WOHL%cmu-cs-c@sri-unix.UUCP (06/12/83)
In writing controller software for a 1791 controller I used the read entire track (including gaps and format information) to make sure that I wrote the format code correctly. Using 8 1K byte sectors per track I noticed that there was enough space left after the last sector for another one. This gives an additional 144K bytes (77 tracks*2 sides*1024 bytes). I tried it and it works fine, the only change needed besides the format module was to change the diskdef macro in my bios to say '1,72' sectors rather than '1,64'. Why do the comercialy available 1K sector implementations use 8 sectors/track? Aaron -------