Marko Mäkelä wrote: > One of the most interesting programs is 71reads41back by Jochen Adler. > It didn't work reliably on my C128D, and the documentation says that it > can't read tracks 1 to 5. But anyway, this is very interesting: it is > possible to read the rear side of a single-sided disk without turning the > disk. I wonder when this will be the standard technique in two-sided > demos. :-) I tested this program for Jochen a while ago, and it worked well on my 1571. The reason why some tracks can't be read is that the head on the second side is set off by a few tracks against the head on the first side, and the mechanical stop prevents the head to go to these tracks. Anyway, it's a nice technique to read the directory on the second side without flipping over the disk :-) > There were also some interesting data transfer programs: cbm4linux (a Star > Commander like program with a kernel device driver) and Over5 (RS-232 cbm4linux is a classic already, and due to it's demand for an IRQ from a special line on the transfer cable it helped creating the new XM1541 and XA1541 variants quite some time ago. While the XM1541 is just a rewired XE1541, the XA1541 was already based on the new wiring. Really good that cbm4linux came just along while I was working on the XA1541 specification, or we would have yet another transfer cable :-/ Nicolas Message was sent through the cbm-hackers mailing list
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