Dnia 00-03-18 Mac Buster pisze: > Its is possible to format track w/o any ID at all :) Right, is possible on 1793 type FDC, but not on 765A vel 8272 (the one used by IBM in its primitive computer).
> But you can not read them back =) Only with #E0 command in 1973 type FDC. Then you have to check CRC, because the data can be inverted. > But it is almost impossible to read disks with incorrect side > marks, etc. "Almost impossible" means it is possible, but not via INT 13h. > E.g. standard Beta 128 disk can't be readed w/o special tricks > (preliminaly formatting on PC and writting the data on Beta > 128, and reading image on PC). I had recently the same problem with TOS A.2 disks. But finally I made it without such special tricks. It would be better to fix format code in Beta 128... >> And of course you can't read GCR, but 1793 type controllers can't >> too (I think, but must try...). > May be GCR can be readed by "read track" and decoded manually > then ? That is what I meant. >> Heh, not always better. ;) > If you're working with standard disks only readed into . I use 820kB disks with my SAM... ;) With 1kB sectors. -- Yarek.
