Best thing to do is keep an old 10mbit switch or hub around with 100mbit or
gigabit uplink. Second best thing is to have a router that will talk 10mbit
half duplex.
I've also found some poorly behaved stuff that won't autonegotiate duplex even
with older switches, like my 3Com SuperStack II.
On Sun, May 28, 2023 at 7:18 AM Tony Duell via cctalk
wrote:
> >
> > Tony, I don't recall what became of the AT with 486 replacement
> > processor that used to be your main home machine. ISTR it had loads of
> > different floppy drives hung off it. Is it still functional /
> repairable?
>
>
> On May 28, 2023, at 14:18, Paul Koning wrote:
>
> Dropped support for it on 10 Mb links? That seems like a crazy change to
> make. I know it was defined but basically unused at higher speeds.
No just the half duplex part of the standard. The 10 Mb/s full duplex links are
still
> On May 28, 2023, at 1:46 PM, Craig Ruff via cctalk
> wrote:
>
> FYI: The Ethernet standards dropped support for half duplex connections a few
> years back, so that if you have something that depends on half duplex links a
> recent Ethernet switch might not support it.
Dropped support
I found that out the hard way recently when I acquired my AS/400 and the
10Mb/s card for it. It did not like talking to my 10/100/1000 switch at all.
And of course I had recently gotten rid of my old 10Mb/s hub I had been
saving for a couple of decades... Had to resort to eBay for an ancient hub.
FYI: The Ethernet standards dropped support for half duplex connections a few
years back, so that if you have something that depends on half duplex links a
recent Ethernet switch might not support it.
On 5/28/23 09:17, Tony Duell wrote:
> I've come across the former and have the datasheets. From what I
> recall it was common to use it a control store sequencer and have
> microcode ROMs wider than the 8X300 needed, the extra bits were used
> to directly control hardware.
Power hog (well, it
On Sun, May 28, 2023 at 4:36 PM Chuck Guzis via cctalk
wrote:
> All of these flux-transition gizmos, whether or not they're the
> Applesauce, Greaseweazle, Catweasel, Fluxengine, Deviceside work
> exactly the same way. A counter free-runs, and every time there's
> change in direction of
On 5/28/23 07:54, Tony Duell via cctalk wrote:
>> I'm suprised to hear you're familliar with the GreaseWeasel but have
> Most of my computers [1] use normal FM or MFM disks and I would hope
> the Greaseweazle software could handle that.If I can convert to/from a
> disk image file I can probably
On Sun, May 28, 2023 at 2:32 PM Adrian Godwin via cctalk
wrote:
>
> Tony,
>
> An instrument slightly more to your taste than a PC might a 16500b logic
> analyser. Perhaps you've already got one. I believe these can work with
> both LIF and MSDOS floppies and uses an IDE HDD (which can painlessly
> I'm suprised to hear you're familliar with the GreaseWeasel but have
> never heard of BlueSCSI. ( https://scsi.blue/ ). Though SASI
> compatability seems "possible but not guaranteed", being an open source
> project, you can probably wangle the existing PCB's/software to be SASI
> compliant.
-- Original Message --
From: "Tony Duell via cctalk"
To: "General Discussion: On-Topic and Off-Topic Posts"
Cc: phi...@axeside.co.uk; "Tony Duell"
Sent: Sunday, 28 May, 2023 At 07:17
Subject: [cctalk] Re: Getting floppy images to/from real floppy disks.
I suspect USB-SCSI
Tony,
An instrument slightly more to your taste than a PC might a 16500b logic
analyser. Perhaps you've already got one. I believe these can work with
both LIF and MSDOS floppies and uses an IDE HDD (which can painlessly be
replaced with CF card) in DOS format internally. I don't know if it will
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
> > >
On Sat, May 27, 2023 at 10:00 PM Alexander Schreiber via cctalk
wrote:
> Which is why among the more cynic^Wexperienced SREs (my line of work)
> we sometimes use the term "Working As Implemented" when the code behaves
> exactly as written (and ofteni as specified), but still does the wrong
>
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
> > interface for that to ISA bus.
>
> Thinking of that, I had actually wondered whether
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