Myron-Meier@cup.portal.com (Myron R Meier) (10/23/89)
I'm trying to add a track cache to the floppy driver for MINIX 1.2 and I was wondering if the Floppy Disk Controller (FDC) in an IBM AT is capable of reading a whole track, or maybe even two, at a time. I'm afraid I don't have access to any technical information on the FDC but I've been trying as best I can to decode from the MINIX source code how to tell it how many sectors to read. As far as I can gather, the len array encodes how many sectors to read given a particular sector size, but it doesn't seem to extent far enough for a whole track (7680 bytes on a 1.2M floppy) and some of the possible sector sizes seem rather odd (896 bytes?) Any help in this area will be GREATLY appreciated. Thanks in advance, Myron Myron-Meier@cup.portal.com