How to write sector number F7 to disk on a spec?

ZXNet echo conference «code.zx»

From Kirill Frolov To All 20 February 2002

Press RESET immediately, All! subj?

From Stanislav Udin To Kirill Frolov 25 February 2002

Hello Kirill! 20 Feb 02 01:57, Kirill Frolov -> All: KF> subj? Only the way it is done in ZX-Format. There the sector with number #F7 is the result of the checksum. Stanislav