what does "MFM <Mismatch>" mean?

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Darkstar
Posts: 72
Joined: Thu Nov 04, 2010 7:58 pm

what does "MFM <Mismatch>" mean?

Post by Darkstar » Sun Sep 29, 2013 10:23 pm

I just dumped this disk. It looks like a single-sided 40 track disk, but all tracks come up as "mismatch", except track 0 and 82 (CopyWrite signature)

Code: Select all

KryoFlux DiskTool Console, v2.20, uiv.1, Feb 22 2013, 18:52:16
(c) 2009-2013 KryoFlux Products & Services Ltd.
Developed by The Software Preservation Society, www.softpres.org
Licensed for private, non-commercial use only.

00.0    : frev: 40680, drift: 0.117 us, tfer: 233138 B/s, rpm: 360.648
00.0    : base: 2.008 us [99.558%], band: 3.981 us, 6.023 us, 7.962 us
00.0    : MFM: OK*, trk: 000, sec: 8, *H +4
00.1    : frev: 49730, drift: 0.458 us, tfer: 285144 B/s, rpm: 360.643
00.1    : base: 2.010 us [32.812%], band: 4.021 us
00.1    : MFM: <unformatted>
02.0    : frev: 40966, drift: 0.524 us, tfer: 233971 B/s, rpm: 360.639
02.0    : base: 2.008 us [99.578%], band: 4.000 us, 6.025 us, 8.051 us
02.0    : MFM: <mismatch>, *N
02.1    : frev: 50044, drift: 0.158 us, tfer: 287894 B/s, rpm: 360.643
02.1    : base: 1.998 us [33.225%], band: 3.996 us
02.1    : MFM: <unformatted>
04.0    : frev: 40314, drift: 0.757 us, tfer: 230676 B/s, rpm: 360.639
04.0    : base: 2.007 us [99.792%], band: 3.989 us, 6.022 us, 8.004 us
04.0    : MFM: <mismatch>, *N
04.1    : frev: 49896, drift: 0.458 us, tfer: 286078 B/s, rpm: 360.639
04.1    : base: 2.004 us [33.144%], band: 4.008 us
04.1    : MFM: <unformatted>
06.0    : frev: 39020, drift: 0.075 us, tfer: 223590 B/s, rpm: 360.640
06.0    : base: 2.011 us [99.657%], band: 3.984 us, 6.032 us, 8.014 us
06.0    : MFM: <mismatch>, *N
06.1    : frev: 49942, drift: 0.142 us, tfer: 287333 B/s, rpm: 360.643
06.1    : base: 2.002 us [33.234%], band: 4.004 us
06.1    : MFM: <unformatted>
08.0    : frev: 39318, drift: 0.075 us, tfer: 225127 B/s, rpm: 360.636
08.0    : base: 2.011 us [99.537%], band: 3.987 us, 6.033 us, 8.037 us
08.0    : MFM: <mismatch>, *N
08.1    : frev: 49870, drift: 0.083 us, tfer: 286078 B/s, rpm: 360.637
08.1    : base: 2.005 us [33.089%], band: 4.010 us
08.1    : MFM: <unformatted>
10.0    : frev: 41484, drift: 0.083 us, tfer: 239094 B/s, rpm: 360.632
10.0    : base: 2.013 us [99.555%], band: 3.993 us, 6.039 us, 8.033 us
10.0    : MFM: <mismatch>, *N
10.1    : frev: 49894, drift: 0.566 us, tfer: 286078 B/s, rpm: 360.636
10.1    : base: 2.004 us [33.133%], band: 4.008 us
10.1    : MFM: <unformatted>
12.0    : frev: 42144, drift: 0.175 us, tfer: 241614 B/s, rpm: 360.637
12.0    : base: 2.007 us [99.715%], band: 3.983 us, 6.021 us, 7.987 us
12.0    : MFM: <mismatch>, *N
12.1    : frev: 49920, drift: 0.067 us, tfer: 287053 B/s, rpm: 360.637
12.1    : base: 2.003 us [33.190%], band: 4.006 us
12.1    : MFM: <unformatted>
14.0    : frev: 41038, drift: 0.108 us, tfer: 235090 B/s, rpm: 360.636
14.0    : base: 2.011 us [99.627%], band: 3.984 us, 6.032 us, 7.980 us
14.0    : MFM: <mismatch>, *N
14.1    : frev: 49978, drift: 0.150 us, tfer: 287613 B/s, rpm: 360.636
14.1    : base: 2.001 us [33.305%], band: 4.001 us
14.1    : MFM: <unformatted>
16.0    : frev: 41332, drift: 0.824 us, tfer: 236627 B/s, rpm: 360.637
16.0    : base: 2.009 us [99.706%], band: 3.990 us, 6.026 us, 8.018 us
16.0    : MFM: <mismatch>, *N
16.1    : frev: 49922, drift: 0.757 us, tfer: 287333 B/s, rpm: 360.636
16.1    : base: 2.003 us [33.189%], band: 4.006 us
16.1    : MFM: <unformatted>
18.0    : frev: 40032, drift: 0.108 us, tfer: 229330 B/s, rpm: 360.637
18.0    : base: 2.009 us [99.750%], band: 3.982 us, 6.026 us, 7.999 us
18.0    : MFM: <mismatch>, *N
18.1    : frev: 50026, drift: 0.741 us, tfer: 287894 B/s, rpm: 360.632
18.1    : base: 1.999 us [33.262%], band: 3.997 us
18.1    : MFM: <unformatted>
20.0    : frev: 40508, drift: 0.100 us, tfer: 231764 B/s, rpm: 360.634
20.0    : base: 2.011 us [99.613%], band: 3.992 us, 6.034 us, 8.028 us
20.0    : MFM: <mismatch>, *N
20.1    : frev: 49874, drift: 0.100 us, tfer: 287053 B/s, rpm: 360.632
20.1    : base: 2.005 us [33.098%], band: 4.009 us
20.1    : MFM: <unformatted>
22.0    : frev: 39646, drift: 0.716 us, tfer: 226685 B/s, rpm: 360.633
22.0    : base: 2.010 us [99.703%], band: 3.985 us, 6.031 us, 8.007 us
22.0    : MFM: <mismatch>, *N
22.1    : frev: 49864, drift: 0.241 us, tfer: 286774 B/s, rpm: 360.632
22.1    : base: 2.005 us [33.078%], band: 4.010 us
22.1    : MFM: <unformatted>
24.0    : frev: 39390, drift: 0.075 us, tfer: 225644 B/s, rpm: 360.629
24.0    : base: 2.008 us [99.743%], band: 3.983 us, 6.025 us, 7.995 us
24.0    : MFM: <mismatch>, *N
24.1    : frev: 49898, drift: 0.100 us, tfer: 286078 B/s, rpm: 360.631
24.1    : base: 2.004 us [33.151%], band: 4.007 us
24.1    : MFM: <unformatted>
26.0    : frev: 40510, drift: 0.100 us, tfer: 232037 B/s, rpm: 360.630
26.0    : base: 2.007 us [99.728%], band: 3.976 us, 6.020 us, 7.995 us
26.0    : MFM: <mismatch>, *N
26.1    : frev: 49800, drift: 0.158 us, tfer: 285455 B/s, rpm: 360.630
26.1    : base: 2.007 us [32.960%], band: 4.015 us
26.1    : MFM: <unformatted>
28.0    : frev: 41038, drift: 0.691 us, tfer: 234529 B/s, rpm: 360.632
28.0    : base: 2.007 us [99.707%], band: 3.982 us, 6.020 us, 7.985 us
28.0    : MFM: <mismatch>, *N
28.1    : frev: 50022, drift: 0.175 us, tfer: 287894 B/s, rpm: 360.631
28.1    : base: 1.999 us [33.272%], band: 3.998 us
28.1    : MFM: <unformatted>
30.0    : frev: 40164, drift: 0.166 us, tfer: 229866 B/s, rpm: 360.629
30.0    : base: 2.010 us [99.619%], band: 3.992 us, 6.031 us, 8.029 us
30.0    : MFM: <mismatch>, *N
30.1    : frev: 49900, drift: 0.033 us, tfer: 286078 B/s, rpm: 360.630
30.1    : base: 2.003 us [33.161%], band: 4.007 us
30.1    : MFM: <unformatted>
32.0    : frev: 40196, drift: 0.100 us, tfer: 230135 B/s, rpm: 360.631
32.0    : base: 2.011 us [99.547%], band: 3.980 us, 6.032 us, 8.029 us
32.0    : MFM: <mismatch>, *N
32.1    : frev: 50128, drift: 0.108 us, tfer: 288457 B/s, rpm: 360.632
32.1    : base: 1.994 us [33.051%], band: 3.989 us
32.1    : MFM: <unformatted>
34.0    : frev: 40566, drift: 0.158 us, tfer: 232037 B/s, rpm: 360.634
34.0    : base: 2.008 us [99.627%], band: 3.992 us, 6.024 us, 8.035 us
34.0    : MFM: <mismatch>, *N
34.1    : frev: 49912, drift: 0.441 us, tfer: 287053 B/s, rpm: 360.630
34.1    : base: 2.003 us [33.176%], band: 4.006 us
34.1    : MFM: <unformatted>
36.0    : frev: 40308, drift: 0.075 us, tfer: 230405 B/s, rpm: 360.631
36.0    : base: 2.006 us [99.796%], band: 3.984 us, 6.017 us, 8.003 us
36.0    : MFM: <mismatch>, *N
36.1    : frev: 50002, drift: 0.291 us, tfer: 287613 B/s, rpm: 360.634
36.1    : base: 1.999 us [33.302%], band: 3.999 us
36.1    : MFM: <unformatted>
38.0    : frev: 39960, drift: 0.175 us, tfer: 228796 B/s, rpm: 360.628
38.0    : base: 2.010 us [99.642%], band: 3.991 us, 6.029 us, 8.027 us
38.0    : MFM: <mismatch>, *N
38.1    : frev: 49882, drift: 0.649 us, tfer: 287053 B/s, rpm: 360.632
38.1    : base: 2.004 us [33.117%], band: 4.009 us
38.1    : MFM: <unformatted>
40.0    : frev: 39846, drift: 0.125 us, tfer: 228000 B/s, rpm: 360.630
40.0    : base: 2.007 us [99.662%], band: 3.986 us, 6.021 us, 8.026 us
40.0    : MFM: <mismatch>, *N
40.1    : frev: 49932, drift: 0.100 us, tfer: 287333 B/s, rpm: 360.628
40.1    : base: 2.002 us [33.215%], band: 4.005 us
40.1    : MFM: <unformatted>
42.0    : frev: 40450, drift: 0.882 us, tfer: 231491 B/s, rpm: 360.632
42.0    : base: 2.008 us [99.678%], band: 3.991 us, 6.023 us, 8.025 us
42.0    : MFM: <mismatch>, *N
42.1    : frev: 49893, drift: 0.807 us, tfer: 287053 B/s, rpm: 360.632
42.1    : base: 2.004 us [33.140%], band: 4.008 us
42.1    : MFM: <unformatted>
44.0    : frev: 40490, drift: 0.142 us, tfer: 231491 B/s, rpm: 360.628
44.0    : base: 2.011 us [99.572%], band: 3.995 us, 6.032 us, 8.040 us
44.0    : MFM: <mismatch>, *N
44.1    : frev: 49916, drift: 0.941 us, tfer: 287053 B/s, rpm: 360.629
44.1    : base: 2.003 us [33.182%], band: 4.006 us
44.1    : MFM: <unformatted>
46.0    : frev: 40094, drift: 0.125 us, tfer: 229598 B/s, rpm: 360.634
46.0    : base: 2.008 us [99.720%], band: 3.981 us, 6.024 us, 8.008 us
46.0    : MFM: <mismatch>, *N
46.1    : frev: 49812, drift: 0.092 us, tfer: 285766 B/s, rpm: 360.631
46.1    : base: 2.007 us [32.973%], band: 4.014 us
46.1    : MFM: <unformatted>
48.0    : frev: 42160, drift: 0.067 us, tfer: 242894 B/s, rpm: 360.633
48.0    : base: 2.006 us [99.707%], band: 4.012 us, 6.019 us, 8.021 us
48.0    : MFM: <mismatch>, *N
48.1    : frev: 49950, drift: 0.125 us, tfer: 287333 B/s, rpm: 360.631
48.1    : base: 2.002 us [33.251%], band: 4.003 us
48.1    : MFM: <unformatted>
50.0    : frev: 44068, drift: 0.757 us, tfer: 252246 B/s, rpm: 360.630
50.0    : base: 2.013 us [99.725%], band: 4.000 us, 6.038 us, 8.011 us
50.0    : MFM: <mismatch>, *N
50.1    : frev: 49876, drift: 0.142 us, tfer: 286078 B/s, rpm: 360.629
50.1    : base: 2.005 us [33.101%], band: 4.009 us
50.1    : MFM: <unformatted>
52.0    : frev: 45760, drift: 0.050 us, tfer: 262048 B/s, rpm: 360.631
52.0    : base: 2.014 us [99.643%], band: 4.001 us, 6.042 us, 8.021 us
52.0    : MFM: <mismatch>, *N
52.1    : frev: 49906, drift: 0.599 us, tfer: 287053 B/s, rpm: 360.629
52.1    : base: 2.003 us [33.159%], band: 4.007 us
52.1    : MFM: <unformatted>
54.0    : frev: 41256, drift: 0.108 us, tfer: 235937 B/s, rpm: 360.629
54.0    : base: 2.009 us [99.674%], band: 3.995 us, 6.026 us, 8.028 us
54.0    : MFM: <mismatch>, *N
54.1    : frev: 49892, drift: 0.100 us, tfer: 286078 B/s, rpm: 360.630
54.1    : base: 2.004 us [33.135%], band: 4.008 us
54.1    : MFM: <unformatted>
56.0    : frev: 39816, drift: 0.100 us, tfer: 228000 B/s, rpm: 360.630
56.0    : base: 2.009 us [99.732%], band: 3.986 us, 6.026 us, 8.009 us
56.0    : MFM: <mismatch>, *N
56.1    : frev: 49890, drift: 0.133 us, tfer: 287053 B/s, rpm: 360.631
56.1    : base: 2.004 us [33.133%], band: 4.008 us
56.1    : MFM: <unformatted>
58.0    : frev: 40257, drift: 0.050 us, tfer: 230405 B/s, rpm: 360.642
58.0    : base: 2.010 us [99.612%], band: 3.981 us, 6.031 us, 8.020 us
58.0    : MFM: <mismatch>, *N
58.1    : frev: 49896, drift: 0.142 us, tfer: 286078 B/s, rpm: 360.636
58.1    : base: 2.004 us [33.141%], band: 4.008 us
58.1    : MFM: <unformatted>
60.0    : frev: 42848, drift: 0.150 us, tfer: 246021 B/s, rpm: 360.638
60.0    : base: 2.010 us [99.055%], band: 3.925 us, 6.029 us, 8.066 us?
60.0    : MFM: <mismatch>, *N
60.1    : frev: 49892, drift: 0.117 us, tfer: 287053 B/s, rpm: 360.637
60.1    : base: 2.004 us [33.136%], band: 4.008 us
60.1    : MFM: <unformatted>
62.0    : frev: 42339, drift: 0.832 us, tfer: 243409 B/s, rpm: 360.637
62.0    : base: 2.008 us [99.418%], band: 3.925 us, 6.023 us, 8.007 us
62.0    : MFM: <mismatch>, *N
62.1    : frev: 49924, drift: 0.666 us, tfer: 286078 B/s, rpm: 360.636
62.1    : base: 2.003 us [33.202%], band: 4.005 us
62.1    : MFM: <unformatted>
64.0    : frev: 40208, drift: 0.117 us, tfer: 230135 B/s, rpm: 360.637
64.0    : base: 2.010 us [99.699%], band: 3.987 us, 6.030 us, 8.012 us
64.0    : MFM: <mismatch>, *N
64.1    : frev: 49878, drift: 0.083 us, tfer: 286078 B/s, rpm: 360.639
64.1    : base: 2.004 us [33.114%], band: 4.009 us
64.1    : MFM: <unformatted>
66.0    : frev: 40170, drift: 0.092 us, tfer: 229598 B/s, rpm: 360.639
66.0    : base: 2.009 us [99.527%], band: 3.969 us, 6.026 us, 8.028 us
66.0    : MFM: <mismatch>, *N
66.1    : frev: 49910, drift: 0.108 us, tfer: 286078 B/s, rpm: 360.637
66.1    : base: 2.003 us [33.174%], band: 4.006 us
66.1    : MFM: <unformatted>
68.0    : frev: 38558, drift: 0.474 us, tfer: 220826 B/s, rpm: 360.641
68.0    : base: 2.005 us [99.671%], band: 3.977 us, 6.016 us, 8.021 us
68.0    : MFM: <mismatch>, *N
68.1    : frev: 49922, drift: 0.333 us, tfer: 286391 B/s, rpm: 360.637
68.1    : base: 2.003 us [33.202%], band: 4.005 us
68.1    : MFM: <unformatted>
70.0    : frev: 39462, drift: 0.100 us, tfer: 225903 B/s, rpm: 360.640
70.0    : base: 2.005 us [99.673%], band: 3.980 us, 6.014 us, 8.025 us
70.0    : MFM: <mismatch>, *N
70.1    : frev: 49952, drift: 0.142 us, tfer: 286391 B/s, rpm: 360.638
70.1    : base: 2.001 us [33.261%], band: 4.003 us
70.1    : MFM: <unformatted>
72.0    : frev: 42194, drift: 0.125 us, tfer: 242637 B/s, rpm: 360.639
72.0    : base: 2.008 us [99.212%], band: 3.947 us, 6.023 us, 8.065 us
72.0    : MFM: <mismatch>, *N
72.1    : frev: 49922, drift: 0.142 us, tfer: 287333 B/s, rpm: 360.639
72.1    : base: 2.003 us [33.201%], band: 4.005 us
72.1    : MFM: <unformatted>
74.0    : frev: 37700, drift: 0.191 us, tfer: 216211 B/s, rpm: 360.637
74.0    : base: 2.009 us [99.618%], band: 3.999 us, 6.028 us, 8.040 us
74.0    : MFM: <mismatch>, *N
74.1    : frev: 50008, drift: 0.757 us, tfer: 287613 B/s, rpm: 360.638
74.1    : base: 1.999 us [33.293%], band: 3.998 us
74.1    : MFM: <unformatted>
76.0    : frev: 37686, drift: 0.058 us, tfer: 215973 B/s, rpm: 360.639
76.0    : base: 2.010 us [98.683%], band: 4.000 us, 6.031 us, 8.205 us
76.0    : MFM: <mismatch>, *N
76.1    : frev: 49904, drift: 0.449 us, tfer: 287053 B/s, rpm: 360.639
76.1    : base: 2.003 us [33.160%], band: 4.007 us
76.1    : MFM: <unformatted>
78.0    : frev: 37680, drift: 0.191 us, tfer: 215973 B/s, rpm: 360.639
78.0    : base: 2.009 us [99.768%], band: 4.001 us, 6.026 us, 8.015 us
78.0    : MFM: <mismatch>, *N
78.1    : frev: 49946, drift: 0.999 us, tfer: 287333 B/s, rpm: 360.640
78.1    : base: 2.002 us [33.243%], band: 4.004 us
78.1    : MFM: <unformatted>
80.0    : frev: 49918, drift: 0.191 us, tfer: 286391 B/s, rpm: 360.640
80.0    : base: 2.003 us [33.188%], band: 4.006 us
80.0    : MFM: <unformatted>
80.1    : frev: 49902, drift: 0.150 us, tfer: 286078 B/s, rpm: 360.641
80.1    : base: 2.003 us [33.161%], band: 4.007 us
80.1    : MFM: <unformatted>
82.0    : frev: 40870, drift: 0.524 us, tfer: 233693 B/s, rpm: 360.639
82.0    : base: 2.006 us [99.125%], band: 3.975 us, 6.019 us, 8.113 us
82.0    : MFM: OK*, trk: 041, sec: 8, *H +3
82.1    : frev: 49922, drift: 0.400 us, tfer: 286078 B/s, rpm: 360.642
82.1    : base: 2.003 us [33.191%], band: 4.006 us
82.1    : MFM: <unformatted>

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Any ideas of what disk format that is? Copy protected? Special backup format?

User avatar
IFW
Posts: 3079
Joined: Mon Nov 08, 2010 2:42 pm

Re: what does "MFM <Mismatch>" mean?

Post by IFW » Mon Sep 30, 2013 11:11 am

It uses a different sector size from track 1.
I would also try and see if it's 80 tracks, just to be sure; currently you treat it as 40 tracks.

Darkstar
Posts: 72
Joined: Thu Nov 04, 2010 7:58 pm

Re: what does "MFM <Mismatch>" mean?

Post by Darkstar » Mon Sep 30, 2013 12:01 pm

I'm pretty sure it's 40 tracks since there probably was no disk format which used 80 tracks on a single side. But I'll check.

I'll also check other sector sizes, maybe I find out something. I'll probably have to convert it to IPF and stick it into MESS to see if there's anything usable on it.

User avatar
IFW
Posts: 3079
Joined: Mon Nov 08, 2010 2:42 pm

Re: what does "MFM <Mismatch>" mean?

Post by IFW » Mon Sep 30, 2013 4:13 pm

Well, if it's not 40 tracks a track number warning will be issued anyway, once you set the correct sector size...
Just try the different sector sizes and see which one works; there aren't many possibilities anyway :)

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