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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 ...

Hi Ken, I have the file "nos9v303_d64COHR_becker.dsk" mounted as Disk0 in DriveWire Then I start XRoar without DDOS or with DDOS11C When I enter DLOAD"DOS" The screen shows the message "NITROS9 BOOT" But nothing happens on the screen, it simply hangs the computer. But ... if I do that with HDB-DOS i...

Hi Ken, pleased to hear from you again! I have downloaded all that info, I'm thinking of getting into that old project again. I will try to alternate it with The Hobbit conversion, where I have about 40% of work done. But there is still quite a lot of code to convert and test! cheers have a nice wee...

Back again, Jon I have started my Dragon (without drives) but connected to the PC via DriveWire. With drivewire having in slot0 the NitrOS-9 disk for DW, I pressed Shift to avoid autorun... Then DLOAD"DOS" has started NitrOS-9 without problems So I think there is some sort of uncompatibility with XR...

Hi Jon, I attach here the .bat file I use ... it's a bit special because I have all inside folders, but you will get the idea! cheers pere screen.jpg EDIT: All the tests I have made using any DOS different from HDB-DOS have failed (maybe I am doing something wrong, I don't know) It seems to me that ...

Hi Jon, I don't know much about OS-9/NitrOS-9, but what I have done is: In XRoar I have a bat file that loads a Dragon64 with HDB-DOS Before starting it, I start DriveWire putting a special NitrOS-9 disk in slot 0 Then I start the bat file and get the normal Dragon prompt Then I use: DLOAD"DOS this ...