Search found 41 matches

by drdanj
Thu Nov 24, 2016 12:02 pm
Forum: Dumping
Topic: Victor 9000 Disks
Replies: 16
Views: 2358

Re: Victor 9000 Disks

Hmm - the drive that wrote that CP/M disk was playing up a bit, but it does boot fine on the actual machine. I think my dumping drive is probably due a bit of head cleaning though...

Good work on getting some data out of it! It's quite encouraging!
by drdanj
Wed Nov 23, 2016 4:05 pm
Forum: Dumping
Topic: Victor 9000 Disks
Replies: 16
Views: 2358

Re: Victor 9000 Disks

I have software that I wrote that can decode RAW streams into bit-streams for a given RPM, I've just never updated it to deal with GCR or victor sync marks or anything. It's been on my to-do list for rather a long time. :D

The drive won't have read gibberish, I'm quite confident of that.
by drdanj
Wed Nov 23, 2016 8:36 am
Forum: Dumping
Topic: Victor 9000 Disks
Replies: 16
Views: 2358

Re: Victor 9000 Disks

:D - I don't think I explained what was bubbling through my brain properly. I was thinking more about whether there's enough information in the RAW format to "spin the track around" and adjust where the start/end are. Obviously though, now I think about it properly, there are 5 complete samples in a...
by drdanj
Tue Nov 22, 2016 7:57 pm
Forum: Dumping
Topic: Victor 9000 Disks
Replies: 16
Views: 2358

Re: Victor 9000 Disks

:D - these were my dumps. That does confirm my understanding of how it works though. The issue at the moment is decoding them and aligning the start/end of the track to somewhere where you're not going to end up with the splice in the middle of the data. Thinking about that, do the reads go index-in...
by drdanj
Thu Nov 17, 2016 9:23 am
Forum: Support
Topic: Connecting two 3,5" Drives causes strange errors
Replies: 8
Views: 1250

Re: Connecting two 3,5" Drives causes strange errors

I would get a new data cable - if both of the drives are arguing when they're both plugged in, for some reason they both think they're the same drive. And if this happens using various pairs of drives, the only likely culprit is the cable... The reason it works when you unplug a drive from the PSU i...
by drdanj
Mon Mar 16, 2015 10:21 am
Forum: Support
Topic: Trouble decoding BBC Micro disks
Replies: 9
Views: 2540

Re: Trouble decoding BBC Micro disks

Ah, it was probably a Molex-> Beeb Auxillary Power cable (6 pins in a rectangle) - glad you got it to work!

d.
by drdanj
Mon Mar 09, 2015 2:22 pm
Forum: Support
Topic: Trouble decoding BBC Micro disks
Replies: 9
Views: 2540

Re: Trouble decoding BBC Micro disks

Have a go with the GUI. If you look at the scatter plot of your dump, you can see that there are some spurious fluxes that have crept in - they also don't seem to be completely consistent between revolutions of the drive (this is me just eyeballing it, not actually looking in detail). They're sort o...
by drdanj
Mon Feb 23, 2015 7:41 pm
Forum: Support
Topic: Trouble decoding BBC Micro disks
Replies: 9
Views: 2540

Re: Trouble decoding BBC Micro disks

Hello Thomas, I've had no trouble getting dtc to create SSD images for the beeb via the GUI. Have you made sure your drive heads are clean? In the meantime, if you want to delve a bit deeper into what's going on with the images you've captured, I have some bits of code I wrote to deal with beeb/arch...
by drdanj
Fri Nov 28, 2014 3:28 pm
Forum: News
Topic: DTC Scripting & IPF creation
Replies: 15
Views: 6124

Re: DTC Scripting & IPF creation

Great to hear :) - not rushing you! :D

d.
by drdanj
Thu Nov 27, 2014 3:28 pm
Forum: News
Topic: DTC Scripting & IPF creation
Replies: 15
Views: 6124

Re: DTC Scripting & IPF creation

Despite the brilliant cloning option that's been introduced (thank you, it's saved some of my original key discs!), is the scripting still in the pipeline?