IMageDisk Analyzer 1.20 / Jan 09 2024
IMD 1.17:  1/01/1990  9:56:42

HARDDSK0    DD/SS

#1 OF 4     XEROX 820-II

BACKUP OF HARD DISK DRIVE A

6/16/84

Required cylinders: 77
Required heads    : 1
Data rate         : 500kbps
Est. maximum track: 8951 bytes

Possible drives/options to write B1D5.IMD :

 3.5" HD 80-track   NOTE: *1 *2
   Double-step: OFF

 5.25" HD 80-track   NOTE: *1
   Double-step: OFF

 8" 77-track
   Double-step: OFF

*1 77 track image likely from 8" drive.
*2 Should fit on 360rpm drive, 300rpm drive will leave long end gap.




IMageDisk Utility 1.20 / Jan 09 2024
IMD 1.17:  1/01/1990  9:56:42

HARDDSK0    DD/SS

#1 OF 4     XEROX 820-II

BACKUP OF HARD DISK DRIVE A

6/16/84

Assuming 1:1 for Binary output
 0/0 500 kbps SD  26x128
     1  10 19 2  11 20 3  12 21 4  13 22 5  14 23 6  15 24 7  16 25 8  17 26 9  18 
     D  DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5DE5
 1/0 500 kbps DD  26x256
     1  10 19 2  11 20 3  12 21 4  13 22 5  14 23 6  15 24 7  16 25 8  17 26 9  18 
     D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 2/0 D  DE5D  D  DE5D  D  DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5D  D  DE5D  
 3/0 D  D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  
 4/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 5/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 6/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 7/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 8/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
 9/0 D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  
10/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
11/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
12/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
13/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
14/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
15/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
16/0 D  D  D  DE5D  D  DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
17/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
18/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
19/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
20/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
21/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
22/0 D  D  D  D  D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  D  D  
23/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
24/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
25/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
26/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
27/0 D  D  D  D  D  D  D  D  D  D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  
28/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
29/0 D  D  D  D  D  D  D00D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
30/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
31/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
32/0 D  D  D  D  D  D  D  D  D00D  D  D00D  D  D  D  D  D  D  D  D  D  D  DE5D  D  
33/0 DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
34/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
35/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
36/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
37/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
38/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
39/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
40/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
41/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
42/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  DE5D  D  D  D  D  D  D  D  
43/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
44/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
45/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
46/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
47/0 D  D  D00D  D  D00D  D  D00D  DE5D00D  DE5D00D  D  D00D  D  D00D  D00D00D  D00
48/0 D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00D00
49/0 D00D00D  D00D00D  D00D00D  D00D  D  D00D  D  D00D  D  D00D00D  D00D  D  D00D  
50/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
51/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  
52/0 DE5D  D  DE5D  D  DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
53/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
54/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
55/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
56/0 D  DE5D  D  DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
57/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
58/0 D  D  D  D  D  D  D  D  D00D  D  D00D  D  D00D  D  D00D  D  D00D  D  D00D  D  
59/0 D00D00D00D00D00D00D00D00D  D00D00D  D00D00D  D00D00D  D00D00D  D00D00D  D00D00
60/0 D  D  D  D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
61/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
62/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
63/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
64/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  
65/0 DE5D  D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
66/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
67/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
68/0 D  D  D  D  D  D  D  D  D  D  D  D00D  D  D  D  D  D  D  D  D  D  D  D  D  D  
69/0 D  DE5D  D  D  D  D  D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  D  DE5D  
70/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
71/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
72/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
73/0 D  DE5D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
74/0 D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  
75/0 D  D  D00D  D  D00D  D  D00D  D  D  D  D  D  D  D  D00D  D  D00D  D  D00D  D  
76/0 D00D  DE5D  D  DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5DE5D  DE5
77 tracks(77/0), 2002 sectors (189 Compressed)



BEGIN XER6  Xerox 16/8 - DSDD 8" - 256 x 26
DENSITY MFM HIGH
CYLINDERS 77 SIDES 2 SECTORS 26 256 SKEW 5
SIDE1 0 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26
SIDE2 1 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26
ORDER CYLINDERS
BSH 5 BLM 31 EXM 3 DSM 246 DRM 127 AL0 080H AL1 0 OFS 2
END

# XER6  Xerox 16/8 - DSDD 8" - 256 x 26
diskdef xer6
  seclen 256
  tracks 154
  sectrk 26
  blocksize 4096
  maxdir 128
  skew 5
#  offset 26624
  offset 9984
#  boottrk 2
  boottrk 0
  os 2.2
end

# libdsk
#ORDER CYLINDERS
[xer6]
description = XER6  Xerox 16/8 - DSDD 8" - 256 x 26
sides = outback
cylinders = 154
heads = 2
secsize = 256
sectors = 26
secbase = 1
datarate = ED

# Flashfloppy/GOTEK
[xer6]
cyls = 154
heads = 2
secs = 26
interleave = 1
bps = 256
id = 1
rpm = 360
#rpm = 300
rate = 250
mode = mfm
iam = no



Directory is at 0x2700 = 9984 Decimal
00002700   00 48 41 52  44 44 53 4B  30 42 4B 44  00 00 00 18  .HARDDSK0BKD....
00002710   02 03 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
00002720   00 4D 50 20  20 20 20 20  20 4F 56 52  01 00 00 80  .MP      OVR....
00002730   04 05 06 07  08 09 0A 0B  0C 0D 0E 0F  10 11 12 13  ................
00002740   00 4D 50 20  20 20 20 20  20 4F 56 52  02 00 00 51  .MP      OVR...Q
00002750   14 15 16 17  18 19 00 00  00 00 00 00  00 00 00 00  ................
00002760   00 4D 50 20  20 20 20 20  20 48 4C 50  01 00 00 80  .MP      HLP....
00002770   1A 1B 1C 1D  1E 1F 20 21  22 23 24 25  26 27 28 29  ...... !"#$%&'()
00002780   00 4D 50 20  20 20 20 20  20 48 4C 50  02 00 00 3A  .MP      HLP...:
00002790   2A 2B 2C 2D  00 00 00 00  00 00 00 00  00 00 00 00  *+,-............
000027A0   00 41 53 43  4F 4D 48 4C  50 4D 53 47  01 00 00 80  .ASCOMHLPMSG....
000027B0   2E 2F 30 31  32 33 34 35  36 37 38 39  3A 3B 3C 3D  ./0123456789:;<=
000027C0   00 41 53 43  4F 4D 48 4C  50 4D 53 47  02 00 00 36  .ASCOMHLPMSG...6
000027D0   3E 3F 40 41  00 00 00 00  00 00 00 00  00 00 00 00  >?@A............
000027E0   00 46 49 58  20 20 20 20  20 43 4F 4D  01 00 00 80  .FIX     COM....
000027F0   42 43 44 45  46 47 48 49  4A 4B 4C 4D  4E 4F 50 51  BCDEFGHIJKLMNOPQ
00002800   00 46 49 58  20 20 20 20  20 43 4F 4D  02 00 00 1E  .FIX     COM....
00002810   52 53 00 00  00 00 00 00  00 00 00 00  00 00 00 00  RS..............
00002820   00 57 53 4F  56 4C 59 31  20 4F 56 52  01 00 00 80  .WSOVLY1 OVR....
00002830   54 55 56 57  58 59 5A 5B  5C 5D 5E 5F  60 61 62 63  TUVWXYZ[\]^_`abc
00002840   00 57 53 4F  56 4C 59 31  20 4F 56 52  02 00 00 0A  .WSOVLY1 OVR....
00002850   64 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  d...............



$ cpmls -f xer6 -T rawob,xer6 -D B1D5.RAW
     Name    Bytes   Recs  Attr     update             create
------------ ------ ------ ---- -----------------  -----------------
ASCOMHLP.MSG    40K    310    
FIX     .COM    32K    256    
HARDDSK0.BKD     4K     24    
MP      .HLP    40K    314    
MP      .OVR    44K    337    
    5 Files occupying    320K,     676K Free.



