Latest DiscFerret beta software

... And now it does Speedgraph analysis and peak display too: http://i162.photobucket.com/albums/t242/philpem/Screenshot-1-2.png That's a partial image of a TRS-80/4 floppy. The logarithmic histogram shows that there's a good separation between the various timing 'zones', which means it should be fairly easy to get a good read from this disc. The scatter plot shows similar gaps between the timing lines, further emphasising this point. The three peaks on the histogram suggest MFM coding, with a base time period of around a microsecond. This gives a data rate of ~250kbps. Moving onto the scatter plot, you can see what appears to be nine distinct sectors. The first three are apparently blank (0xFF), with data in the remaining six. From the speed graph, the 'cut points' (inter-sector gaps) between the sectors are even more obvious as fuzzy 'blobs' with large spikes at the transition points. So there you have it :) I'm going to add a few more file formats to the image loader, give the read tool the ability to actually *write* something, then you can all have a play with these lovely little toys :) Cheers, -- Phil. classiccmp at philpem.me.uk http://www.philpem.me.uk/