Re: Sparc Laptops

Yes the IBMs are worth tracking down. I always keep my eye out but rarely see them come up for sale but it'd be fun to have an RS/6000 that doesn't cause a hernia to move. My only similar one is a tadpole but I don't recall the version. I used a universal power supply to get it to run for a

Re: R: Sparc Laptops

Hi, Ethan via cctalk wrote, > >I'd be interested as well if any are left. > >I sold a Sparcbook a while back that was missing the hard drive caddy. I > >just couldn't find a caddy and had a random buyer that wanted it for a > >museum. It did have it netbooting though, and they are fun machines! >

Re: cctech Digest, Vol 44, Issue 10

On 2018-05-11 2:37 PM, John Ames via cctech wrote: Looking at modern hard disks, I'm unconvinced we could even mass-produce something like that today. A 40mm radius is comparable to a 3.5" disk, which are generally 5,400-7,200 RPM. 15,000 RPM is the fastest available, but those tend to be

Re: Sparc Laptops

On 5/11/18 6:45 AM, Michael Thompson via cctalk wrote: Date: Wed, 9 May 2018 13:08:51 -0400 Subject: Re: Sparc Laptops I have a pretty cool DEC 486 laptop. I am unsure if they made a Pentium laptop before they were bought out. http://www.vintagecomputer.net/digital/DECpc_433SLC/

Re: cctech Digest, Vol 44, Issue 10

> Looking at modern hard disks, I'm unconvinced we could even mass-produce > something like that today. > > A 40mm radius is comparable to a 3.5" disk, which are generally 5,400-7,200 > RPM. 15,000 RPM is the fastest available, but those tend to be low-capacity > and > expensive, and are often

Re: Anyone have an HP 12661A DVS card manual, 12661-90004?

On Fri, May 11, 2018 at 12:16 PM, J. David Bryan via cctalk wrote: > On Friday, May 11, 2018 at 11:29, Al Kossow via cctalk wrote: > >> scanned, and uploaded to >> http://bitsavers.org/pdf/hp/21xx/interfaces > > Very much appreciated, thanks. > >

Re: Anyone have an HP 12661A DVS card manual, 12661-90004?

On Friday, May 11, 2018 at 11:29, Al Kossow via cctalk wrote: > scanned, and uploaded to > http://bitsavers.org/pdf/hp/21xx/interfaces Very much appreciated, thanks. -- Dave

Re: Anyone have an HP 12661A DVS card manual, 12661-90004?

scanned, and uploaded to http://bitsavers.org/pdf/hp/21xx/interfaces On 5/1/18 1:43 PM, Al Kossow via cctalk wrote: > OK, looks like it's time to give him a call.. > > On 5/1/18 11:51 AM, J. David Bryan via cctalk wrote: >> On Monday, April 30, 2018 at 10:22, Al Kossow via cctech wrote: >> >>>

R: Sparc Laptops

That's quite a lot of units. This said the only I ever saw from real is the Voyager... there was one in my university computing lab, a very nice design -Messaggio originale- Da: cctalk [mailto:cctalk-boun...@classiccmp.org] Per conto di Michael Thompson via cctalk Inviato: venerdì 11

Re: how fast were drum memories?

On Thu, May 10, 2018 at 01:53:12PM -0600, ben via cctalk wrote: [...] Can not be slower than modern computers, It takes 5 minutes for my mail program to load under windows and grab new mail. My mediocre laptop running linux is fully up and logged in in 15 seconds! That includes me typing

Re: how fast were drum memories?

On Thu, May 10, 2018 at 01:53:12PM -0600, ben via cctalk wrote: [...] Can not be slower than modern computers, It takes 5 minutes for my mail program to load under windows and grab new mail. My mediocre laptop running linux is fully up and logged in in 15 seconds! That includes me typing in

Re: how fast were drum memories?

The manual says 125A per phase (3-phase, 208V) starting current. I remember spin-down as 20 minutes, but that was a long time ago. :-) On Fri, 11 May 2018, Paul Anderson wrote: The good old days... I recall the Q-7 drums would take about 15 minutes to come to a stop when turned off,

Re: Sparc Laptops

> > Date: Wed, 9 May 2018 13:08:51 -0400 > Subject: Re: Sparc Laptops > > I have a pretty cool DEC 486 laptop. I am unsure if they made a Pentium > laptop before they were bought out. > http://www.vintagecomputer.net/digital/DECpc_433SLC/ > DECpc_433SLC_Premium_open2.jpg > b > > On Wed, May 9,

Re: how fast were drum memories?

On Thu, May 10, 2018 at 01:53:12PM -0600, ben via cctalk wrote: [...] > Can not be slower than modern computers, It takes 5 minutes for my mail > program to load under windows and grab new mail. And yet computer performance was perfectly acceptable before you started using Windows? The cause of

Re: how fast were drum memories?

The good old days... I recall the Q-7 drums would take about 15 minutes to come to a stop when turned off, and would power up in seven seconds or less. Surge current was around 115 amps? Paul On Thu, May 10, 2018 at 3:46 PM, Mike Loewen via cctalk < cctalk@classiccmp.org> wrote: > On Thu, 10