![]() The biggest challenge was the fact the media was physically in bad shape, and it seemed highly unlikely to me that a full recovery would be possible.ĭespite explaining this, the reader still wished for me to give them a try with the Kryoflux to see if anything could be recovered from them, as there was nothing to be lost. This is something the Kryoflux (and indeed, most regular floppy drives) can handle in regards to making direct images and writing a copy. Unfortunately for them, the disks proved to be unreadable.Īfter a few back and forth messages, I established that the disks were likely to be physically recorded in MFM format with IBM-style geometry on High Density (HD) media, but with a custom filesystem that needed the use of a custom program to handle the files on the disk. In the case of their lathe, this was on a set of five floppy disks (but alternatively, could be from paper tape or even audio cassette). ![]() Restoring the machine to function requires reloading this program from an initial program load (IPL) source. Every five years, the battery needs to be replaced (or when it goes dead) and the program is lost from memory. ![]() Owing to the age of the equipment, the control program is loaded into volatile SRAM, backed-up by a battery. In mid-January this year, a reader contacted me regarding their set of control floppies for an Okuma CNC lathe.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |