; After doing a "real" format of a three inch floppy diskette, the first
; cylinder will contain the boot record, FATS and so on.  The *rest* of the
; diskette should contain 0xF6 bytes.  This .CDU file tests whether the floppy
; is completely readable *and* whether the area that should contain 0xF6 really
; *does*...

; No disk writing is done so we can afford to dispense with the silly
; questions.

confirm off

; For the first two tracks (that is one cylinder), we merely check that we can
; *read* the data thereon.  We only "bleat" if we have any trouble reading the
; data.

sound on_error

; Note that copying to the BYTE device is treated as a request to discard the
; data sent.  That is, the BYTE device as an output is treated as a "byte
; bucket".

copy disk fd0 range start:+36 to byte 0

; Given that the first cylinder was OK, the *rest* of the diskette should
; contain 0xF6 bytes. We enable sounds because *whatever* the result of this
; COMPARE, we want it to make a noise.

sound on

; Actually *do* the compare.  The OFFSET makes sure we skip the stuff that
; should *not* be filled with 0xF6.

compare disk fd0 offset 36 with byte 0xF6