test-drb February 2007

test-drb@ccmp.vtda.org

208 participants
390 discussions

Measuring CPU speeds ( was RE: Why isn't Apple releasing patches for the Month of Apple )

by aliensrcooluk＠yahoo.co.uk

--- arcarlini at iee.org wrote: > Tony Duell wrote: > > > However, 'What is an instruction?'. I've heard i t > said that the 11/780 > > averaged 500,000 of its machine instructions per > second, but that that > > was about as much processing as 10^6 of other > machine's instructions > > The VAX-11/780 cranked out about as many Dhrystone s > as an > IBM System/370 158 which did (apparently) chew > through about > one million instructions per second. > **>> snip <<** > Antonio > Speaking of Dhrystones.... what is one? Also, what does the MHz, or GHz, measure exactly? I understand MIPS (Million Instructions Per Second), FLOPS (Floating-point Operations Per Second) and G-FLOPS (Giga-FLOPS) but the aforementioned two are a mystery to me. Regards, Andrew D. Burton aliensrcooluk at yahoo.co.uk

19 years

Thank you, list!

by mouse＠Rodents.Montreal.QC.CA

Just a thank-you to the list. I accidentally broke the top to a very nice filing box I've been using for years (it was designed for floppies, I think, but I now use it for paper - 8" floppies, I suspect, since an 8?" paper sheet just barely fits). Turns out acetone dissolves the plastic, and I was able to solvent-weld the pieces back together with acetone. I let it dry over the weekend and now it is all good. But I never would have thought to try that without all the discussions of such things here on the list. Hence the thanks. Neat the ways knowledge finds unexpected application! /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B

19 years

SWTPc 6800 vs. Altair 680

by ajp166＠bellatlantic.net

> >Subject: SWTPc 6800 vs. Altair 680 > From: "B. Degnan" <billdeg at degnanco.net> > Date: Wed, 14 Feb 2007 15:59:40 -0500 > To: cctech at classiccmp.org > >Are the programs from the SWTPc 6800 interchangeable with the Altair 680? >Is there a good web reference that compares these two? > Yes [it is a 6800 is both cases] and no [they are not identical for io or memory maps]. Depends on the IO and where the program runs in memory as they have slightly different memeory maps. Also if memory serves the 680 used a differnt monitor program than SWTP so any program that uses the monitor for IO or other routines are iffy. Allison

19 years

requirement for use of your real name on this list?

by tshoppa＠wmata.com

Al wrote: > "Hex Star" stands out like a sore thumb. Everyone else > on this list uses their real name, not a "handle". There's a couple of respected folks here using handles but they've been doing so for at least a decade. The concept of "screen names" has some "classic" elements esp. w.r.t BBS's (some legit uses) and phreaking (completely non-legit but somewhat respectable in a techie sense.) I grew up not with BBS's but with E-mail lists and Usenet and had used my real name there enough that the only time I use a screen name is when I want to hide who I am, something only rarely done. Before that, it was ham radio, where using a real call sign instead of a "handle" was a way of differentiating the hobby from CB and trying to get some respect. Tim.

19 years

Thank you, list!

by feldman.r＠comcast.net

There is a product called Cyanopoxy that was written up in the model railroad press a few years ago. It can bond materials such as nylon and delrin. I haven't tried it myself, but the reviews are favorable. It is fairly expensive, though. The link is: http://www.coolchem.com/index.cfm?fuseaction=cyanopoxy. Bob +++++++++++++++++++++++++++++++++ Message: 16 Date: Wed, 14 Feb 2007 14:45:40 -0600 (CST) From: Tothwolf <tothwolf at concentric.net> Subject: Re: Thank you, list! To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Message-ID: <Pine.LNX.4.64.0702141442220.10748 at host10.invalid.domain> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed On Tue, 13 Feb 2007, John Robertson wrote: > At 1:40 PM -0800 2/13/07, Chuck Guzis wrote: >> >> Great that it worked for you, but be advised that acetone will also (in >> my experience) turn some plastics into grainy mush, so it's not a >> universal solution for plastics. > > Yes, methylene chloride is the proper plastic solvent for styrene types. > Plexiglass, Lexan, and many plastics will soften with this, and bond > almost instantly. Hold for a few seconds to set, then let sit overnight > to reach maximum hardness. Doesn't dissolve the plastic other than at > the contact point. This is the stuff they use in plastic shops...along > with some other solvents. Has anyone found a solvent that will solidly weld the PC+ABS blends yet? I run into various blends of PC+ABS all the time and have yet to find anything that will work well. Methylene Chloride will melt the ABS part of the blend, but it makes a brittle joint. -Toth +++++++++++++++++++++++++++++++++

19 years

Why isn't Apple releasing patches for the Month of Apple Bug exploits???

by hexstar＠gmail.com

Why is it that there still has been just one patch released from Apple (that one that fixed the QuickTime exploit) to address just one of the many Month of Apple Bugs? These bugs need to be fixed and I really hope that Apple is actively working on patches for all of the exploits related to Mac OS X that the MOAB team found...is it because they're putting all their programmers energy into 10.5? If that's true they really should take a few of the programmers and assign them to making patches for these exploits...what's the chances of these exploits being fixed in 10.5? c'mon Apple...get on it already! :-(

19 years

HP minicarts found

by jwest＠classiccmp.org

Was going through all my HP paper tapes to inventory them and came across the following mini-cart cartridge tapes (the kind you use in a 264x terminal, DC100 I think). Unfortunately it is an obviously incomplete set, but thought I'd list it here in case anyone is desperate for one of them. They are all original HP labels. RTE II + III + IV, MINI-CART (PE), #1 (C) rev 1840 RTE II ONLY, MINI-CART (PE), #2 (C) rev 1840 DG 1000 CRTG #1*, MINI-CART PE FMGR, 24998-13301 (C) REV 2326 DG 1000 CRTG #2, MINI-CART PE FMGR, 24998-13302 (C) REV 1926 DG 1000 CRTG #5, MINI-CART PE FMGR, 24998-13305 (C) REV 1822 Jay West

19 years

televideo 925 keycaps

by dgriffi＠cs.csubak.edu

I've unearthed a Televideo 925 that I'd like to put into use. The only problem seems to be a missing keycap. I forget which one at the moment. Does anyone here have a broken 925 keyboard? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

19 years

requirement for use of your real name on this list?

by aek＠bitsavers.org

I was wondering if we can estabish that you have to use your real name here? "Hex Star" stands out like a sore thumb. Everyone else on this list uses their real name, not a "handle".

19 years

WTD: Fuse PROM programming algorithms

by dm561＠torfree.net

-------------Original Message: Date: Wed, 14 Feb 2007 22:54:36 +0000 From: Philip Pemberton <classiccmp at philpem.me.uk> Subject: Re: WTD: Fuse PROM programming algorithms M H Stein wrote: > If you don't find 'em elsewhere, I've got Harris ('78), Intel ('76), Signetics ('78) > and National ('77) databooks in front of me. Don't know about Intersil; was looking > in the MMI book a while back, but now I can't remember where I put it down at the > time (probably the same place as the cordless phone ;) . Don't worry about the Intersil databook - Harris bought Intersil in the mid-70s (IIRC), so an older Intersil databook would probably have the same (or very similar) info to the Harris book. I'd hazard a guess that most of the PROMs from a given manufacturer will use the same algorithm, so all I really need are scans of the pages detailing that manufacturer's algorithm and pinouts. The latter I already have in the form of a file called 'promref.txt' from the old Wiretap arcade archive :) Thanks. -- -----------Reply: Scans of the Harris, Signetics, NS & Intel data are on the way to you. I think someone else on the list had the MMI data; if I find mine I'll let you know. mike

19 years

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test-drb February 2007