test-drb

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101090 discussions

by jnc＠mercury.lcs.mit.edu

Not my thing (I'm into earlier stuff): https://www.ebay.com/itm/392212420626? but I thought I'd post it since it's filed in an unusual place. Noel

7 years, 7 months

warped RK05 pack -- lost cause?

by jnc＠mercury.lcs.mit.edu

> From: Fritz Mueller fritzm at fritzm.org > I'm assuming that if I had to release the media from the hub in order > to true it, its value as an alignment cartridge would be lost anyway. Yes and no.... The RK05 alignment pack is mostly to make sure that the fine lateral track adjustment is correct (i.e. that when the head thinks it's over track 0, it's _really_ over track 0). However, there's also rotational alignment (i.e. start of sector), which is done with the slits in the ring on the pack (so yes, releasing the media from the hub in an ordinary pack will make that pack unreadable - at least until it's reformatted). There is an index/sector timing adjustment procedure, and it uses the alignment pack too, but this rarely needs to be done. Still, if the platter is on wrong, the whole thing's useless anyway. So as long as the platter goes back exactly concentric (and I'm unsure of how the mechanical alignment works, there may be something to assure there's no runout), it should still be usable for the head alignment. (To use it for sector alignment, you'd have to ensure that the drive is aligned for this before-hand, then use it to align the pack.) But check the RK05 Maintenance Manual (EK-RK5JF-MM-001), and see if there's anything I missed. There's also an 'RK05 Subsystem Maintence Course' document (EY-D2055-WB-001) which might contain some useful info. Off to look at the V6 MMU setup code! ;-) Noel

7 years, 7 months

OT RE: Bogus "account hacked" message

by jwest＠classiccmp.org

-----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of John Foust via cctalk Sent: Wednesday, January 09, 2019 6:33 AM To: cctalk at classiccmp.org Subject: Re: Bogus "account hacked" message At 08:56 PM 1/8/2019, Jon Elson via cctalk wrote: >I currently have 9000-some blocked IPs in hosts.deny, I wonder how much that slows down my store. Ugh, the stuff we are forced to go through. Now you've increased your chances by 9000x that someday someone will complain that they can't reach your site. You said "botnet" right? - John

7 years, 7 months

Documentation for Xebec Owl (a 1984 SASI-disk-drive)

by martin＠shackspace.de

Anyone here, owning a Xebec Owl and/or its documentation? The Owl is a SASI-disk-drive from 1984. One could say that it's mostly a Xebec S1410A mounted on a drive, thus eliminating the ST-506-interface. The one I had my hands on seems to be a late version, called the Owl II (20MB instead of 10MB). It shiped with a PC-SASI-controller for the 8-bit-ISA-bus (TTL) and 4KB Boot-ROM (in a 2764-EPROM). The firmware of the Owl II itself seems to be more advanced and bigger than that of the well-known Xebec-bridge-boards: The Owl has 16KB (27128) of firmware, compared to the 4/8KB (2732/64) of a S1410/10A/20. A lot of its commands are explained in the documentation of the S1420 controller, but it seems there are some commands missing, e.g. the command 0x0C. The drive is not compatible with later SCSI equippment. The owner reported, he did not manage to run it with a "modern" PC-SCSI-Controller and I'm not surprised about this: Some commands and codes are incompatible to SCSI/CCS, so the SENSE codes. There is also a command collision with the INQUIRY command, uhhhh :( Does someone own the/some/any documentation for the Owl? It doesn't seem there's much more out there than this brochure: http://www.bitsavers.org/pdf/xebec/brochures/Xebec_Owl_Datasheet_198410xx.p… --map

7 years, 7 months

Bogus "account hacked" message

by seefriek＠gmail.com

FWIW, I use a password manager (Keepass/Keepass2, tho there are other good ones). It's another step or two in my workflow, but let's me have a unique, very strong password for everything I log into. Greatly reduces the impact of password dump attacks.

7 years, 7 months

IBM APL/PC unofficial patch for memory >512KB

by bear＠typewritten.org

IBM's APL/PC v1.0 crashes if you try to run it on a PC with more than 512 KB RAM. I learned today that there was a patch published to make it work on systems with 640 KB. Of course, I can't seem to find any trace of it. Anyone save a copy or know where it might be found today? ok bear. -- until further notice

7 years, 7 months

RL02 packs FTGH in 01057

by wilson＠dbit.com

So I'm consolidating my storage and finding I have a lot of surplus stuff. For starters, I have a few too many RL02K-DCs (also a few RL01K-DCs and a couple of 12-sector RK05 packs): http://www.dbit.com/wilson/RL02K-DC.jpg Believed to be good/usable but of course I guarantee nothing. YMMV. YHMC. Located in Monson, MA, 01057, USA. I'll drive anywhere in southern New England to deliver some / a few / all of them, for free. Anything more complicated is OK, at your expense. John Wilson D Bit

7 years, 7 months

Microcode, which is a no-go for modern designs

by technoid6502＠gmail.com

On Sat, 2019-01-05 at 12:00 -0600, cctalk-request at classiccmp.org wrote: > Re: Microcode, which is a no-go for modern designs I was a tech in the 90's when the original Pentium FDIV bug was storming. The issue was confined to the integrated floating point portion of the processor and was therefore rarely an issue as the vast majority of software did not use the mathco portion of the chip. Only a handful of applications and relative handful of users were affected. This became Intel's position on the matter and they hoped the issue would just die down to those handful whom they would provide new chips. The issue did not die down and the bad press forced the decision to replace ALL pentiums affected. Only a relative few were actually replaced in the home and small business arena. A software patch was a common solution to the problem. It masssaged input to the FDIV instruction to produce a corrected result and worked pretty well as I recall. At the time of the storm, the Pentium was still pretty new and very expensive. Most folks were getting along with AMD k5 and k6 processors. I WAS. I went from k6 to Celeron. Best Jeff

7 years, 7 months

Old HP stuff

by sales＠elecplus.com

Thanks for all the replies! Based on the responses I got, this is the specific request list that I just emailed him: anything HP 1000 related is interesting. HP 2100, HP 21MX 2113 2117, A-Series A400 A600 A700 A900 A990, etc. are all 21MX/2100-series: HP 12908A Writable Control Store Interface Kit (PCA 12908-60002) HP 12908B Writable Control Store Interface Kit (PCA 12908-60006) HP 12908-60003 Jumper Board Assembly HP 12908-60005 Backplane Jumper Assembly HP 12908-60008 Jumper Board Assembly HP 12978A Writable Control Store (PCA 12978-60006) HP 12978-60006 Jumper Cable Assembly HP 02100-60018 Cable Assembly (need two!) HP 02100-60052 Connector Assembly an HP HIL mouse (so not PS/2), preferably 3-button HP apollo 735/125 power supply part # 0950-2081 (Astec). It comes from a workstation, A2608A or A2841A HP 9000, whether it's the /200, /300, /400, /700, or /800 series The prices I see for this equipment online are stiff! May I assume (and yes, I know what that spells) that you guys are looking for machines in the sub $200 class, not $2000 like some sites have posted? Equipment from the recycler is so much cheaper, but strictly as-is. Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

7 years, 7 months

cctalk Digest, Vol 52, Issue 9

by fred＠MISER.MISERNET.NET

On Wed, 9 Jan 2019 cctalk-request at classiccmp.org wrote: > Message: 7 > Date: Tue, 08 Jan 2019 20:03:24 +0000 (WET) > From: Peter Coghlan <cctalk at beyondthepale.ie> > Subject: Bogus "account hacked" message > > About two hours ago, I received an email to the address I only use for > cctech/cctalk. > > It claimed my email account had been hacked and threatened all sorts of > dire consequences if I didn't deposit $1000 in bitcoins in some place within > 48 hours. [chop] I enjoyed reading the discussion regarding these bogus emails. I get a one or two per week. Some with no password, and some with a password only used for one particular site with an email address only created for that site. (and the site is no longer around more than likely due to being hacked ... essentially the account I had there was a throwaway). Some of the phishers are getting "smarter" and dropping the "-suffix" I used for the email (which also ends up getting to me ...) Obviously the system(s) they send it to don't have a camera, don't have any web browsing software installed, are text based (Linux and OpenVMS) and I just laugh. However, I do enjoy totally confusing the scammers. I have the extra password configured for the SYSTEM account on my main VMS box. The script kiddies have no idea what to do with a second password prompt (since you don't get a User Authorization Failure until you enter both passwords, good, bad, or indifferent). 34630 failures since last successful login No intrusion records either, as they try once and move on. Long passwords are looooong so I challenge them to guess. If they get in, login DCL does checks and if you don't have the secret sauce ... *plonk* I probably don't have to have extra password set, but I'm paranoid and do it anyway. I've also noticed folks at $work are starting to get these "give me bitcoins because I saw your pr0n" messages as well. Those were some fun discussions. Fred

7 years, 7 months

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