I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like to make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a 5,25" drive to WinXP computer.
Mantas <mantas@universe-trinti.lt> wrote:
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like
to
make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a 5,25"
drive to WinXP computer.
Are they 5.25" floppies? Do you know how the drive was connected?
The only Spectrum with a floppy port was the +3.
There were third party interfaces that presumably had an FDC chip.
There was no common Spectrum DOS, so as I understood it every interface manufacturer did their own thing, with their own on-disc format.
Apparently
TR-DOS was popular in the USSR.
My point being you need to know how the interface lays out the
tracks before you can image a floppy.
If it is TR-DOS, there are some tools to make images using a PC here: https://speccy.xyz/trdos.html
Theo
That's how they look: https://photos.app.goo.gl/BHWAm4bg484SWsRPA
Yes, they are 5,25".
The drive is integrated in the same case as ZX-Spectrum clone. The computer is working, but I want to backup the disks before trying anything.
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like
to make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a
5,25" drive to WinXP computer.
How should I proceed without damaging the disks:
1.. To make a RAW disk image (and later copy to another disk)
2.. Browse the software/run on an emulator
Thanks!
Il 13/01/21 19:56, Giuseppe³ ha scritto:
Il 12/01/21 11:42, Mantas ha scritto:
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would
like to make backups (if they are still readable).
I've take a look to the link and saw the disk photo.
A question is: Are these disk DS=Double side QD= Quad density???
I think that with a PC floppy drive you can only read Single or Double density (180/360K) or High density (1.2M).
Il 12/01/21 11:42, Mantas ha scritto:
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would
like to make backups (if they are still readable).
Il 13/01/21 20:01, Giuseppe³ ha scritto:
Il 13/01/21 19:56, Giuseppe³ ha scritto:
Il 12/01/21 11:42, Mantas ha scritto:
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like >>>> to make backups (if they are still readable).
I've take a look to the link and saw the disk photo.
A question is: Are these disk DS=Double side QD= Quad density???
I think that with a PC floppy drive you can only read Single or Double
density (180/360K) or High density (1.2M).
Looking at these datas:
https://en.wikipedia.org/wiki/Disk_density
Maybe you can read the QD disk using a 1.2M floppy drive and teledisk, but the problem will be write the image on a new disk.
Unfortunately I have no idea what kind of floppies those are.
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like
to make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a
5,25" drive to WinXP computer.
How should I proceed without damaging the disks:
1.. To make a RAW disk image (and later copy to another disk)
2.. Browse the software/run on an emulator
Thanks!
Mantas wrote:
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like
to make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a 5,25"
drive to WinXP computer.
How should I proceed without damaging the disks:
1.. To make a RAW disk image (and later copy to another disk)
2.. Browse the software/run on an emulator
Thanks!
I would connect it to the winxp
and use DD (Disk Dump) http://www.chrysocome.net/dd
That will create 100% same images from the floppies.
Then I would also do a copy /a (copy /? I think that's how it's done in
DOS) to copy all files into a folder and zip it up.
That's how I did my VC++ 20 disks https://archive.org/details/MicrosoftVisualStudioC1.01993
----------
http://mgarcia.org/
Il 14/01/21 12:14, Mantas ha scritto:
Unfortunately I have no idea what kind of floppies those are.
At the top of the disk label I can read "DS QD".
Is it correct?
If yes them are Double side/Quad density.
I never saw it before :)
Regards
I would connect it to the winxp
and use DD (Disk Dump) http://www.chrysocome.net/dd
That will create 100% same images from the floppies.
Mike Garcia <mike@mgarcia.nospam> wrote:
I would connect it to the winxp and use DD (Disk Dump)
http://www.chrysocome.net/dd That will create 100% same images from the
floppies.
That doesn't appear to handle floppies with sector numbering or track
layout that isn't the same as DOS uses. For example, I doubt it will
handle discs with sectors numbered from zero (as some retrocomputers do) instead of one (as DOS does).
Apparently:
https://sinclair.wiki.zxnet.co.uk/wiki/TR-DOS_filesystem TR-DOS floppies
are 40 or 80 track, 16 sectors per track, 256 byte sectors (it appears
to only refer to sectors 1 to 15, so it's unclear how sector numbering works). I'm not sure how that handles quad-density floppies, but
presumably the same disc layout but with more sectors per track.
Meanwhile, the PC 1.2MB floppy uses 80 tracks, 512 byte sectors, and 15 sectors per track.
https://en.wikipedia.org/wiki/List_of_floppy_disk_formats
These formats are incompatible. I think it is possible to program
Windows XP to read a different layout of floppy disc if you install a suitable driver (it's easier on DOS or Windows 9x), but you won't be
able to simply image them with regular tools.
Theo
On Mon, 18 Jan 2021 22:28:40 +0000, Theo wrote:
Mike Garcia <mike@mgarcia.nospam> wrote:
I would connect it to the winxp and use DD (Disk Dump)
http://www.chrysocome.net/dd That will create 100% same images from the
floppies.
That doesn't appear to handle floppies with sector numbering or track
layout that isn't the same as DOS uses. For example, I doubt it will
handle discs with sectors numbered from zero (as some retrocomputers do)
instead of one (as DOS does).
Apparently:
https://sinclair.wiki.zxnet.co.uk/wiki/TR-DOS_filesystem TR-DOS floppies
are 40 or 80 track, 16 sectors per track, 256 byte sectors (it appears
to only refer to sectors 1 to 15, so it's unclear how sector numbering
works). I'm not sure how that handles quad-density floppies, but
presumably the same disc layout but with more sectors per track.
Meanwhile, the PC 1.2MB floppy uses 80 tracks, 512 byte sectors, and 15
sectors per track.
https://en.wikipedia.org/wiki/List_of_floppy_disk_formats
These formats are incompatible. I think it is possible to program
Windows XP to read a different layout of floppy disc if you install a
suitable driver (it's easier on DOS or Windows 9x), but you won't be
able to simply image them with regular tools.
Theo
oh thought I read he has a XP machine...
If it's a DOS/XP issue, maybe making a boot USB/CD/floppy and using linux will provide the correct drivers for that floppy?
--
Mike Garcia
http://mgarcia.org
I can use any OS on PC really.
oh thought I read he has a XP machine...
If it's a DOS/XP issue, maybe making a boot USB/CD/floppy and using linux
will provide the correct drivers for that floppy?
--
Mike Garcia
http://mgarcia.org
Hi Mantas,
I never made copy of Sinclair diskette, but I did on some Olivetti fdd.
At the time the most useful software was the CopyQM that was able to make (with its BLIND COPY feature) track-by-track copy including hiding
sectors,
track zero, and even errors (a way to protect original software) to allow
a
perfect replica of the floppy.
The only problem is that it cannot work on windows/emulated environment,
as
these are masking the direct access to the hardware, avoiding any “custom”
instruction to the fdd
So only DOS on a x86 machine (286/386/486)
Mantas <mantas@universe-trinti.lt> wrote:
I can use any OS on PC really.
oh thought I read he has a XP machine...
If it's a DOS/XP issue, maybe making a boot USB/CD/floppy and using
linux
will provide the correct drivers for that floppy?
--
Mike Garcia
http://mgarcia.org
I have 2 floppy disks from a Lithuanian ZX-Spectrum clone. I would like to >make backups (if they are still readable).
I have a 386 with MS-DOS and Win 3.11 and if needed I can connect a 5,25" drive to WinXP computer.
How should I proceed without damaging the disks:
1.. To make a RAW disk image (and later copy to another disk)
2.. Browse the software/run on an emulator
Thanks!
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