Search found 72 matches

by Darkstar
Tue Oct 11, 2011 7:16 pm
Forum: Feature Requests
Topic: Far out (useless?) idea: QIC-117 ("floppy tape") support.
Replies: 20
Views: 7683

Re: Far out (useless?) idea: QIC-117 ("floppy tape") support

I think I also have one or two of these tape units lying around here, as well as a couple of tapes. Would have to take a look for the exact maker/model. Also tapes, I could lend everything (if I actually find 2 tape drives I could even give away one for good) to KryoFlux, especially if there's a cha...
by Darkstar
Fri Jul 15, 2011 7:43 pm
Forum: News
Topic: IPF and Openness
Replies: 154
Views: 62812

Re: IPF and Openness

Hi, I have to rant a bit here about IPF and openness, but I keep reading about that in various forums and mostly people tell other prospective users who want to dump their disks for preservation to "stay away from KryoFlux". So why is that? I don't think the attitude KryoFlux is presenting wrt. open...
by Darkstar
Wed Feb 23, 2011 11:46 am
Forum: Feature Requests
Topic: Bad sector repair
Replies: 7
Views: 2803

Re: Bad sector repair

Just for the record, I didn't suggest using the CRC to somehow recover sector-data. I merely wanted to be able to do like 500 reads and then do a simple byte-wise "majority vote" of the 500 copies of the sector. I admit it will probably only work in sector-dump mode (not in stream dump mode) but I'd...
by Darkstar
Thu Feb 10, 2011 9:21 am
Forum: News
Topic: IPF and Openness
Replies: 154
Views: 62812

Re: IPF and Openness

Go with the MAME license then. It has had some testing and seems to work pretty well (i.e. they shut down some projects in the past)

You might want to consult with an open-source lawyer (or at least someone knowledgeable, like the guys behind gpl-violations.org) though

-Darkstar
by Darkstar
Tue Jan 18, 2011 10:40 pm
Forum: Support
Topic: Stream file layout documented ?
Replies: 7
Views: 2229

Re: Stream file layout documented ?

If you plot a histogram of the bytes inside the stream file you will notice what it really is: raw timings of flux reversals. I don't yet know what timebase they're in, but in reality the absolute values are not really important, you can "lock" onto the stream and decode it with a simple software fi...
by Darkstar
Tue Nov 09, 2010 10:57 pm
Forum: Feature Requests
Topic: Bad sector repair
Replies: 7
Views: 2803

Bad sector repair

Sometimes it can't be helped, even with -t999 I still get this from time to time: 64.1 : MFM: <error>, trk: 064, sec: 18, bad: 1 64.1 : Bad sector found 64.1 : Read operation failed Since chances are that on those 999 passes, that one sector that is marked "bad" was partially correct in different po...
by Darkstar
Tue Nov 09, 2010 10:16 pm
Forum: Support
Topic: Disk signature on "pre-formatted" disks
Replies: 3
Views: 1424

Disk signature on "pre-formatted" disks

Hi, I was dumping a few old disks with my stuff on it today, and I discovered that strangely, one of the dumps had a different size than all the others (1.492.992 bytes instead of 1.474.560) which is exactly 1 track, 2 sides, 18sectors/track more than a "regular" dump. The additional track was fille...
by Darkstar
Tue Nov 09, 2010 10:04 pm
Forum: Feature Requests
Topic: Periodically reposition head after X failed tracks
Replies: 1
Views: 1144

Periodically reposition head after X failed tracks

I'm having the following phenomenon from time to time: I'm dumping with -t999 for some disks where I really only need a sector-dump. Sometimes, the drive keeps retrying again and again for a few tracks. I often find that, when I abort the dump with Ctrl-C and re-start it, on the second run each trac...
by Darkstar
Tue Nov 09, 2010 8:55 pm
Forum: Support
Topic: Dumping 2-sided C64 disks
Replies: 47
Views: 14118

Re: Dumping 2-sided C64 disks

Correct me if I'm wrong, but if I do dump the "flip side" separately and make sure that I do get an index signal with it, wouldn't this be a "perfect" dump with resepct to alignment between "front" and "back" side of the floppy? Because I have the index signal exactly as it passes through the index ...
by Darkstar
Mon Nov 08, 2010 7:43 pm
Forum: Support
Topic: Dumping 2-sided C64 disks
Replies: 47
Views: 14118

Dumping 2-sided C64 disks

Hi, about the "flippy" disk dumping support: What exactly is needed (minimum) to reliably do a forensic dump of these? Since I guess it's rather difficult to make a disk drive step to track -8, it would probably be easier to manually flip them and dump each side seperately. For this to work, I guess...