On 4/23/22 13:12, Fred Cisin via cctalk wrote:
> On Sat, 23 Apr 2022, Craig Ruff via cctech wrote:
>> The P112's floppy controller is the one in the SMSC FDC37C665IR
>> SuperIO chip. The data sheet states it is a 2.88 MB "Licensed CMOS
>> 765B Floppy Disk Controller" and claims 100% IBM compatibili
On Sat, 23 Apr 2022, Craig Ruff via cctech wrote:
The P112's floppy controller is the one in the SMSC FDC37C665IR SuperIO
chip. The data sheet states it is a 2.88 MB "Licensed CMOS 765B Floppy
Disk Controller" and claims 100% IBM compatibility (for what that's
worth).
2.8M (it is not "2.88" u
The P112's floppy controller is the one in the SMSC FDC37C665IR SuperIO chip.
The data sheet states it is a 2.88 MB "Licensed CMOS 765B Floppy Disk
Controller" and claims 100% IBM compatibility (for what that's worth).
On Thu, Apr 21, 2022 at 11:14 PM Fred Cisin via cctalk
wrote:
>
> On Thu, 21 Apr 2022, Mike Katz via cctalk wrote:
> > Intel has never understood interrupts or good cpu architecture.
> > Look at the segment:offset architecture of the 8086 and of course it's
> > single
> > interrupt (without the s
On Sat, Apr 23, 2022, 10:11 PM Bjoren Davis via cctalk <
cctalk@classiccmp.org> wrote:
> Hello Retroovers,
>
> Here's something interesting that Oleksii in Ukraine discovered.
>
> While playing with a Fluxengine, he found that some RX50s have data,
> stored in FM format, in a single sector the 81s
Hello Retroovers,
Here's something interesting that Oleksii in Ukraine discovered.
While playing with a Fluxengine, he found that some RX50s have data,
stored in FM format, in a single sector the 81st track of the diskette.
For fun I went through my collection of original DEC distribution
di
I'd gotten the impression that there was some angst in its community of
users
over something. I can't find now where I'd gotten that impression, though.
Mine
works great, and I've had no issues with it. They've been helpful when I've
reported
trouble I had using it, but it was pilot error on my par
On Sat, 23 Apr 2022, Bill Gunshannon via cctalk wrote:
Your right about all the available options. Somewhere around here I
have a couple of P112 SBC's. I wonder what the floppy controller in
that can do? I am pretty sure it claimed compatibility with CP/M 8"
disks. If so it can probably handl
On 4/23/22 07:16, Liam Proven wrote:
> On Fri, 22 Apr 2022 at 23:41, Chuck Guzis wrote:
>>
>> Take a look at the chip (DP8473) datasheet. It boasts direct (no
>> buffer needed) support of up to 4 drives. The rest is software; the
>> protocol is pretty much write some registers before/after
>>
On 4/22/22 21:48, Fred Cisin via cctalk wrote:
On Fri, 22 Apr 2022, Bill Gunshannon via cctalk wrote:
As another person with a desire to be able to read/write/create
disks of different sizes and formats I have found this interesting.
So the question, then
How hard would it be to make a flopp
Hi
I have a running stripboard prototype of a full size 8i lamp
board to go with my 8i front panels.
It uses the PiDP-8 software with Oscars agreement and encouragement.
There are no mods needed just plug in a Raspberry Pi running Oscars
version of SimH and it runs.
PCB
On Fri, 22 Apr 2022, "Maciej W. Rozycki" wrote:
You can of course build a PCI FDD interface around the NEC uPD765 or an
equivalent controller, but you can't make it compatible with existing PC
software, because too much PC specifics has been embedded there around the
8237 DMA controller and DMA p
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