On 5/6/21 7:35 PM, Chris Zach via cctalk wrote:
Ah well. I don't think it was evil marketing or VAX monsters that killed the KC10, it was simply the fact that the amazing instruction set
couldn't be pipelined to make it more efficient for hardware and the memory management system wasn't as ef
Message: 18
> Date: Thu, 6 May 2021 15:18:04 +0200
> From: Liam Proven
> To: Jay Jaeger , "General Discussion: On-Topic and
> Off-Topic Posts"
> Subject: Re: That VAXStation4000vlc 3W3 video connector
> Message-ID:
> <
> camtencgkync++ct2gfpcvvnttjv-frvivhuoxlcjwdesf2w...@mail.gm
Chris - great and interesting overview. Do you have a reading list for more
details? Thanks!
Lee Courtney
On Thu, May 6, 2021 at 7:35 PM Chris Zach via cctalk
wrote:
>
> > Sort of. But while a lot of things happen in parallel, out of order,
> speculatively, etc., the programming model exposed
On 5/6/21 7:47 PM, Chris Elmquist wrote:
> We had a room on the ground floor at ETA that housed an MG set that
> ran the CY205 (and maybe the 835 and 875 too) in the basement. They
> had isolated the MG from the mounting pretty well in addition to
> sound proofing the room because with door closed
> On May 5, 2021, at 10:37 AM, Chuck Guzis via cctalk
> wrote:
>
> On 5/5/21 5:18 AM, Paul Koning wrote:
>
>> An earlier message commented on the whine from power converters. I
>> don't know how common this practice was, but at the University of
>> Illinois PLATO system which had a pair of
Sort of. But while a lot of things happen in parallel, out of order, speculatively, etc., the
programming model exposed by the hardware still is the C sequential model. A whole lot of logic is
needed to create that appearance, and in fact you can see that all the way back in the CDC 6600
"
> On May 6, 2021, at 5:53 PM, Adam Thornton via cctalk
> wrote:
>
>> ...
> Yes, that. C is a great assembly language preprocessor for a PDP-11. The
> PDP-11 is a beautiful, intelligible architecture, where things happen one
> at a time in sequence. This is easy to think about. Unfortunate
From: Liam Proven
> To: "Discussion: On-Topic and Off-Topic Posts"
> Subject: Re: Motor generator
>
> I think because for lesser minds, such as mine, [APL is] line noise.
>
> A friend of mine, a Perl guru, studied A-Plus for a while. (Morgan
> Stanley's in-house APL dialect.) He said to me that "
On Thu, 6 May 2021 at 16:13, Paul Koning wrote:
> > I suppose APL might come closest, but it's hardly mainstream.
>
> No reason why it couldn't be. It's the same age as C, so why not? :-)
I think because for lesser minds, such as mine, it's line noise.
A friend of mine, a Perl guru, studied A
> On May 6, 2021, at 9:45 AM, Liam Proven via cctalk
> wrote:
>
> On Thu, 6 May 2021 at 02:19, Jules Richardson via cctalk
> wrote:
>>
>> I seem to recall an anecdote about Acorn hooking up the first prototype
>> ARM-1 processor and it working, despite showing no current draw on the
>> conn
I don’t refer to them as Audio-phools.
They are GESR’s. (pronounced guesser)
Golden
Eared
Sonic
Reviewers
They guess this sounds better than that, so it must be worth it.
David
> On May 5, 2021, at 6:31 PM, Jay Jaeger via cctalk
> wrote:
>
> I think a lot of the time audio-phools, i
On Thu, 6 May 2021 at 02:19, Jules Richardson via cctalk
wrote:
>
> I seem to recall an anecdote about Acorn hooking up the first prototype
> ARM-1 processor and it working, despite showing no current draw on the
> connected ammeter - it then transpired that the power supply was still
> switched o
On 5/6/2021 8:26 AM, Jay Jaeger via cctalk wrote:
Apparently, yes: https://dl.acm.org/doi/10.1145/365660.365671
https://docs.lib.purdue.edu/dissertations/AAI7003878/
https://minds.wisconsin.edu/bitstream/handle/1793/57766/TR160.pdf?sequence=1&isAllowed=y
The last two papers involved
On 5/6/2021 12:14 AM, Chuck Guzis via cctalk wrote:
On 5/5/21 6:40 PM, Jay Jaeger via cctalk wrote:
While I was in grad school at U.W. (the one in Wisconsin) we had
obtained via surplus an IBM 7094 II from military surplus - I seem to
recall WSMR (White Sands Missle Range). Of course, it had a
On Wed, 5 May 2021 at 17:59, Jay Jaeger via cctalk
wrote:
> I, for one, did find this helpful - one could make one of these up to
> test before possibly forking over the funds to build one properly.
If anyone were up to making a small batch of these, I'd be happy to
pay for a few, plus shipping
Applying a square wave of 15kHz has harmonics up to 100kHz and more.
That means, that the current in these is more than 100 times bigger - BAM!
Additionally, output devices with really fast switching times can trigger
reflections back from the load, and these can potentially expose these
devi
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