Search found 32 matches

by JasonCA
Thu Jun 21, 2018 6:23 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

I've not been able to find any documentation on what "bad" and "mis" mean? Here's a sample of a bad track: 08.0 : CBM DOS: <error>, trk: 005, sec: 21, bad: 8, mis: 8, *H 08.0 : CBM DOS: <error>, trk: 005, sec: 21, bad: 8, mis: 8, *H 08.0 : CBM DOS: <error>, trk: 005, sec: 21, bad: 8, mis: 8, *H 08.0...
by JasonCA
Sat Jun 09, 2018 9:12 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

Using the Flippy and Double Sided dump commands, I'm still dumping disks so I have enough to play with. Question: What to do about the failed disks though? Does anyone have a rule of thumb for how the disks should be Re-Dumped when dumps have Bad Sectors found? Below are some useful links I've run a...
by JasonCA
Sat Jun 09, 2018 8:30 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

It's only the top bit on byte 3 in the BAM that matters. There have been fast formating programs (can't remember the name) which wrote something else to byte 3 for whatever reason. I'm not sure by now but could be GEOS which wrote 0x2a to it (byte 3 was marked as "unused" in documentation for the 1...
by JasonCA
Sun Jun 03, 2018 10:47 pm
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

If you dump a real double sided disk as a flippy your options are to either redump it as normal disk of rename the side 1 streamfiles as they're now misaligned by 8 tracks (which also makes you lose the last 8 tracks of that side, if those were used). That's great! At least now I know I have an opt...
by JasonCA
Sun Jun 03, 2018 10:22 pm
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

In observation, I have noticed that in a lot of my dumps I either get the following for Track 18 Byte 3 in the BAM: 0x00 - Single sided disk 0x80 - Double sided disk 0x2A - ????? :o In looking into this, I've not been able to find any information as to why 0x2A is often found at Track 18 Byte 3. How...
by JasonCA
Sun Jun 03, 2018 10:14 pm
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

I've regularly mix and matched .raw tracks without problem. For example, I use a batch file to remove the odd track numbers from copies of low-density 5.25" dumps made on 80 track 96TPI 1.2mb drives so I can write them on a 40 track 48TPI 360k drive. Now that I know it's possible, I'll look forward...
by JasonCA
Wed May 30, 2018 6:54 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

mr.vince wrote:
Tue May 29, 2018 7:46 pm
For the avoidance of doubt: what kind of flippy mod is this? Panasonic or Newtronics?
:arrow: Panasonic
by JasonCA
Wed May 30, 2018 6:53 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

I don't have a flippy modded drive, so do not know exactly how this would work, but if you are saving a stream file while generating the .g64/.d64 file from this then it looks like you are using a "guided" stream dump. That has some differences from a preservation stream dump. For one, it looks lik...
by JasonCA
Wed May 30, 2018 5:52 am
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

I'm sorry to repeat myself again, but don't forget, that the drive is spinning the wrong direction on the second side if you read a flippy disk in a dual head drive (without flipping it). So the data-stream has to be corrected (turned reverse) directly after you read a single track from the second ...
by JasonCA
Sun May 27, 2018 8:40 pm
Forum: Support
Topic: Kryoflux Flippy Disk Preservation Commands
Replies: 42
Views: 2479

Re: Kryoflux Flippy Disk Preservation Commands

If I get this right you have a problem with the relative physical offset. This can't be changed later on, as you're setting the range when you are dumping the disk. I don't see how one could readjust tracks; you're dumping e.g. 80 tracks and you start relative to the original TRK00 signal. Yes, I m...