Re: rectangular sense core vs. diagonal

2017-06-08 Thread Chuck Guzis via cctalk
On 06/08/2017 01:08 AM, Christian Corti via cctalk wrote: > > I got two ECS modules, I put pictures of them on my FB album. I've also > put them on our server right now, at > ftp://computermuseum.informatik.uni-stuttgart.de/cdc/ecs/ > > The core planes are *huge*, about 4000cm² ! Thanks for

Re: rectangular sense core vs. diagonal

2017-06-08 Thread Mike Stein via cctalk
- Original Message - From: "Fred Cisin via cctalk" <cctalk@classiccmp.org> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Thursday, June 08, 2017 10:39 AM Subject: Re: rectangular sense core vs. diagonal > On Thu

Re: rectangular sense core vs. diagonal

2017-06-08 Thread Norman Jaffe via cctalk
There'd be no desk, just dust. From: "cctalk" <cctalk@classiccmp.org> To: "cctalk" <cctalk@classiccmp.org> Sent: Thursday, June 8, 2017 7:39:40 AM Subject: Re: rectangular sense core vs. diagonal On Thu, 8 Jun 2017, Mike Stein via cctalk wrote: > An

Re: rectangular sense core vs. diagonal

2017-06-08 Thread Fred Cisin via cctalk
On Thu, 8 Jun 2017, Mike Stein via cctalk wrote: Another reason why things were better in "The Good Old Days": While removing a (spring-loaded) microSD card from a tablet yesterday my fingernail slipped and 32 Gigabytes of data shot out and disappeared somewhere among the dust bunnies behind

Re: rectangular sense core vs. diagonal

2017-06-08 Thread Mike Stein via cctalk
- Original Message - From: "Christian Corti via cctalk" <cctalk@classiccmp.org> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk@classiccmp.org> Sent: Thursday, June 08, 2017 4:08 AM Subject: Re: rectangular sense core vs. diagonal > On

Re: rectangular sense core vs. diagonal

2017-06-08 Thread dwight via cctalk
oun...@classiccmp.org> on behalf of Christian Corti via cctalk <cctalk@classiccmp.org> Sent: Thursday, June 8, 2017 1:08:19 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: rectangular sense core vs. diagonal On Wed, 7 Jun 2017, Paul Koning wrote: >> How is ECS const

Re: rectangular sense core vs. diagonal

2017-06-08 Thread Christian Corti via cctalk
On Wed, 7 Jun 2017, Paul Koning wrote: How is ECS constructed? I fooled with a lot of it back in the day, but never got a good look at the core planes. I'd love to know. I never saw the insides of ECS. There are some documents on Bitsavers but none that I have seen show the ECS memory

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Paul Koning via cctalk
> On Jun 7, 2017, at 3:24 PM, Chuck Guzis via cctech > wrote: > > On 06/07/2017 10:47 AM, Paul Koning via cctech wrote: > >> 6600 core memory is documented in great detail in the training manual >> which is on Bitsavers. It has conventional diagonal sense lines. It >>

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Chuck Guzis via cctalk
On 06/07/2017 05:02 PM, Paul Koning wrote: > I'd love to know. I never saw the insides of ECS. There are some > documents on Bitsavers but none that I have seen show the ECS memory > subsystem itself, certainly not at the circuit level. I found a paper from SJCC 1967 that does a pretty good

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Chuck Guzis via cctalk
On 06/07/2017 10:47 AM, Paul Koning via cctech wrote: > 6600 core memory is documented in great detail in the training manual > which is on Bitsavers. It has conventional diagonal sense lines. It > does have some interesting design attributes, though. For one thing, > it has pairs of inhibit

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Brent Hilpert via cctalk
On 2017-Jun-07, at 7:12 AM, william degnan via cctalk wrote: > Where there any computers that used a "rectangular sense" core RAM? > Whirlwind core is diagonal. This page describes the differences/evolution > of the sense line. > > More: http://ed-thelen.org/comp-hist/Byte/76jul.html > > Were

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Paul Koning via cctalk
> On Jun 7, 2017, at 1:01 PM, Jon Elson via cctech > wrote: > > On 06/07/2017 09:12 AM, william degnan via cctech wrote: >> Where there any computers that used a "rectangular sense" core RAM? >> Whirlwind core is diagonal. This page describes the differences/evolution

Re: rectangular sense core vs. diagonal

2017-06-07 Thread Jon Elson via cctalk
On 06/07/2017 09:12 AM, william degnan via cctech wrote: Where there any computers that used a "rectangular sense" core RAM? Whirlwind core is diagonal. This page describes the differences/evolution of the sense line. More: http://ed-thelen.org/comp-hist/Byte/76jul.html Were rectangular core

rectangular sense core vs. diagonal

2017-06-07 Thread william degnan via cctalk
Where there any computers that used a "rectangular sense" core RAM? Whirlwind core is diagonal. This page describes the differences/evolution of the sense line. More: http://ed-thelen.org/comp-hist/Byte/76jul.html Were rectangular core planes used in any commercial/government computer that saw