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Hi Jon, last tests I have done were quite a nightmare! I did format a disk in my Dragon: DSKINIT1,1,80 and it created a 360K disk. When I sent it to DW4, I got a VDK that once opened with XRoar showed to be 360K too, great. But it had in the header the values $28,$02 (40 tracks, 2 sides) mainly beca...

One more observation (although it doesn't affect me because I don't have any disks in this format), your logic for setting the sectors/track to 36 on detection of a disk with 1440 sectors isn't correct for an 80T/SS disk. You are right, but I haven't used /tried any of this kind of disks. This 'spe...

Just out of curiosity, why do you need a 256 byte VDK header? Aren't the usual 12 bytes enough? Hi Roberto, I have three bat files to create VDKs that could be used with Drivewire, in this case the header length must be 256 bytes. But I have another three bats that simply add the 12 bytes header yo...

Hello Jon, I made the tests I promised. To be able to copy the original DSK files of the last NitrOS-9 version, I have added to them a 256 bytes VDK header with the geometry according to the VDK header rules, so that they are readable by DW4. Then I have copied the five disks (2x180k, 2x360k and 1x7...

Hi Jon, first of all, thanks a lot for sharing this wonderful piece of code. It is really very inspiring. I am sure that this would be the base to create a new dweeb to copy a single file from a VDK file into a floppy disk I have the Grosvenor DOS programmer's guide but had never used these special ...

Here's the relevant bit from one of the offending disks: 0000100: 0005 a012 00b4 0001 0000 1200 00ff add9 ................ 0000110: 0300 1200 0000 0000 0000 5806 0c11 0a50 ..........X....P These are the values found in the 'last version' of NitrOS-9 v3.3.0 for Dragon64: . . . . . . . . . . FILENAME...

Hi Tormod, this is the bat file I use to start XRoar without drives but wth Drivewire. ===================================================================== cd.. copy ..\XRoar\ROMs\d64rom1-dwload-becker-dragondos.rom d64_1.rom copy ..\XRoar\ROMs\d64rom2V31.rom d64_2.rom xroar -machine dragon64 -mach...

Hi Jon, it's fun to examine files searching for these bits and bobs. All of the disks 180k have $0002D0 as number of sectors and have offset $10 = 2 wich should mean Double density, but it is Single density, for sure! Disks type 360k have $0005A0 as number of sectors and have offset $10 = 3 wich sho...

thanks Jon, I will use this info for my V2FLO dweeb, but I am pretty sure that the physical disks must have right values in the three firts bytes because they cannot change of size! So if we have right now a problem with a floppy, probably there is something wrong in these three first bytes. I will ...

I have perused my PC folders in wich there are quite some OS-9 disks. All of the disks that are made to be used with a real Dragon or in XRoar, are DSK files that contain in offset 1-2 the number of sectors of the disk. But ... the ones ready to work with DW or with Becker (so, on the server side) h...