[cctalk] Re: Z80 vs other microprocessors of the time.

On Mon, Apr 22, 2024 at 02:45:50PM -0500, Mike Katz via cctalk wrote: > Cycle accurate emulation becomes impossible in the following circumstances: > > * Branch prediction and pipelining can cause out of order execution >and the execution path become data dependent. > * Cache memory.  It

[cctalk] Re: Borland Turbo C++ and Turbo Basic - Books and Manuals

On Sun, Apr 07, 2024 at 12:05:32PM -0600, ben via cctalk wrote: > On 2024-04-07 5:57 a.m., Christian Groessler via cctalk wrote: > > On 4/6/24 5:37 PM, Mike Norris via cctalk wrote: > > > Additional > > > I would like £5 beer money for this one please! > > > Writing Open VMS Alpha Device Drivers

[cctalk] Re: Amoeba OS

On Thu, Mar 28, 2024 at 05:02:10PM +, Alessandro Mazzini via cctalk wrote: > Sorry if I intrude... now is no more possible to obtain hobbyist licenses for > vms ?? Not for OpenVMS/VAX, that stopped more than a year ago. IIRC you _can_ get something like[1] it for OpenVMS/amd64 from VMS

[cctalk] Re: DEC Processor Books

On Sun, Mar 17, 2024 at 03:58:00PM -0400, Paul Koning via cctalk wrote: > > I distinctly remember a comment from a DEC customer at DECUS: "When I'm at > DECUS, I always seek out the people wearing t-shirts, because I know they are > the ones who know what they are talking about." Reminds of

[cctalk] Re: BEWARE: Phishing

On Sat, Jul 08, 2023 at 12:49:43PM +1000, Doug Jackson via cctalk wrote: > To be completely honest, Electrotechnology students with 415v DC bench > supplies and HV caps all learnt very quickly not to catch something when > somebody threw it to you. Old electricians wisdom: "Be wary of honking

[cctalk] Re: BEWARE: Phishing

On Thu, Jul 06, 2023 at 07:16:38PM -0400, KenUnix via cctalk wrote: > Chuck, > > So what actions are we supposed to take?? Laugh, say "nix try", ignore that phishing attempt and move on with life. > I was going to go to the cloudflair link but got a message that this was a > dangerous site! Do

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Sat, Jun 03, 2023 at 07:47:35PM -0500, Cory Heisterkamp via cctalk wrote: > > > On Jun 3, 2023, at 7:12 PM, Alexander Schreiber via cctalk > > wrote: > > So the Mercedes T model was (at least in Germany, the manufacturers country) > > never called a "station w

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Sun, Jun 04, 2023 at 11:39:08AM +0200, Harald Arnesen via cctalk wrote: > Fred Cisin via cctalk [04/06/2023 02.50]: > > On Sun, 4 Jun 2023, Alexander Schreiber wrote: > > > So the Mercedes T model was (at least in Germany, the manufacturers > > > country) > > > never called a "station wagon"

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Sat, Jun 03, 2023 at 03:03:43PM -0700, Fred Cisin via cctalk wrote: > > > But, there is another problem. > > > None of the auto makers still make "Station Wagon"s! > > On Sat, 3 Jun 2023, Alexander Schreiber wrote: > > Not quite true. VW makes the "Variant" version of the VW Golf and > >

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Sat, Jun 03, 2023 at 12:25:48PM -0600, ben via cctalk wrote: > On 2023-06-03 11:46 a.m., Alexander Schreiber via cctalk wrote: > > On Thu, Jun 01, 2023 at 02:33:07PM -0700, Fred Cisin via cctalk wrote: > > > > > > But, there is another problem. > > > >

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Thu, Jun 01, 2023 at 02:33:07PM -0700, Fred Cisin via cctalk wrote: > > But, there is another problem. > > None of the auto makers still make "Station Wagon"s! Not quite true. VW makes the "Variant" version of the VW Golf and Mercedes still makes the "t model" of the C and E class, all of

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Wed, May 31, 2023 at 05:01:34PM -0700, Fred Cisin via cctalk wrote: > What is the bandwidth of a station wagon full of 1TB Mcro-SD cards hurtling > down the highway? $BIGNUM. But the latency is going to be orders of magnitude worse than the station wagon full of tapes, so there is that. Also,

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Wed, May 31, 2023 at 04:26:56PM -0700, Fred Cisin via cctalk wrote: > > > > I think I will just convert file sizes to lengths of paper tape for > > > > comparison: > > > > > > > > 1K            102.4" > > > > 10K      85' > > > > 100K        853' > > > > 1M           1.6 Miles > > > > 10M  

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Tue, May 30, 2023 at 12:22:53PM -0500, Mike Katz via cctalk wrote: > In 1981 when i got my first 5MB hard disk drive at work (I had to write the > drivers for the OS myself) I was able to put all or my source code, > binaries, executable, applications and the operating system and not fill >

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Sun, May 28, 2023 at 07:17:54AM +0100, Tony Duell via cctalk wrote: > On Sat, May 27, 2023 at 8:47 PM philip--- via cctalk > wrote: > > > > > > > USB interfacing is hard, but SD cards are a lot simpler. So use a card > > > reader thing to transfer the files to an SD card and design an > > >

[cctalk] Re: ***SPAM*** Re: ***SPAM*** Re: Getting floppy images to/from real floppy disks.

On Thu, May 25, 2023 at 12:30:52PM -0700, Chuck Guzis via cctalk wrote: > On 5/25/23 10:06, Guy Sotomayor via cctalk wrote: > > > > > The way SPARK works is that you have code and then can also provide > > proofs for the code.  Proofs are you might expect are *hard* to write > > and in many

[cctalk] Re: MCAS (was: Re: Getting floppy images to/from real floppy disks.)

On Thu, May 25, 2023 at 07:34:19PM -0400, Paul Koning via cctalk wrote: > > > > On May 25, 2023, at 6:29 PM, Christian Kennedy via cctalk > > wrote: > > > > > > On 5/25/23 12:30, Chuck Guzis via cctalk wrote: > >> ...and we still get gems like the Boeing 737MAX... > > > > I get your point,

[cctalk] Re: Getting floppy images to/from real floppy disks.

On Thu, May 25, 2023 at 02:47:06PM -0400, Paul Koning via cctalk wrote: > > > On 2023-05-25 5:52 a.m., Tony Duell via cctalk wrote: > > ... > > It is not unheard-of for classic PCs -- even ISAbus ones -- to have > > 10Mbps ethernet. Most, if not all, 100Mbps ethernet ports will fall > > back to

[cctalk] Re: Bubble Memory

On Fri, Oct 21, 2022 at 02:50:49PM -0500, Doc Shipley via cctalk wrote: > On 10/20/22 20:15, Doug Jackson via cctalk wrote: > > Sigh... > > > > Yet another American seler who doesn't understand how simple overseas > > shipping is. > > > Oh, we understand, we really do. We also get really tired

[cctalk] Re: Bubble Memory

On Fri, Oct 21, 2022 at 08:44:41PM -0500, Jim Brain via cctalk wrote: > On 10/21/2022 4:55 AM, Peter Corlett via cctalk wrote: > > On Fri, Oct 21, 2022 at 12:15:02PM +1100, Doug Jackson via cctalk wrote: > > [...] > > > Yet another American seler who doesn't understand how simple overseas > > >

[cctalk] Re: Great Vintage Computer Heist of 2012

On Tue, Oct 18, 2022 at 10:36:58AM -0400, William Donzelli via cctalk wrote: > Don't be pedantic. You know what I mean. > > Anyway, in the US, there are *significant* barriers to cross for > people taking your land. Owe the local government a few bucks in unpaid tax? They steal your house (well,

[cctalk] Sun Fire V100 CPU not coming up on poweron

Hi, I've got Sun Fire V100 that I'm pretty sure at some point in time actually worked, since I loaded the board with the maximum amount of memory supported (2G). Now, however, when powering on, the LOM comes up but upon issuing the poweron command the main CPU apparently doesn't, all I get is

Re: Linearizing PDF scans

On Fri, Aug 13, 2021 at 06:15:21PM -0400, J. David Bryan via cctech wrote: > On Friday, August 13, 2021 at 17:23, Alexandre Souza wrote: > > > Is any kind of standard, recomendation, group, mail list, to discuss > > the subject? > > I am not aware of any. I started with Al Kossow's basic

Re: Writings on AI from 17 years ago....

On Mon, May 24, 2021 at 04:22:52PM -0400, Chris Zach via cctalk wrote: > Ah however in the door pocket there is a letter stating that if Paul ever > got tired of the system or the museum closed that I would come and pick it > up again. > > Done this a number of times. It kind of gets old, but I

Re: 920M - and also the Argus 200 / 700

On Tue, May 04, 2021 at 10:01:22AM +0200, jos via cctalk wrote: > Yep, Europe was also active at the time. > > in the UK around 1960 the Argus 200 was developed to control the Bristol > Bloodhound anti-aircraft rocket. This computer was one of the very first > transistor-based control

Re: Emails going to spam folder in gmail

On Wed, Dec 30, 2020 at 10:18:56AM -0500, Chris Zach via cctalk wrote: > > Attempting to pull in this thread a tad, there are relatively simple > > measures that can be taken to bring a private mail server into compliance > > with gmail, Amazon, Microsoft level mail server protocol and > >

Re: HPE OpenVMS Hobbyist license program is closing

On Wed, Mar 11, 2020 at 08:08:43AM -0700, Al Kossow via cctalk wrote: > > > Years ago us SGI hobbyists were able to talk to SGI about this and a huge > > problem SGI had with any kind of hobbyist > > license for IRIX or turning it free is it's fully of licensed 3rd party > > stuff. But maybe

Re: Searching cctalk/cctech

On Mon, Sep 02, 2019 at 09:13:40PM -0700, Chuck Guzis via cctalk wrote: > On 9/2/19 7:37 PM, Fred Cisin via cctalk wrote: > > On Mon, 2 Sep 2019, Chuck Guzis via cctalk wrote: > >> Anent that--Google does have a search language of sorts: > >>

Re: Raspberry Pi write cycles

On Fri, Aug 09, 2019 at 02:43:38PM -0700, Adam Thornton via cctalk wrote: > I did have a case where the Pi I was using as secondary DNS/DHCP and as the > secondary backup server (using USB spinning disk) destroyed its SD card. > > But then it turned out not to be the load at all. No matter what

Re: SCSI2SD: Is it worth a try?

On Wed, Mar 20, 2019 at 11:37:49AM -0400, Douglas Taylor via cctalk wrote: > I've used the SCSI2SD with great success with vintage DEC computers. > On QBUS machines, both vax and pdp-11, it has worked with Emulex UC07, TD > systems Viking, Andromeda SCDC and the DEC RQZX1 controllers. > I have

Re: how good is the data reliability with CD ROM and DVD RAM?

On Wed, Jul 25, 2018 at 04:28:54PM -0700, Chuck Guzis wrote: > On 07/25/2018 02:56 PM, Alexander Schreiber wrote: > > > Of course there are. Since both SD cards and µSD cards have identical > > electrical and protocol interfaces, those adapters are just passive pieces > > of plastic and wires. In

Re: how good is the data reliability with CD ROM and DVD RAM?

On Mon, Jul 23, 2018 at 10:54:26AM -0700, Chuck Guzis via cctalk wrote: > On 07/22/2018 09:05 PM, Warner Losh via cctalk wrote: > > Throughout this whole thread, I've been tempted to say that you get better > > data fidelity if you take a green magic marker and mark the edges of the > > disk... >

Re: how good is the data reliability with CD ROM and DVD RAM?

On Sun, Jul 22, 2018 at 08:06:24PM +0200, Carlo Pisani via cctalk wrote: > thus DDS4, LTO2, DLT: which is the best tape? If you even remotely care about your data, stay far away from DDS. In a previous job we used DDS3 tapes as system backup and restore tapes (since the machines could boot from

Re: RAID? Was: PATA hard disks, anyone?

On Wed, Mar 28, 2018 at 01:17:08PM -0400, Ethan via cctalk wrote: > > I know of no RAID setup that can save me >from stupid. > > I use rsync. I manually rsync the working disks to the backup disks every > week or two. Working disks have the shares to other hosts. If something > happens to that

Re: RAID? Was: PATA hard disks, anyone?

On Tue, Mar 27, 2018 at 10:26:53PM -0300, Paul Berger via cctalk wrote: > > > On 2018-03-27 10:05 PM, Ali via cctalk wrote: > > > > > > Original message > > From: Fred Cisin via cctalk > > Date: 3/27/18 5:51 PM (GMT-08:00) > > To: "General

Re: [RESOLVED] Re: EPROM baking

On Mon, Feb 05, 2018 at 11:06:29AM -0800, Chuck Guzis via cctalk wrote: > On 02/05/2018 10:20 AM, Mark G Thomas via cctalk wrote: > > > 2) Many of the chips were failing to program because my Batronix > >programmer apparently requires more current than my USB port provides. > >This

Re: Large discs (Was: Spectre & Meltdown

On Thu, Jan 04, 2018 at 06:38:10PM -0800, Fred Cisin via cctalk wrote: > On Thu, 4 Jan 2018, TeoZ wrote: > >Hard drives NEVER keep up. Bragging about how many DVD's (90's technology) > >you can store on current HD means little to people who have ultra HD > >Blueray videos that take up to 100GB of

Re: Bitsavers size

On Thu, Apr 20, 2017 at 05:49:20PM +, Shoppa, Tim via cctalk wrote: > Ben asks: > > Just how big is the server? > > As a wish list, I've always wanted that as a offline set of DVD's for the > > common stuff. > > The bitsavers archive is 267 Gbytes. > > So at 4.7G per DVD, it comes out to