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DOS360: Forty years 531
lots of 370-148 were 512k and sometimes even a mbyte (memory technology getting used was cheaper) and 370-168 wasn't unusual to have...
DOS360: Forty years 532
to some extent it was transfered bytes per mip ... and-or arm accesses per mip. in the late 70s ... i started making some observation that disk relative system performance had declined by something...
DOS360: Forty years 533
I think some of you need to see a modern server PC with a decent OS...
Intel x86 architecture word size
Motaz Saad Architectures don't have word sizes, implementations do. (Or so some people will say.) memory Let's take the IBM 360 architecture. Most people call it a 32-bit architecture, because...
Security via hardware 535
one of the security models is PAIN: * Privacy * Authentication * Identification * Non-repudation there is the 3-factor authentication model * something you know * something you have * something you are the "something you...
Security via hardware 536
misc. references the issue isn't worrying about the certification of who is using an authentication hardware token .... since there are huge number of existing business...
Security via hardware 537
re: further addenda to evolution of software pricing and licensing of software to specific processor (installing licensed software so that it only ran on a specific processor ... and...
Security via hardware 538
so had trusted ID type support ... but not for actually building a trusted system ... but for the evolving software pricing & licensing infrastucture ... similar to current day DRM...
Good morning or good evening depending upon your location. I want to ask you the
This is true, because you might go to that other place, you just don't know until your number is called. The...
Single System Image questions 540
homework question, right? the hone system provided dataprocessing support for world-wide sales, marketing, and field personnel. in the late 70s, the US hone datacenters were consolidated in california. circa 1980, the...
Single System Image questions 541
of btract a hundred and four for e-mail. Only if you had to have each binary on the system to be able to...
Exceptions at basic block boundaries 542
Michel Hack physical the "table" (Set Lynn industry-standard it on older machines ... there tended to...
Exceptions at basic block boundaries 543
in much the same way that cp67 had to maintain "shadow" virtual keys for virtual machines ... cp67 also had to maintain "shadow...
Exceptions at basic block boundaries 544
360-67 and 370 had hirrarchical tables ... slightly different ... enuf to make virtual machine implementations of the different tables something...
Exceptions at basic block boundaries 545
360-67 & 370 used shared segments for sharing of pages ... i.e. implicit only one PTE per page frame (multiple...
Exceptions at basic block boundaries 546
Eric P. working set tended to buttign a task a set number of real pages. when a task faulted, local LRU replacement would select one of the...
Outsourcing
Hi, We have frequently discussed outsourcing here, and I thought you might be interested in the following which appeared in a mailing list I subscribe to. I don't know how true it is, or...
Outsourcing 548
Outsourcing" - which has become synonymous with sending American jobs to India or China ... +--------------- (*sigh*) Yes, sadly, it has -- a terrible case of vocabulary drift. "Outsourcing" *used* to...
Outsourcing 549
There are a number of places in the world where the rich and poor world meet at some sharp borders. The US has a long one...
Crash detection by OS
Del Cecchi processor crash for ha-cmp besides distributed lock manager, we had to do cluster membership management ... removal of member on possible failure as well as re-integrating a...
May 6 1955: First disk storage demonstration
On May 6, 1955, IBM publicly demonstrated its new invention, disk storage. The disk drive would hold far more data at lower...
Today's mainframeanything to new 552
microchips FE service people had requirements that they could bootstrap diagnosis starting with probes and scope. the 3081 starting with TCMs where there wasn't anyplace to put probes ... and so there was a...
Today's mainframeanything to new 553
All sessions to the machines in question are via ssh and a pretty paranoid vpn...
Today's mainframeanything to new 554
That could have to do with some aspect of the tty support unrelated to load. It would be interesting to profile the code and see exactly where it was during this delay. My experience with...
Today's mainframeanything to new 555
the original vm370 smp support had some fine-grain locking ... but had a global lock on much of the kernel. this bore some simularities to some of...
Today's mainframeanything to new 556
Actually, both are often highly related and can only be fixed by watching both at the same time. Depends on the system in question of course. Not...
Today's mainframeanything to new 557
Charles Shannon Hendrix) writes: Either that or (in the case of my Win98 box), the memory locations the program scribbles on moves from a critical area...
Today's mainframeanything to new 558
Of course there is measurement and security overhead; but you are in error about performance and security monitoring being contrary. They are different views...
Description of a new oldfashioned programming language
John Savard - requiring the low-end and mid-range 360s & 370s had vertical microcoded engines ... look very much like normal instruction streams. they nominally avg. about ten native instructions per...
First buttembly language encountershow to get started 560
I'd already been programming buttembler on other platforms for years before I first encountered a PC, so my...
First buttembly language encountershow to get started 561
Well, Duh!, and as you pointed out elsewhere the 8031-8051 style trumps even that. But when Apple , Commodore, PET, Amiga and CP-M systems were all slugging it out, and the issue was...
The Monstrous EU Was: First buttembly language encountershow to get started
Since I live in NL, I'll leave it to those resident in the UK to challenge...
First buttembly language encountershow to get started 563
If you try to formally analyze it you get into even worse lapses in symmetry and logic than to try to ditto...
First buttembly language encountershow to get started 564
Peter Flbutt I'd say that we have both very isolated suburbs and very social suburbs - and everything in between. Even around the same city, and that part does generalize... well, not sure...
First buttembly language encountershow to get started 566
Giles Todd As the person who pointed that out, let me say that I tend to agree...
First buttembly language encountershow to get started 567
Brian Inglis AIUI, linguists don't really make a distinction between the notion of "dialect" and the notion of "language", instead recognizing that there is no sensible way to...
First buttembly language encountershow to get started 568
Brian Inglis Smattering about covers it for the Italian. Thanks to an exceptionally well-funded American public school district...
First buttembly language encountershow to get started 569
This is the level of language training expected of someone majoring in languages or literature here; even if they only take the required ligvistics. A standard...
First buttembly language encountershow to get started 570
Morten Reistad Interesting. Of course Greek texts had a great impact on European music history too, both via the Latin theorists who...
First buttembly language encountershow to get started 571
snip} snip story of what a real exam is like Technical fields don't have such requirements; but once you touch into...
First buttembly language encountershow to get started 572
And this distinguishes it from literary German or bureaucratic "Papierdeutsch" in what particular respect?? (Besides which, it's the finite verb that goes at the end...
First buttembly language encountershow to get started 573
Nick Spalding Then there's Mark Twain's famous "...studying German, where you mull along, in a groping, uncertain way, for thirty years; and at last, just...
First buttembly language encountershow to get started 574
Roland Hutchinson Did I point out the obvious factor that 16th-century Italian isn't quite the...
First buttembly language encountershow to get started 575
Far better would be a KIM-1 or a SDK-85 or some other early single board computer, because not only are the CPUs simple enough that one can hand buttemble the code, but they...
Status of Software Reuse
What are people's feelings about the state of software reuse? I was thinking about this, strangely enough, because I saw someone with one of...
Status of Software Reuse 577
for some topic drift ... cp67-cms had an update command, it basically was used to merge an "update" deck...
Status of Software Reuse 578
Colonel Forbin I think it's on the up. In fact I know it's on the up. :) "Open" Source has encouraged code re...
Status of Software Reuse 579
I never bought the idea of wholesale source-code reuse. New stuff needs to be...
Status of Software Reuse 580
They usually do in most applications. There are relatively few large projects where the development of a specific language is part of the project, at least outside research projects. Most adapt some preexisting thing...
Status of Software Reuse 581
You don't have to say "language" to investor. "Powerful scripting capabilities" is what you tell them. It is a sensible way to break up code complexity...
Status of Software Reuse 582
To build a decent piece of reusable code takes a lot of care. As you say, it requires more time than most managers are willing to spend, even if it can pay for itself...
Status of Software Reuse 583
Agreed. Also, a lot of Java out there is anything but portable. In fact, I find most internal Java code is less portable than Perl and C code of the same kind. Java is 99...
Behavior in undefined areas
I've told the story about the joint cambridge endicott project for the cp67 H&I kernels. Basically the "H" cp67 updates were to create virtual machines that conformed to...
GreenZap is a new alternative to PayPal and Moneybookers
He doesn't know jack poo about chess, polgars, or anything else, not do you. You're too incredibly stupid to understand my post as evidenced by your little googling activity. You don't have a clue...
Systems Programming for 8 Yearolds 586
adventure was originally done in Fortran. i believe shortly after it was available on sail-pdp10 at stanford ... somebody from tymshare had ported it to cp-cms. tymshare was one...
Systems Programming for 8 Yearolds 587
Rich Alderson Well, there are so many three-letter abbreviations...CDC, BBN, IBM, FBI, CIA... IMHO, the interview I mentioned...gives...
Systems Programming for 8 Yearolds 588
there was an iucv emulation done for mvs at one time. the early mainframe tcp-ip product was done in pascal-vs...