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The midseventies SHARE survey 65
you could also tell the high-end machines ... 165, 168, 3033, etc were designed with OS-VS2 virtual memory in mind. one of the bits used to index the TLB (table look-aside buffer...
The midseventies SHARE survey 66
i have some recollection of being in pok machine room (705-706?) 3rd shift and working around ludlow(?) on a 360-67...
The midseventies SHARE survey 67
1977 is pretty early for such user groups, and give a window onto another era. In retrospect it is totally amazing what...
The midseventies SHARE survey 68
I'm sure one reason for those 360s hanging around so long when faster-better-cheaper alternatives were available was a...
The midseventies SHARE survey 69
What I was referring to was the way the leasing companies did business. IBM charged rental fees based on the machine purchase price spread over 5 years. IBM...
The midseventies SHARE survey 70
there was a 360 DAT box available on the 360-65 ... it was called the 360-67. DAT-virtual memory was really expensive in...
The midseventies SHARE survey 71
one of the issues of applying scarce resources to bldg new stuff or niche markets...
The midseventies SHARE survey 72
at html You righht, I have always wondered about that piccy. I think it must be wrongly labeled. However the cabinets containing the store were huge. If you look at You can...
The midseventies SHARE survey 73
On Mon, 31 Jan 2005 10:57:54 -0800, glen herrmannsfeldt I was a SysProg at a company in Denver that...
USN hard drives. The midseventies SHARE survey
Weird. My fire control systems (MK88-2 and MK98-0) had a pair of IBM drives in them...
The midseventies SHARE survey 75
os-360 had another kind of failure mode .. the 1052-7 used as operator consoles on most 360 machines ... and if the 1052-7...
The midseventies SHARE survey 76
and might run on the 85, 75, some possibility in 65 (i.e. the 65 tended to...
Depreciation of capital buttets The midseventies SHARE survey
Peter Flbutt Depreciation of book value for buttets is supposed to track the slow loss of...
The midseventies SHARE survey 78
You buttume there exist an incremental, migratory way for the stuff you program onto that mainframe. After all, they did cost tens of millions of...
The midseventies SHARE survey 79
amdahl gave a talk at mit in the early 70s and was asked a number of questions about the justification he used with VCs for funding his new company to make mainframe...
1229 REP & 47F0
the comments in the buffer overrun thread about patches take me back in time. around 1970, the programmers...
Cerf and Kahn receive Turing award 81
Morten Reistad tion, and say that the Internet constructions. my wife has her name on an (international-pto) token pbutting...
Cerf and Kahn receive Turing award 82
for the NSFNET2 RFP ... there was a red team and a blue team formed for...
Cerf and Kahn receive Turing award 83
About three quarters of the way down the page is the origin of the line...
Latest news about mainframe
i gave presentation at fall '86 european share (SEAS) meeting ... was on the isle of jersey. "share europe" (seas) url: from above: SHARE Europe (SEAS...
First device driverhow to get started
says... There is a fairly decent book (several editions out, try and get the latest), called Linux Device Drivers by Rubini...
RIP Jef Raskin
Jef Raskin, user interface pioneer, dies at 61 He was the lead designer of the first Macintosh computer News Story by James Niccolai FEBRUARY 28, 2005...
Computer Architecture Pages Back Up sort of
On my home page, there is now a link to the document a document embodying an updated version of the description of a computer architecture formerly on my web site, as I found I...
40 yearold computers still in use 88
On Mon, 07 Mar 2005 04:36:12 +0000, Tim Chmielewski We've got a Marconi TAC at the Computer Museum, Bletchley Park which...
40 yearold computers still in use 89
Steiner) Windows 3.0 in the Real and Standard modes used to run in Desqview-X VDMs. I was talking about a library, though, which enabled...
40 yearold computers still in use 90
Alexandre Peshansky anyway I believe there was substantially more to that story than pure folklore. Certainly it provided some inspiration for subsequent reverse engineering of silicon. ;) Reverse engineering silicon always has been done and...
40 yearold computers still in use 91
Apologies for a tardy follow-up to this, but I thought some of these points worth picking...
40 yearold computers still in use 92
True, but there were duds in the 70's. RCA sold zillions of CTC-38s and there's few of...
40 yearold computers still in use 93
fOn Sat, 12 Mar 2005 07:22:13 GMT in alt.folklore.computers, ace Mirroring is not enough. Walnut Creek and SimtelNet used to have mbuttive collections of software for many platforms...
40 yearold computers still in use 94
We'll need to build a (for the time being) planet-wide respository. OK, let's call it 'the archive'. You need a full distribution network for such a thing. A kind of union between...
10base5, 1base5, starlan1, 10broad36
I have currently running my lab-museum 10base2 & 10baseF (10 mb-sec optical). I am trying to set up a short...
Cranky old computers still being used 96
spit I don't know. I'm hoping that if I blow just right, it'll melt before I log off. That VROOMVROOM machine is just too big for me. I've had...
Cranky old computers still being used 97
Harley, having realized the need to yuppieproof their bikes a few years back, added bank angle switches that kill the motor if you lean the bike past X angle... Oh...
Cranky old computers still being used 98
dogsnus as an aside, the internal network had more nodes than the arpanet-internet from just about the beginning to sometime mid...
Misuse of word "microcode" 99
John Savard sense the low-end 370 machines tended to have vertical microcode .... instruction set that looked very much like regular instructions. many of these implementations ran at approximately 10:1...
Misuse of word "microcode" 100
the 370 115-125 were another interesting microcode machines. the basic machine had a shared memory bus with ports...
Misuse of word "microcode" 101
Peter Flbutt I note also in the low-end 360s, not only was 360 instruction set implemented using the instruction set (microcode) of the native processing engine ... but they also had...
Misuse of word "microcode" 102
The Packard Bell 440 was later the Raytheon PB440, and extended to the 520. I loved it. The microcode ran out...
Misuse of word "microcode" 103
Morten Reistad My quick impression of "real microcode": (partly tongue in cheek) 1. It lives in expensive memory that is: - faster than main storage - wider than main storage - if possible a...
Misuse of word "microcode" 104
Jason Ozolins That was probably me. Microcode still makes sense as a way to achieve cross-cpu-model compatibility, but when somone asks for...
Misuse of word "microcode" 105
What do you mean by "different microcode"? On the 360-30, you could select some options on the console and you would have a 1401 (I...
Misuse of word "microcode" 106
George Neuner Legend has it that Apple negotiated with Motorola about putting special instructions in microcode for use by Quickdraw...
Misuse of word "microcode" 107
I haven't looked at the patents ... what I know about the 68K's internals is mostly based on the computer press articles published when it first appeared...
DOS ACPI power off utility
Solaris x86 10 is free. You can enable the ACPI poweroff debug mode, and then power off the PC via the OS...
Decimal Exponent Floating like in JOSS
On my web page, at I have a link to a document at which is a 142-page .PDF in two...
Decimal Exponent Floating like in JOSS 110
At first, I thought that there wasn't that much in common. I was providing an architecture which included a number of features that were on old computers and which...
Where should the type information be
It is not necessary that the entire opcode be decoded before the instruction is issued. One of the oddest I have seen was GEORGE, in which there...
Where should the type information be 112
Tom, I have LOTS of experience with Basic-VB (Visual Basic) where the "variant" type is a mainstay. They literally have tens of thousands of NaN types, not to...
Where should the type information be 113
Christian Bau In AWK, variables can be either strings or numbers, depending on what was stored into them...
Where should the type information be 114
On Fri, 18 Mar 2005 16:10:23 -0700, Steve Richfie1d Maybe the problem is a sloppy language spec? I can see no really good reason not to...
Where should the type information be 115
A machine architecture that has an indirect bit for effective address calculation for all instructions. +--------------- Heh! Yes, I loved the...
Where should the type information be 116
John, YES, another GE-Honeybucket jock! Don't forget the Repeat Double instruction that allowed you to construct your own instructions that ran at the same speed as hardwired instructions! There were two instruction end...
Where should the type information be 117
Nick Maclaren Some further comments, that may be out of date as google is not showing recent...
Where should the type information be 118
Well, I might be misremembering, and it might have been 1980 :-) Regrettably, those references aren't precise enough to be...
Where should the type information be 119
Herman, et al, Point of clarification. My '754 replacement proposal does NOT include implicit typing. Maybe in another decade or two ... I think...
Where should the type information be 120
snip If you mean that you must consider every aspect of the Burroughs large scale system architecture together and...
Where should the type information be 121
Stephen, There WAS some (relatively minor) interplay, as the stack architecture determined which instructions were likely to occur one after the other, which in turn affected how the systems that overlapped operation needed...