[CFou!]

Originally Posted by BarryB

What about the v1 version with bad tracks on 72.1 and 73.1 on Disk 1, are they genuinely bad or not used?

no, just some sectors not formated because there was no data.

The last RAWDIC imager load only present sectors for this track.
See source code of imager here:
http://www.whdload.de/games/BodyBlows.lha

;======================================================================

; read track with missing sectors

_RN_PDos_11sect

moveq #7,d4 ;d4 = Sector to read by track
moveq #0,d7 ;d7 = Sector complete counter
move.l a0,a5 ;a5 = MFM data
move.l a1,a2 ;a2 = Destination
bra _NextSector

; read normal tracks

_RN_PDos

moveq #12,d4 ;d4 = Sector to read by track
moveq #0,d7 ;d7 = Sector complete counter
move.l a0,a5 ;a5 = MFM data
move.l a1,a2 ;a2 = Destination

_NextSector

cmpi.w #$4891,(a5) ;Check for word $4891 on each
bne _NoSector ;sector boundary

lea 2(a5),a0
move.l (a0)+,d0
move.l (a0)+,d1
and.l #$55555555,d0
and.l #$55555555,d1
add.l d0,d0
or.l d1,d0

move.l d6,d1 ;Disk key
bset #31,d1
eor.l d1,d0
move.l d0,d3 ;Checksum
swap d0
lsr.w #8,d0

lea $a(a5),a0
bsr _GetChecksum
cmp.w d0,d3
bne _ChecksumError
move.l a2,a1
bsr _DecodeData
lea $200(a2),a2

adda.w #$40a,a5
move.w (a5)+,d0
moveq #0,d1
moveq #7,d2

_Unwind

roxl.w #2,d0
roxl.b #1,d1
dbf d2,_Unwind

add.w d1,d1
adda.l d1,a5
addq.w #1,d7 ;Check if we have decoded
; cmpi.w #12,d7 ;all 12 sectors
cmp.w d4,d7 ;all 12 sectors
bne _NextSector

_OK

moveq #IERR_OK,d0
rts