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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...

Hi Jon, first surprise, my NitrOS-9 DSK files have all of them these three initial bytes: $00 $48 $00 Whilst the 2 DSK I have (180k) that BOOT NitrOS-9, have these data: $00 $02 $D0 $02D0 means 720 sectors, so it is a single side single density disk (40 tracks x 18 sectors each) But $4800 equals 18,...

Hi Jon, I know there is a difference between double sided single density (360K) and single sided double density (360K too) but apparently they are treated right. The FLO2V dweeb knows the DOS disks and works with the OS9 ones looking to a few bytes. I will look at the source code and will copy here ...

Hello, I have some disks bigger than 180k that work perfect with XRoar-Becker and with the real Dragon-DW4: NitrOS-9 L1 v3.3.0 for Dragon 64 (6809) --- 720K NitrOS-9 L1 v3.3.0 for Dragon 64 (6809) --- 360K (the very same in a smaller disk) They both boot up without problems, so it seems that OS-9, N...

I will give this a try along this afternoon. But this should be no problem, then we could copy the whole disk to an VDK image and put it inthe Drivewire DISK folder, so it could be 'mounted' as a drive too I think that I used my FLO2V dweeb to copy OS-9 disks into VDK. The problem, buy now, with DW4...

Hi, Jon this could be a possibility, but then, why does a real Dragon 64 without any DOS start NitrOS-9 via Drivewire just with the command - DLOAD"DOS" - ? In this case it cannot access any internal routine ... but it works well. On the other hand, if I have the DOS and drives in my Dragon, it can ...