test-drb January 2008

test-drb@ccmp.vtda.org

221 participants
430 discussions

by ethan.dicks＠usap.gov

Hi, all, I've been collecting various classic bits to work on over the winter, including a pre-CTRC 32K PET board (2001-N/3032) and a Static PET board. I don't have any cases or accessories, but I do have a C2N232, a single bare keyboard, and a C=Key converter enroute. For video, I was planning on trying that ancient XOR circuit to make composite video >from sync and video, and feed that to an old Panasonic mono CRT I saved >from scrap. What I'm lacking at this point is a power supply. Obviously, I'm unlikely to find a suitable mains transformer, so I was going to cobble up some form of switcher that puts out enough of the right voltages to make this all work. Poring over the schematics for the 2001-N board on zimmers.net (e.g. 320349-9.gif), I'm guessing that the onboard regulator circuit is pumping out +5VDC at over 5A, +12VDC at a couple of amps, and a miniscule amount of -5VDC. I'm not running a real tape drive, so I'm not as worried about the +9VDC unreg. Does anyone have any reasonable estimates or real-world measurements for the current draw on the various supply lines? Has anyone out there ever gotten a PET to run from externally regulated DC? Thanks, -ethan -- Ethan Dicks, A-333-S Current South Pole Weather at 12-Jan-2008 at 23:30 Z South Pole Station PSC 468 Box 400 Temp -13.9 F (-25.5 C) Windchill -32.7 F (-36.0 C) APO AP 96598 Wind 8.3 kts Grid 23 Barometer 686.2 mb (10395 ft) Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html

18 years, 1 month

Backing up VMS

by ajp166＠bellatlantic.net

> >Subject: RE: Backing up VMS > From: "Antonio Carlini" <arcarlini at iee.org> > Date: Mon, 14 Jan 2008 18:40:27 +0000 > To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> > >Dave Dunfield wrote: > >> Fortunately the 4mm drive seems to be OK - I wrote a backup tape > >Have you managed to restore one yet :-) > >My experience of DAT is that after a (short) while they start >to chew tapes. Never had that with DLT: the drive may >break but the tape (for me at least) remains intact. Same here. Though I have some TLZ04s that seem to behave well. >Mind you, I have working RD53s and TK50s so there may be something >in the water here :-) Same here but I got the RD53s as "bad" and opened and fixed them. I also ahve TK50s (on sleds) and the boxed TK50 in both the DEC sorta scsi flavor. >>The good news is that BACKUP/IMAGE from one SCSI drive to >> another worked fine > >That's by design rather than luck ... BACKUP/IMAGE is supposed >to do that. If you BACKUP/IMAGE to a saveset instead, then >you'll have a single file that you can FTP somewhere else >for archiving. > >Given that 18GB SCSI disks are cheap (== free, usually) and >readily available, I would hook one of those up, initialise it, Back when 1GB drives were free and easily found I got a bunch along with a stack of RZ55s and 56s (with BA42 storage boxen). so that was the simplest and fastest solution for my systems with SCSI (all of the 3100s and one BA123 uVAXII). The others (BA23 uVAX and uVAX2000s) I use RD53s and 54s for that. Allison

18 years, 1 month

Free PowerMac in SE England

by lproven＠gmail.com

Would anyone like a free PowerPC Macintosh? An acquaintance of mine has one he wants to get rid of. It's a PowerMac 7200/90. Spec unknown, I'm afraid, but it'll be running MacOS 8 or 9 or so. I believe these machines can be coaxed into running OS X up to 10.4 with XPostFacto, although you'll need to stick to at most 10.1 or 10.2 unless you put a G3 upgrade in it. Either way it will need more RAM and hard disk space to run OS X. It's just outside Brighton. The owner is James Fryer, jim at cix dot co dot uk. -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

18 years, 1 month

Tandy! Pocket! Mania! updated

by spectre＠floodgap.com

I've updated Tandy! Pocket! Mania!, my small page on the Tandy Pocket Computers, with more detailed history and some improved photography. This covers exclusively the Tandy-based Sharp and Casio units, with a little bit of background on the originals to avoid it being a total TRS palimpsest. Comments and corrections always gratefully accepted. http://www.floodgap.com/retrobits/tpm/ -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com -- When you don't know what you're doing, do it neatly. -----------------------

18 years, 1 month

DEC Keyboard Mouse Emulator (was RE: Backing up VAX/VMS?)

by ajp166＠bellatlantic.net

> >Subject: Re: DEC Keyboard Mouse Emulator (was RE: Backing up VAX/VMS?) > From: Jim Brain <brain at jbrain.com> > Date: Mon, 14 Jan 2008 02:20:14 -0600 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > Cc: cctech at classiccmp.org > >Allison wrote: >> Save for theres nothing I can find at the site of anything for that. >> It appears thats a "proposed" project. I checked SourceForge and >> didn't find any code there. >> >As someone else noted, it's buried in CVS. But, it looks like it is done: > >http://kbdbabel.cvs.sourceforge.net/kbdbabel/kbdbabel/kbdbabel-lk-ps2/kbdba… > >from: >http://kbdbabel.cvs.sourceforge.net/kbdbabel/kbdbabel/kbdbabel-lk-ps2/ > >If this doesn't fit the bill, I am sure some of us can whip up something >that works. Found it, now what tool is used to display the .SCH file in useable form. The code looks good and a 8051 is plenty enough to do the task as the DEC keyboards used 8051. Allison

18 years, 1 month

Old "Potter Instrument Co" tape drive available

by will_kranz＠softhome.net

I am looking for a home for a monster tape drive: http://www.fpns.net/willy/forsale/TAPEDRV.HTM Hope this isn't too off topic. Is it worth perserving? I don't have the interest, nor space. Anyone interested, esp a club should get in touch, its heading towards the dumpster. Will

18 years, 1 month

Backing up VMS

by compoobah＠valleyimplants.com

On Jan 13, 2008, at 1:05 AM, Dave Dunfield wrote: > >>> My immediate concern is that I'd like to make a full backup >>> of the VMS 5.5 on the VLC, and also attempt restoring it to >>> another drive. > >> The VLC is simply SCSI based, isn't it? I wouldn't bother with >> doing a >> file-based backup, just because the SCSI drive will probably be >> "quite >> small" compared to today's drives. Just attach it to some other box >> and do a block-copy of the whole drive. That'll create a file of eg. >> 4GB in size with everything in it, including partitioning and all the >> file system(s). Simple to create, simple to restore to this or an >> identical drive. > > I've already done that - I put the drive from the VLC as an external > drive on the 3100 running NETBSD and dd'd it into an image file - but > my goal is to be able to survive a drive failure, and possibly also > move it to a larger drive. The original drive in question is an RZ23, > which is a 100M DEC labled Conner drive - I have three other similar > drives, two labled RZ23 and one Conner that are "really close" but > not exactly the same - apparently there were slightly different > variations and versions. > >> You'd probably do a file-based backup additionally to be able to >> restore to a different medium, though. > > Exactly. If I understand it correctly, an image backup should restore > to any drive, and is the best way to insure that I can rebuild the > system in the future. Why not write out a BACKUP tape with standalone BACKUP at the front so you can do a restore install? Only read about it being done on TKxx/TZxx drives, but it would be worth looking into, as it is the "official" DEC way to build a restorable backup (and is how they shipped the VMS tape distros) (haven't read too much about it because I don't have any CompacTape media right now).

18 years, 1 month

Gridcase 1520

by bill.whitmer＠itt.com

Hello, If you know where or from whom we may purchase at least four fully functional Gridcase 1520 or 1530 laptops please advise. Bill Whitmer ITT Corp A/CD Depot 1460 Garden of the Gods Road Colorado Springs Colorado USA 80907 bill.whitmer at itt.com<mailto:bill.whitmer at itt.com> 719/594-5032 ________________________________ This e-mail and any files transmitted with it may be proprietary and are intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Corporation. The recipient should check this e-mail and any attachments for the presence of viruses. ITT accepts no liability for any damage caused by any virus transmitted by this e-mail.

18 years, 1 month

PDP-11/24 available in Georgia

by quapla＠xs4all.nl

I got this email from Cole Petersburg (cpetersbur3 at gatech.edu). He has an 11/24 availabe, please contact him directly if interested. Information I got : +++++++ PDP-11/24, cosmetic damage to knob, 3U height, 19" rack RX02 dual 8" floppy drive "Computer interface unit" HP monitor Keyboard All cables, former positions are written down Little or no documentation Floppy disks, few or no useful ones Solid state relay - possibly belonging to the computer interface unit Provenance: It came from a PHI-600 Scanning Auger system, purchased around 1986. It ran RT-11, captured images, and printed them to a Tektronix printer. The printer was left with the previous owner. The PDP will be replaced with a PCI card from RBD Instruments. Current owner: I'll need to discuss transfer of ownership with my advisor at Georgia Institute of Technology. ++++++

18 years, 1 month

DEC Keyboard Mouse Emulator (was RE: Backing up VAX/VMS?)

by ajp166＠bellatlantic.net

> >Subject: Re: DEC Keyboard Mouse Emulator (was RE: Backing up VAX/VMS?) > From: Jim Brain <brain at jbrain.com> > Date: Sun, 13 Jan 2008 14:22:49 -0600 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Bob Armstrong wrote: >> >>> I found details of the keyboard and mouse protocol in the back of >>> a Microvax manual, and have been toying with the idea of building >>> a small embedded controller to take a PC (PS2) keyboard and mouse, >>> and emulate the DEC equivalents to the VAX - would anyone else be >>> interested in this? >>> >> >> I'd be very interested, not because I have a shortage of DEC keyboards or >> mice, but because it'd allow me to use my VAXstation or PRO-380 on a KVM >> switch along with various PCs. The KVM switch can handle the video, but it >> can't cope with the DEC keyboards and mice. >> >> I suspect that this may not be as easy as you think, but if you're serious >> I'll build the hardware if you write the firmware. >> >Would this work help in any way: > >http://www.kbdbabel.org/ > >"PS2 Keyboard ---> DEC VT320 ..." Save for theres nothing I can find at the site of anything for that. It appears thats a "proposed" project. I checked SourceForge and didn't find any code there. Briefly: PS2 keyboard do a scan code and send it serially with a sperate clock line. They also use the same serial path to recieve data. DEC keyboards also use a serial path save for it's RS423 and at 4800 baud RS423. The format of the data is different (not scancode!). Here is a site that has the basic LK201 data: http://www.netbsd.org/docs/Hardware/Machines/DEC/lk201.html#electrical To go from PS2 to DEC one must both reconcile the different codings and how data is transmitted. I'd say PS2 to DEC is easiest direction as the PS2 scan codes are known and can be translated to anything. I believe the DEC keyboard uses a simpler code that is one byte for keydown and another for keyup. Allison > >Jim

18 years, 1 month

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test-drb January 2008