Make DSK image from protected floppy

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Van mars2000you

Enlighted (5512)

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13-05-2012, 00:10

I think Galf Streem by Xain has a very hard protection on disk one (maybe also the other disks), as the dumps available on the net are generally very bad.

Van Manuel

Ascended (15750)

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13-05-2012, 00:17

Too bad I don't have that disk. If someone does, he can help to test it... just contact me.

Anything else?

Van mars2000you

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13-05-2012, 00:36

There was a Dutch video utility for NMS8280 with a very hard protection, but I don't remember the name.

Maybe Superimpose & Video version 1 by Oasis ....

Van mister.phr0zen

Expert (102)

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13-05-2012, 03:42

In the "golden era", I developed together with a friend many routines to copy and to protect disks, using special formatting and manipulating crc errors and sector sizes.
Days ago, I started reading my codes, so I can make a way to generate some image from the protected disks.
I will read more about DMK format to adapt my routines.
Happily 90% of brazilian disk drive interfaces are WD2793 based Wink

Van Manuel

Ascended (15750)

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13-05-2012, 09:39

mars: if you mean Demo Kit and Picture Kit by NewVision Benelux, I already tried them. They gave quite some problems indeed, but they can be dumped and run now. I'll also try TurboWipe and VideoBench, but I think they have the same protection scheme.

mister.phr0zen: why would you adapt your routines? If you have disks with the routines applied, they can be dumped and run in openMSX...

Currently the dumping tool only runs on Philips-type WD2793 FDC's with double sided drives. This means Philips and Sony MSX models only. Sharp-Epcom HB-3600 may also work, but it's 5.25", and we've never tested that.

If useful, Wouter might expand this a bit (different connection schemes), but only WD2793 will be supported.

Van wernerkai

Champion (357)

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13-05-2012, 22:21

Using a 486 PC, I sucessfully made a image of a "locked" disk, using ImageDisk from Dave Dunfield. And restored the image file to another disk just after.

http://www.dunfield.com/doswid/IMD.ZIP
http://www.dunfield.com/doswid/IMDSRC.ZIP

The Brazilian Disk Drive Interfaces all use the WD2793, but most are I/O mapped, and some are memory mapped. I have both types, and I have HB-3600.

Do you need some test ? Let me know if I can help.

Van Manuel

Ascended (15750)

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13-05-2012, 22:26

The tool that Wouter is developing runs on MSX only (no need for old PC's). The resulting files will be combined to a single dmk image on a PC.

Does your HB-3600 have 2 drives? (Current version needs 2 drives... but also that will probably be improved later.)

If you want to help testing, please join us on the openMSX irc channel, #openMSX on FreeNode.

Note that there have not been done any tests on 5.25" disk drives yet... so it may not work at all Smile There is no support yet for I/O mapped interfaces, but that will not be too hard to add, Wouter told me.

Van wernerkai

Champion (357)

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13-05-2012, 22:37

Yes, the HB-3600 was developed/sold with 5.25"drives, but 3.5" drives can be attached to it, by just changing the cables, or using connector adapters.

It may took a while to setup the whole thing, but I surely will help.

Regards,

Werner

Van supmsx

Master (155)

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14-05-2012, 20:31

I wandered what was exactly Galf Streem...now I know...and sure it was one of the toughest soft protection as Mars2000 said it

Van Manuel

Ascended (15750)

afbeelding van Manuel

14-05-2012, 22:36

If someone has the original disk of Galf Streem, please speak up here Smile

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