: Tue, 30 Jan 2001 23:33:02 +0000 From: Richard Donkin <rdonkin(a)bigfoot.com> X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.2.14-15mdk i586) X-Accept-Language: en, fr MIME-Version: 1.0 To: Mark Green <mark(a)cs.ualberta.ca> Cc: PUPS List <pups(a)minnie.cs.adfa.edu.au> Subject: Re: [pups] 2.11 BSD compilation fails References: <20010130160418Z433530-3339+182(a)scapa.cs.ualberta.ca> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Mark Green wrote: > > > > > While tinkering with the date2.c program posted earlier by Alex > > Chupakhin, which now runs on 2.11 BSD btw, I discovered the following: > > > > - 'cc -o date2 date2.c' works fine, producing a 12K binary > > > > - a makefile containing this command fails - the compilation starts but > > fails silently, producing a 2K binary that is not marked executable. > > The makefile is: > > > > date2: date2.c > > cc -o date2 -c date2.c > Remove the -c flag, it tells the compiler to only compile the program > and not produce an executable. Ooops... I must have been up too late when I came up with that one. Thanks Richard Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id MAA26019 for pups-liszt; Wed, 31 Jan 2001 12:46:59 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Bill Gunshannon <bill(a)cs.scranton.edu> Wed Jan 31 11:45:20 2001 Received: from mailhost.cs.uofs.edu (mailhost.cs.uofs.edu [134.198.169.1]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id MAA26015 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 12:46:54 +1100 (EST) (envelope-from bill(a)cs.uofs.edu) Received: from triangle.cs.uofs.edu (IDENT:root@triangle.cs.uofs.edu [134.198.172.101]) by mailhost.cs.uofs.edu (8.9.3/8.9.2) with ESMTP id UAA37178 for <pups(a)minnie.cs.adfa.edu.au>; Tue, 30 Jan 2001 20:45:59 -0500 (EST) Received: from localhost (bill@localhost) by triangle.cs.uofs.edu (8.9.3/8.8.6) with ESMTP id UAA03841 for <pups(a)minnie.cs.adfa.edu.au>; Tue, 30 Jan 2001 20:45:24 -0500 X-Authentication-Warning: triangle.cs.uofs.edu: bill owned process doing -bs Date: Tue, 30 Jan 2001 20:45:20 -0500 (EST) From: Bill Gunshannon <bill(a)cs.scranton.edu> To: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? In-Reply-To: <3A774DFC.8A3260E8(a)tampabay.rr.com> Message-ID: <Pine.LNX.4.10.10101302039390.3188-100000(a)triangle.cs.uofs.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk On Tue, 30 Jan 2001, Ken Wellsch wrote: > Don't forget to type 'date' when logged in ... it is a hoot to see B^) > > Oh heck, never thought to actually try to set the date, post 2000... > maybe better to let it live back in 1975... > I assume it is just like Ultrix-11 was, soooooo Here's a quick way to get the date right until you get a chance to install a fixed "date" command. Yes, it is only the date command that is not Y2K ready. First: Set the date to 9912312359 Second: wait one minute. It is now 1 Jan 2000. Third: Set the date to 12312359 Fourth: wait one minute. It is now 1 Jan 2001. Fifth: Set the month, day, hour and minute to the current time. Voila. Primitive, but it works. I guess I could try building the GNU date command on Ultrix-11 or maybe just get the sources from FreeBSD. All the best. bill -- Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves bill(a)cs.scranton.edu | and a sheep voting on what's for dinner. University of Scranton | Scranton, Pennsylvania | #include <std.disclaimer.h> Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id SAA27811 for pups-liszt; Wed, 31 Jan 2001 18:07:33 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ian King <iking(a)microsoft.com> Wed Jan 31 16:58:53 2001 Received: from mail3.microsoft.com (mail3.microsoft.com [131.107.3.123]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with SMTP id SAA27807 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 18:07:29 +1100 (EST) (envelope-from iking(a)microsoft.com) Received: from 157.54.9.100 by mail3.microsoft.com (InterScan E-Mail VirusWall NT); Tue, 30 Jan 2001 23:03:00 -0800 (Pacific Standard Time) Received: by inet-imc-03.redmond.corp.microsoft.com with Internet Mail Service (5.5.2653.19) id <D0V9B1YG>; Tue, 30 Jan 2001 22:59:19 -0800 Message-ID: <8D25F244B8274141B5D313CA4823F39C018EEB1A(a)red-msg-06.redmond.corp.microsoft.com> From: Ian King <iking(a)microsoft.com> To: "'Carl Lowenstein'" <cdl(a)mpl.ucsd.edu>, wkt(a)cs.adfa.edu.au Cc: pups(a)minnie.cs.adfa.edu.au Subject: RE: [pups] A bootable disk image for a PDP-11/34? Date: Tue, 30 Jan 2001 22:58:53 -0800 X-Mailer: Internet Mail Service (5.5.2653.19) Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Again, I'd be glad to do things like this, if I could get an image to run on an emulator -- that's been a goal. I've tried various 'processors' (in emulation), but not been successful at booting the Unix kernel. Can anyone say, "I booted image X on emulator Y and had a successfully running Unix"? If so, please please please share your experience -- I haven't been able to boot anything out of the PUPS archive on the E11 emulator (held out by some to be the best). And, if/when I have success, I promise to share a field report. :-) -- Ian -----Original Message----- From: Carl Lowenstein [mailto:cdl@mpl.ucsd.edu] Sent: Tuesday, January 30, 2001 3:31 PM To: wkt(a)cs.adfa.edu.au Cc: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? > From wkt(a)henry.cs.adfa.edu.au Tue Jan 30 14:16 PST 2001 > From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au> > Subject: Re: [pups] A bootable disk image for a PDP-11/34? > To: Carl Lowenstein <cdl(a)mpl.ucsd.edu> > Date: Wed, 31 Jan 2001 09:13:30 +1100 (EST) > CC: pups(a)minnie.cs.adfa.edu.au > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > > In article by Carl Lowenstein: > > Just from the historical point of view, note that the first major > > file on a genuine 6th Edition distribution tape _is_ a bootable > > RK05 image. Something like 4000 blocks. > > > > carl > > Yes, but it doesn't boot on an 11/34 :( > That's the problem. > > Cheers, > Warren Why, said he wonderingly. Is the 11/34 one of those machines that does not have a directly addressable PSW at 177776 so it must be done with MPTS and MFPS instructions? Thats all I can think of immediately. Pulling out my handy PDP-11 architecture handbook, I find this to be so. There are some other differences between 11/34 and 11/40-45 but this one would be a real show-stopper. The modifications to 6th Ed. Unix to take care of this would be concentrated in the save/raise/lower processor priority routines. Just offhand I don't think one could make a zero-length binary patch that would work on the 11/34 and remain 11/40-45 compatible. I guess I will look at locore.s tonight when I get home. That must be the place where such things happen. I wonder what the RT-11 guys did when they had the same problem. I seem to remember something involving creative use of stack pushes and RTI instructions to set the processor priority. carl Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id SAA27852 for pups-liszt; Wed, 31 Jan 2001 18:13:33 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ian King <iking(a)microsoft.com> Wed Jan 31 17:05:55 2001 Received: from mail3.microsoft.com (mail3.microsoft.com [131.107.3.123]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with SMTP id SAA27848 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 18:13:30 +1100 (EST) (envelope-from iking(a)microsoft.com) Received: from 157.54.9.100 by mail3.microsoft.com (InterScan E-Mail VirusWall NT); Tue, 30 Jan 2001 23:04:36 -0800 (Pacific Standard Time) Received: by inet-imc-03.redmond.corp.microsoft.com with Internet Mail Service (5.5.2653.19) id <D0V9BGQ8>; Tue, 30 Jan 2001 23:05:48 -0800 Message-ID: <8D25F244B8274141B5D313CA4823F39C018EEB1C(a)red-msg-06.redmond.corp.microsoft.com> From: Ian King <iking(a)microsoft.com> To: "'Ken Wellsch'" <kwellsch(a)tampabay.rr.com> Cc: pups(a)minnie.cs.adfa.edu.au Subject: RE: [pups] A bootable disk image for a PDP-11/34? Date: Tue, 30 Jan 2001 23:05:55 -0800 X-Mailer: Internet Mail Service (5.5.2653.19) Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Ken, if you send it to my personal email account, there's no size restriction (I run the mail server); it's iking(a)killthewabbit.org. I would greatly appreciate your sending it to me. BTW, I've been using 1977 (the year I graduated fron high school) on my PDP-11 under RSX-11; some tools won't accept the "01" year. :-) Cheers -- isk PS: I've hired a lot of Waterloo folks -- smart buggers, the lot of them. :-) -----Original Message----- From: Ken Wellsch [mailto:kwellsch@tampabay.rr.com] Sent: Tuesday, January 30, 2001 3:28 PM To: Ian King Cc: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? Hi Ian, Indeed, looks like there has been some bit rot on the archive... sigh. Luckily I am a pack rat and have copies of my Waterloo days data. The images are all clean there. Curiously enough I even found the directory where I ran that simulation (circa Oct/94 I see). I just rebuilt the code there and ran it on my NetBSD/i386 system and it boots V6 just fine. In case you don't read minds, after doing the 'attach ...' then 'boot rk0' the intuitive V6 boot prompt '@' is where you type 'rkunix' for example B^) Almost instantly I had a 'login:' prompt, and the image is off the tape so there is no root password set... Don't forget to type 'date' when logged in ... it is a hoot to see B^) Oh heck, never thought to actually try to set the date, post 2000... maybe better to let it live back in 1975... I've tar/gzip'ed the bundle. Do you want me to try and UUencode it and mail it to you? It is nearly 1 Mbyte in binary form... Oh yeah, as Warren mentioned, stock V6 does not run on a '34. I think it ran on a '40. I know it can run on a '34 because in 1980 I started using UNIX, V6 running on a '34 B^) Cheers, -- Ken Ian King wrote: > > Ken, I tried using that image and gunzip told me there was a crc error; it > wouldn't unzip it. (I downloaded it three times, just in case there was a > transmission error -- twice by ftp, once by http.) I've also tried the > "Dennis" images, which are supposedly straight RK05 images; E11 won't boot > 'em. One issue on which I'm not clear: where is the boot address? Stuff at > loc 0 doesn't look like boot instructions. > > If I could get an image to run in an emulator (as I mentioned, I'm running > E11 from DBit), I'd write some cheesy little loader to bring it down the > serial line (I already have it sketched out); but until I can at least get > one to boot in the emulator, I'm reluctant to spend the hours (at 9600 baud) > to spray it onto a disk. <sigh> > > Any suggestions you may have would be greatly appreciated. -- Ian Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id AAA29613 for pups-liszt; Thu, 1 Feb 2001 00:21:49 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ken Wellsch [mailto:kwellsch@tampabay.rr.com] Wed Jan 31 23:20:06 2001 Received: from arundel.fortyfour.org (138bus2.tampabay.rr.com [24.94.138.2]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id AAA29604 for <pups(a)minnie.cs.adfa.edu.au>; Thu, 1 Feb 2001 00:21:43 +1100 (EST) (envelope-from kwellsch(a)tampabay.rr.com) Received: from tampabay.rr.com (localhost [127.0.0.1]) by arundel.fortyfour.org (8.11.0/8.11.0) with ESMTP id f0VDK7R00577 for <pups(a)minnie.cs.adfa.edu.au>; Wed, 31 Jan 2001 08:20:07 -0500 (EST) Message-ID: <3A781106.F7302A5A(a)tampabay.rr.com> Date: Wed, 31 Jan 2001 08:20:06 -0500 From: Ken Wellsch <kwellsch(a)tampabay.rr.com> X-Mailer: Mozilla 4.76 [en] (X11; U; NetBSD 1.5.1_ALPHA i386) X-Accept-Language: en MIME-Version: 1.0 To: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? References: <8D25F244B8274141B5D313CA4823F39C018EEB13(a)red-msg-06.redmond.corp.microsoft.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Ian King wrote: > > Ken, I tried using that image and gunzip told me there was a crc error; it > wouldn't unzip it. (I downloaded it three times, just in case there was a > transmission error -- twice by ftp, once by http.) So going over all the things I can easily do data integrity checks on, I've run 'gzip -tv' on all the GZip'ed things and found three that are apparently damaged: gzip: ./PDP-11/Distributions/dec/Ultrix-3.1/ultrix-3.1-bootape.tar.gz: invalid compressed data--crc error gzip: ./PDP-11/Distributions/research/Ken_Wellsch_v6/v6.tape.gz: invalid compressed data--crc error gzip: ./PDP-11/Distributions/unsw/90/record0.gz: invalid compressed data--crc error I can't comment on the *.Z compressed archives as they do not do any crc. I will have to peruse my stack of archive CD's made at various stages of the archive to see if I have the other two (I have a good 'v6.tape.gz' file). I did not try and run the MD5 list yet. But this is an example of why I had been pushing for the use of MD5 for all items in the archive... B^) -- Ken Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id DAA30614 for pups-liszt; Thu, 1 Feb 2001 03:08:48 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Ken Wellsch <kwellsch(a)tampabay.rr.com> Thu Feb 1 02:07:09 2001 Received: from arundel.fortyfour.org (138bus2.tampabay.rr.com [24.94.138.2]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id DAA30610 for <pups(a)minnie.cs.adfa.edu.au>; Thu, 1 Feb 2001 03:08:43 +1100 (EST) (envelope-from kwellsch(a)tampabay.rr.com) Received: from tampabay.rr.com (localhost [127.0.0.1]) by arundel.fortyfour.org (8.11.0/8.11.0) with ESMTP id f0VG79R00768; Wed, 31 Jan 2001 11:07:10 -0500 (EST) Message-ID: <3A78382D.37188B15(a)tampabay.rr.com> Date: Wed, 31 Jan 2001 11:07:09 -0500 From: Ken Wellsch <kwellsch(a)tampabay.rr.com> X-Mailer: Mozilla 4.76 [en] (X11; U; NetBSD 1.5.1_ALPHA i386) X-Accept-Language: en MIME-Version: 1.0 To: Bill Gunshannon <bill(a)cs.scranton.edu> CC: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] A bootable disk image for a PDP-11/34? References: <Pine.LNX.4.10.10101302039390.3188-100000(a)triangle.cs.uofs.edu> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Bill Gunshannon wrote: > > On Tue, 30 Jan 2001, Ken Wellsch wrote: > > > Don't forget to type 'date' when logged in ... it is a hoot to see B^) > > > > Oh heck, never thought to actually try to set the date, post 2000... > > maybe better to let it live back in 1975... > > I assume it is just like Ultrix-11 was, soooooo > Here's a quick way to get the date right until you get a chance to > install a fixed "date" command. Yes, it is only the date command > that is not Y2K ready. No, V6 predates Ultrix-11 by just a bit I believe. The date setting format on V6 appears to be '1231245999', that is two digits for: month, day, hour, minute, year. A trailing 'p' means the hours are 12 based (and it is PM), otherwise 24 based. I can confirm as I expected that setting 0131110301 puts me at 1970 B^) No big deal. I can see in the 'date' source what it is doing... Thanks for the 'put it into the year 2001' method! -- Ken

24 years, 3 months

[pups] Help! Standalone DZ-11 driver

by Warren Toomey

Hi all, I'm working on a new version of my Vtserver, which allows a PDP-11 with no tape drive to boot from a Unix/Linux server (via serial cable) and install a UNIX. See ftp://minnie.cs.adfa.edu.au/pub/PDP-11/Vtserver At present I'm working on a new version which uses the 2.11BSD boot code so as to support more disk drives. The work in progress is at: http://minnie.cs.adfa.edu.au/Vtserver. At present it's not usable unless you have a PDP-11/45. I've got a potential user with an 11/34, two RK05s and a DZ-11. I can't find any details of DZ-11 here in my peripherals handbooks, and the 2.11 kernel drivers are a bit too complicated to read. My existing KL-11 driver is below. Can someone come up with a standalone equivalent for a DZ-11, or point me at some docs? I'll be away from 1st to 14th Feb, so there may be some delays in responding. Thanks all, Warren struct vtdevice { int rcsr,rbuf; int tcsr,tbuf; }; #define NVT 2 struct vtdevice *VTcsr[NVT + 1] = { (struct vtdevice *)0176500, /* We use VTcsr[0] unit 1 */ (struct vtdevice *)0, (struct vtdevice *)-1 }; /* Get a character, or timeout and return with hitim zero */ char vtgetc() { register c; VTcsr[0]->rcsr = 1; hitim=3; lotim=65535; while ((VTcsr[0]->rcsr&0200)==0) { lotim--; if (lotim==0) hitim--; if (hitim==0) { putchar('t'); return(0); } } c = VTcsr[0]->rbuf; return(c); } vtputc(c) register c; { register s; while((VTcsr[0]->tcsr&0200) == 0) ; s = VTcsr[0]->tcsr; VTcsr[0]->tcsr = 0; VTcsr[0]->tbuf = c; VTcsr[0]->tcsr = s; } Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id BAA15283 for pups-liszt; Tue, 30 Jan 2001 01:14:40 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From Robin Birch <robin(a)ruffnready.co.uk> Tue Jan 30 00:11:33 2001 Received: from finch-post-10.mail.demon.net (finch-post-10.mail.demon.net [194.217.242.38]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id BAA15279 for <pups(a)minnie.cs.adfa.edu.au>; Tue, 30 Jan 2001 01:14:36 +1100 (EST) (envelope-from robin(a)ruffnready.co.uk) Received: from falstaf.demon.co.uk ([158.152.152.109]) by finch-post-10.mail.demon.net with esmtp (Exim 2.12 #1) id 14NF3N-0006Ms-0A; Mon, 29 Jan 2001 14:13:10 +0000 Message-ID: <RQsFELAVoXd6EwKY(a)ruffnready.co.uk> Date: Mon, 29 Jan 2001 14:11:33 +0000 To: wkt(a)cs.adfa.edu.au Cc: PDP-11 Unix Preservation Society <pups(a)minnie.cs.adfa.edu.au> From: Robin Birch <robin(a)ruffnready.co.uk> Subject: Re: [pups] Help! Standalone DZ-11 driver References: <200101290124.f0T1Ois26299(a)henry.cs.adfa.edu.au> In-Reply-To: <200101290124.f0T1Ois26299(a)henry.cs.adfa.edu.au> MIME-Version: 1.0 X-Mailer: Turnpike Integrated Version 5.00 U <YSkKJATYm0AxAbv6xwlBrCeVCW> Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Warren, Why not do this as a terminal emulator that can switch into emulating a tape drive by some start/stop messaging using the console device. You could upload a simple bootstrap using ODT that could then read a more complex boot driver in. If you use the console then that shoud be universal across all PDP11s. Robin In message <200101290124.f0T1Ois26299(a)henry.cs.adfa.edu.au>, Warren Toomey <wkt(a)henry.cs.adfa.edu.au> writes >Hi all, > I'm working on a new version of my Vtserver, which allows a PDP-11 >with no tape drive to boot from a Unix/Linux server (via serial cable) and >install a UNIX. See ftp://minnie.cs.adfa.edu.au/pub/PDP-11/Vtserver > >At present I'm working on a new version which uses the 2.11BSD boot code >so as to support more disk drives. The work in progress is at: >http://minnie.cs.adfa.edu.au/Vtserver. At present it's not usable >unless you have a PDP-11/45. > >I've got a potential user with an 11/34, two RK05s and a DZ-11. I can't >find any details of DZ-11 here in my peripherals handbooks, and the 2.11 >kernel drivers are a bit too complicated to read. > >My existing KL-11 driver is below. Can someone come up with a standalone >equivalent for a DZ-11, or point me at some docs? > >I'll be away from 1st to 14th Feb, so there may be some delays in >responding. > >Thanks all, > Warren > > >struct vtdevice { > int rcsr,rbuf; > int tcsr,tbuf; >}; > >#define NVT 2 >struct vtdevice *VTcsr[NVT + 1] = { > (struct vtdevice *)0176500, /* We use VTcsr[0] unit 1 */ > (struct vtdevice *)0, > (struct vtdevice *)-1 >}; > >/* Get a character, or timeout and return with hitim zero */ >char vtgetc() >{ > register c; > > VTcsr[0]->rcsr = 1; hitim=3; lotim=65535; > > while ((VTcsr[0]->rcsr&0200)==0) { > lotim--; > if (lotim==0) hitim--; > if (hitim==0) { putchar('t'); return(0); } > } > c = VTcsr[0]->rbuf; return(c); >} > >vtputc(c) >register c; >{ > register s; > > while((VTcsr[0]->tcsr&0200) == 0) ; > s = VTcsr[0]->tcsr; > VTcsr[0]->tcsr = 0; VTcsr[0]->tbuf = c; VTcsr[0]->tcsr = s; >} ____________________________________________________________________ Robin Birch robin(a)ruffnready.co.uk M1ASU/2E0ARJ/M5ABD Old computers and radios always welcome

24 years, 3 months

[pups] Re: Ultrix-11 Latest News

by bill＠cs.scranton.edu

[This is a courtesy copy of a message which was also posted to the newsgroup(s) shown in the header.] In article <944vup$3e6$1(a)news.IAEhv.nl>, "Hans Vlems" <hvlems(a)iae.nl> writes: |> Bill, |> |> tried to telnet but no joy |> |> Bill Gunshannon heeft geschreven in bericht |> <944t6p$1o3d$1(a)info.cs.uofs.edu>... |> >Ok, here it is. An 11/23+ running Ultrix-11 3.1, available on the |> >Net. |> > |> >telnet to 134.198.175.226 |> >login as guest |> >password is ultrix11 Well, the bad news it it appears I forgot that at one time no the distnat past TTL was set to some very low number. If you are more than a couple hops away from the University of Scranton you won't be able to get in yet. However, good news on two fronts. I have put up the sources and if I have the time I will try to find the offending bit this weekend. (Anybody who remembers fixing this in any Ultrix-11 or Ultrix-32 when it happened originaly feel free to save me the trouble of searching through the source.) the other good news is I may be acquiring an 11/93 shortly. If I do and it actually still works (one never knows inthese acquisitions) I will probably be putting Ultrix-11 on it and building a Split I&D system. That will then become the system I will put on the Net to play with. Hsve a nice weekend, all. bill -- Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves bill(a)cs.scranton.edu | and a sheep voting on what's for dinner. University of Scranton | Scranton, Pennsylvania | #include <std.disclaimer.h>

24 years, 3 months

[pups] Ultrix-11 Latest News

by Bill Gunshannon

It was pointed out to me that I was remiss in not making this announcement here as well as on USENET. Mea culpa, mea culpa. ------- Ok, here it is. An 11/23+ running Ultrix-11 3.1, available on the Net. telnet to 134.198.175.226 login as guest password is ultrix11 Don't expect much. As I said, it's only an 11/23+. It has 3M of memory and an RA81 disk. Things like ftp "run", but they don't "work". Look to be lack of buffer space, but without any documentation I have not found out how to tune it any more than it is now. Of course, if I ever get an 11/73 running I could build a split I&D system which should be considerably better. Please don't try to crash it. It is likely to do that all by itself anyway and you would just keep others from trying it out. No, it's not running any critical applications. If you want to move some code over to try the compiler or something, try "gkermit". But remember, it won;t stream and it needs real small packets. I await any comments and am still hoping someone will find a box of Ultrix-11 docs sitting in a closet somewhere that I will gladly pay to ship here. All the best. bill -- Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves bill(a)cs.scranton.edu | and a sheep voting on what's for dinner. University of Scranton | Scranton, Pennsylvania | #include <std.disclaimer.h>

24 years, 3 months

[pups] Stupid question..

by Martijn van Buul

Hey. I'm playing around with a /53 running 2.11BSD, trying to port some software, and I have a (probably stupid) problem: environ. When I write a simple program like #include <stdio.h> extern char **environ; void main(argc, argv) int argc; char **argv; { printf("Hello world!"); environ=environ; } and compile & link it using cc ("cc -o test test.c"), things go fine, however if I link things manually ("cc -c test.c ; ld -o test test.o -lc") I get an unresolved _environ. By some experimentation, I noticed that including /lib/crt0.o in the linker helps to some extent - however, the binary generated by cc works like a charm, while the manually linked version quits with a bus error. Any ideas? -- Martijn van Buul - Pino(a)dohd.org - http://www.stack.nl/~martijnb/ Geek code: G-- - Visit OuterSpace: mud.stack.nl 3333 Kees J. Bot: The sum of CPU power and user brain power is a constant. Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) id JAA08435 for pups-liszt; Tue, 16 Jan 2001 09:22:57 +1100 (EST) (envelope-from owner-pups(a)minnie.cs.adfa.edu.au) >From "Steven M. Schultz" <sms(a)moe.2bsd.com> Tue Jan 16 08:15:45 2001 Received: from henry.cs.adfa.edu.au (henry.cs.adfa.edu.au [131.236.21.158]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id JAA08430 for <pups(a)minnie.cs.adfa.edu.au>; Tue, 16 Jan 2001 09:22:55 +1100 (EST) (envelope-from wkt(a)henry.cs.adfa.edu.au) Received: (from wkt@localhost) by henry.cs.adfa.edu.au (8.11.1/8.9.3) id f0FMTm309828 for pups(a)minnie.cs.adfa.edu.au; Tue, 16 Jan 2001 09:29:48 +1100 (EST) (envelope-from wkt) Received: from moe.2bsd.com (MOE.2BSD.COM [206.139.202.200]) by minnie.cs.adfa.edu.au (8.9.3/8.9.3) with ESMTP id JAA08355 for <pups(a)minnie.cs.adfa.edu.au>; Tue, 16 Jan 2001 09:17:00 +1100 (EST) (envelope-from sms(a)moe.2bsd.com) Received: (from sms@localhost) by moe.2bsd.com (8.10.1/8.10.1) id f0FMFjJ26746 for pups(a)minnie.cs.adfa.edu.au; Mon, 15 Jan 2001 14:15:45 -0800 (PST) Date: Mon, 15 Jan 2001 14:15:45 -0800 (PST) From: "Steven M. Schultz" <sms(a)moe.2bsd.com> Message-Id: <200101152215.f0FMFjJ26746(a)moe.2bsd.com> To: pups(a)minnie.cs.adfa.edu.au Subject: Re: [pups] Stupid question.. Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Hi - > From: Martijn van Buul <pino(a)dohd.org> > > however if I link things manually ("cc -c test.c ; ld -o test test.o -lc") > I get an unresolved _environ. By some experimentation, I noticed that > including /lib/crt0.o in the linker helps to some extent - however, > the binary generated by cc works like a charm, while the manually > linked version quits with a bus error. Any ideas? Try placing /lib/crt0.o before the test.o: ld -o test /lib/crt0.o test.o -lc on another note it's usually not a good idea to call a program 'test' because when you are least expecting it you will end up running /bin/test and wonder what is wrong. Steven

24 years, 3 months

[pups] RL0{1,2} platters available in Portland, OR

by Aaron J. Grier

my company was recently doing some housecleaning and unearthed about a dozen RL01 and RL02 platters, along with a bunch of 8" RT-11 floppies, and doc set for RT-11. seeing that used platters seem to still be rather common, I'm sure I can talk accounting into letting them go for the price of shipping. Likewise with the floppies and documentation. (of course Portland people can pick up for free, or if you're in SE PDX, I can deliver!) We have the original DEC packaging for many of the platters, and can ship worldwide via UPS, DHL, etc... I guess to bring things back on topic a little, what's the background / specs of the RL-series drives? I know they're 5 and 10MB, but that's about it. What interface boards were available for the various PDPs and VAXen? How fast(?)/reliable/cranky were these things? :) -- Aaron J. Grier | "Not your ordinary poofy goof." | agrier(a)poofygoof.com "[I]f you can find the purity in hardcore and gabber, I guess you're already screwed up enough." -- Drew Smith

24 years, 3 months

[pups] Dead period on tuhs, pups lists

by Warren Toomey

All, I'm just off for a 4-day break, so messages for the tuhs and pups mailing lists will be queued until I get back. Hope you all have a safe and happy festive time! Cheers, Warren

24 years, 4 months

[pups] A new list member seeking help.

by Bill Gunshannon

Although some here may recognize me from the PDP-11 newsgroups, I am a new member of the mailing list. And I come with a problem right off the bat!! Is there anyone here who can give me hand figuring out how to get more than 1M of memory working on an 11/23+ and an 11/73?? This has me pulling my hair out!! I have a couple of M7551 4M modules but can't seem to make them work beyond setting them for 1M. I have Ultrix-11 3.1 running (even with TCPIP!) and really would like to get more memory so I can make them functional rather than just running. Is there anyone here who can offer any help. And as long as I have everyones attention, anyone here who knows anything about the H777 power supply in the 11/24?? I've got a dead one and I really miss my only UNIBUS machine. Come to think of it, it would run ULTRIX-11 pretty good as well if I could revive it. Any help greatly appreciated. bill -- Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves bill(a)cs.scranton.edu | and a sheep voting on what's for dinner. University of Scranton | Scranton, Pennsylvania | #include <std.disclaimer.h>

24 years, 4 months

[pups] BSD2.11 Floating Point Simulator

by Robin Birch

Dear All, I am currently looking at making the 2.11 FP simulator work. Unfortunately I don't have a non floating point PDP to check things on. Can some one who has please try running some FP code on the Generic Kernel for 2.11 and let me know what happens. I am slowly going through the code but some symptoms would be useful. regards Robin ____________________________________________________________________ Robin Birch robin(a)ruffnready.co.uk M1ASU/2E0ARJ/M5ABD Old computers and radios always welcome

24 years, 6 months

[pups] 9 track reelers on MVII.... will an IBM differential drive work?

by rdkeys＠unity.ncsu.edu

On a lark, my ol' propeller headed beanie was whirring, again, today. Problem: how to use old IBM differential scsi reel tape deck to make reel tapes for antique unix.... Discussion: I picked up a perfectly fine looking IBM 9348-001 differential scsi interface tape deck from an AS400 box. I had thought of using a differential to single-ended scsi converter, but, they are a tad dear for this olde man's beer bellie peanut computer budget. Thinking there had to be some other way of making use of this deck to write some fine old reels, I saw, buried deep in the pdp-11 cards list a differential tape card by Dilogic, and though... hmmm, can the old MVII crank out to the 9 track via such a card? Solutions: anyone have any insights on trying something like this or know if such a shennanigan will work? Are there any other such differential scsi cards available that might work? Anyone got such a critter gathering dust? Is this really a scsi card or is it some other interface? Thanks Bob

24 years, 6 months

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