Re: [fuse-emulator-devel] cannot format single side TRDOS disk

[Cygnus <cy...@po...>]

Dne 17. 11. 21 v 12:33 Alan Cox napsal(a):
>> Why is in emulator option "Flip disk"? It doesn't make sense for me.
>> Real Betadisk is using normal disk drives and normal disks with only one
>> index hole and one write protect notch, it is not like on Commodore C64
>> or Atari etc...
> Some of the other disk types are flippable. In particular 3" disks were
> flippable so if you have a 3" drive attached to your system it makes
> total sense.
>
> (In some cases it's also possible to punch a second write protect hole in
> a 5.25" disk and that was sufficient on many systems)
>
> Alan
>
Yes, you are right, it is theoretically possible, but i never saw 
Betadisk with other than 3.5" or 5.25" drive. In one old article from 
1989 was mentioned 8" drive as possibility, but in real life no one used 
it (i remember it needed different crystal in clock oscillator for 
WD1793). 3" drives with Betadisk are probably even more rare.

I am using Betadisk maybe 30 years and during that time, most users from 
i heard about, had standard 3.5" or 5.25" drive double sided with 80 
tracks. In my experience it is definitely the most used configuration. 
So i understand it is the one which is emulated and preferred.

But i was just surprised when i discovered, so smaller 160kB or 320kB 
disk image cannot be saved, only 640kB can be. That's all.

I don't expect many users which will ever need it. I just tried it only 
during debugging one of my programs for which i need all disk format 
variants. No problem debug it on real hardware.


Btw... i really appreciated the possibility get data transmitted through 
ZXS 128k serial port into file (printout.txt). It was unexpected, but 
already several times very useful.



Thanks
Cygnus