That is very cool! Do you have a link to the actual project.
On Sat, Mar 20, 2021, at 5:25 PM, Brian K. White wrote:
> Someone else is just finishing a different approach where he designed a
> custom board with everything including the mcu.
>
>
On 3/20/21 7:56 PM, Darren Clark wrote:
I think an Arduino (328P) would have enough horsepower to emulate the
TPPD protocol and read/write to a SD card. Could probably even burn the
utilities disk image to the 328P and start it up in "utilities" mode to
download the disk manager to the 100 or
I think an Arduino (328P) would have enough horsepower to emulate the
TPPD protocol and read/write to a SD card. Could probably even burn the
utilities disk image to the 328P and start it up in "utilities" mode to
download the disk manager to the 100 or 200.
On 3/20/21 6:58 AM, Stephen
Hello Charles, Stephen,
I would be interested in a TPDD-2 PCB. FYI, the processor would
have to be un-soldered from the PCB and soldered to another PCB
(break-out board) to address the new external memory and be able to
glitch the power, clock, and mode pins. But I would be more than
ah ok thanks
On Sat, Mar 20, 2021, 9:59 AM Jeffrey Birt wrote:
> It is not that it is just ‘less sensitive’. I’m really stretching my
> memory from the research I did on the subject here but as I recall the
> composition of the coating of the disk is different (something like the
> particle
It is not that it is just ‘less sensitive’. I’m really stretching my memory
from the research I did on the subject here but as I recall the composition of
the coating of the disk is different (something like the particle size of the
ferrous material being smaller). To flip the domain on this
Not that it changes anything, but I thought the problem with the density
difference was that the lower density drive would put out a stronger signal
needed for the less sensitive media, and so the problem with using hd media
in a dd drive would be that the dd drive would overdrive the media making
Oh, sorry I misread what you wrote. But to your point, that could be done. I
use a SuperCard Pro to image floppies which is just a PIC uC with supporting HW
and some spiffy firmware/software. It can image TPDD1/2 disks easily using a
standard 3.5” 1.44MB drive. The software does know how to
not exactly the point I was trying to make.
pretty clearly a TPDD1 cannot use an HD floppy.
but a small microcontroller that speaks TPDD protocol and has integrated
FDC function could interface with a modern FDD.
..steve
On Sat, Mar 20, 2021 at 8:20 AM Jeffrey Birt wrote:
> High density disks,
High density disks, both 3.5 and 5.25, require a much higher flux level to
write. A system designed for DD disks will not be able to write to them
reliably. Some folks have tried HD 3.5” disks in an Amiga or Mac for example
only to find that it reads for a while but after a few weeks or months
this is quite interesting, and nice detective work.
It would seem like an interesting use case here could be to modify this
firmware to make it target a standard 1.44MB floppy disk drive.
Maybe it would seem a bit backwards because SD cards are more mainstream,
but still interesting to think
Darren, Stephen:
I have a TPDD-1 and a TPDD-2. Both are basket cases. I had hoped to
resurrect one or the other but in the interest of the general good you are
welcome to cannibalize either, on condition that you at least return the
parts to me when you are finished.
If you are interested you
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