DataMuseum.dk

Presents historical artifacts from the history of:

CP/M

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about CP/M

Excavated with: AutoArchaeologist - Free & Open Source Software. 

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Index: 5 B C I M

⟦769b9ca29⟧ Bits:30005294 MBASIC v. 5.21 til CR7, 5¼" Floppy Disk, CpmFSAuto, ImdContainer

    Length: 634880 (0x9b000)
    Description: Bits:30005294 MBASIC v. 5.21 til CR7
    Types: 5¼" Floppy Disk, CpmFSAuto, ImdContainer
    Notes: CP/M-fs(256_2048_0x0_8_*1+1+3_1:0_77:1), CP/M-fs(256_2048_0x0_8_*1+1_1:0_77:1), CP/M-fs(256_2048_0x0_8_*2+1+2_1:0_77:1), CP/M-fs(256_2048_0x0_8_*4+1+2+3+4_1:0_77:1)

CpmFSAuto

Media:             [0, 0, 1] … [77, 0, 16] {256: 2480}
Signature:         256_2048_0x0_8_*1+1+3_1:0_77:1
Confidence score:  +2/-0
Sector size:       256
Block size:        2048
Directory entries: 8
Block number size: 16
Extent-mask:       0x00
Sector-interleave: 1, 2, 5, 6, 9, 10, 13, 14, 3, 4, 7, 8, 11, 12, 15, 16
Tracks:            (1, 0), (1, 1), (2, 0), (2, 1), (3, 0), (3, 1) […] (75, 0), (75, 1), (76, 0), (76, 1), (77, 0), (77, 1)
user bc length name artifact
0 0 24320 MBASIC.COM ⟦29d957fc6⟧

CpmFSAuto

Media:             [0, 0, 1] … [77, 0, 16] {256: 2480}
Signature:         256_2048_0x0_8_*1+1_1:0_77:1
Confidence score:  +2/-0
Sector size:       256
Block size:        2048
Directory entries: 8
Block number size: 16
Extent-mask:       0x00
Sector-interleave: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
Tracks:            (1, 0), (1, 1), (2, 0), (2, 1), (3, 0), (3, 1) […] (75, 0), (75, 1), (76, 0), (76, 1), (77, 0), (77, 1)
user bc length name artifact
0 0 24320 MBASIC.COM ⟦0ad724196⟧

CpmFSAuto

Media:             [0, 0, 1] … [77, 0, 16] {256: 2480}
Signature:         256_2048_0x0_8_*2+1+2_1:0_77:1
Confidence score:  +2/-0
Sector size:       256
Block size:        2048
Directory entries: 8
Block number size: 16
Extent-mask:       0x00
Sector-interleave: 1, 3, 5, 7, 9, 11, 13, 15, 2, 4, 6, 8, 10, 12, 14, 16
Tracks:            (1, 0), (1, 1), (2, 0), (2, 1), (3, 0), (3, 1) […] (75, 0), (75, 1), (76, 0), (76, 1), (77, 0), (77, 1)
user bc length name artifact
0 0 24320 MBASIC.COM ⟦bba7676fe⟧

CpmFSAuto

Media:             [0, 0, 1] … [77, 0, 16] {256: 2480}
Signature:         256_2048_0x0_8_*4+1+2+3+4_1:0_77:1
Confidence score:  +2/-0
Sector size:       256
Block size:        2048
Directory entries: 8
Block number size: 16
Extent-mask:       0x00
Sector-interleave: 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 4, 8, 12, 16
Tracks:            (1, 0), (1, 1), (2, 0), (2, 1), (3, 0), (3, 1) […] (75, 0), (75, 1), (76, 0), (76, 1), (77, 0), (77, 1)
user bc length name artifact
0 0 24320 MBASIC.COM ⟦3da2754e5⟧

CP/M filesystem probe

Geometry: [[0, 0, 1], [77, 0, 16]]

First credible dirsect is: (1, 0, 1) at 0x2000 with 0x0 attribute records

Credible directory tracks:
   (1, 0)  0x2000 3-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1

Total credibility: 2

Block number width: ok16

   8     0     2    10    10  False
  16     0     2    13     0  False

Block Sizes:
    2048 0x00 +2 -0
     128 0x00 +0 -2
     256 0x00 +0 -2
     512 0x00 +0 -2
    1024 0x00 +0 -2
    4096 0x01 +0 -2
    8192 0x03 +0 -2
   16384 0x07 +0 -2
   32768 0x0f +0 -2
   65536 0x1f +0 -2

Candidate interleaves in order of directory credibility:

Penalty  Name         Order                                                                     Resulting dir order
      0  CR7_Diplomat (1-2-5-6-9-10-13-14-3-4-7-8-11-12-15-16)                                  [2]   +2/-0
      0  normal-1     (1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16)                                  [2]   +2/-0
      0  normal-2     (1-3-5-7-9-11-13-15-2-4-6-8-10-12-14-16)                                  [2]   +2/-0
      0  normal-3     (1-4-7-10-13-16-3-6-9-12-15-2-5-8-11-14)                                  [2]   +2/-1
      0  normal-4     (1-5-9-13-2-6-10-14-3-7-11-15-4-8-12-16)                                  [2]   +2/-0
      0  normal-5     (1-6-11-16-5-10-15-4-9-14-3-8-13-2-7-12)                                  [2]   +2/-1
      0  normal-6     (1-7-13-3-9-15-5-11-2-8-14-4-10-16-6-12)                                  [2]   +2/-1
      0  normal-7     (1-8-15-6-13-4-11-2-9-16-7-14-5-12-3-10)                                  [2]   +2/-1

File & label names found:
  0x0002000 (1, 0, 1)
    ProbeDirEnt {status=0x00, name=»MBASIC  COM«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=02000300040005000600070008000900}
    ProbeDirEnt {status=0x00, name=»MBASIC  COM«, xl=0x01, bc=0x00, xh=0x00, rc=0x3e, al=0a000b000c000d000000000000000000}
+   2 -   0 <Tree 0x0-0x4d800-0x9b000>
+   2 -   0 <Tree 0x0-0x4d800-0x9b000>
+   2 -   0 <Tree 0x0-0x4d800-0x9b000>
+   2 -   0 <Tree 0x0-0x4d800-0x9b000>
+   2 -   1 <Tree 0x0-0x4d800-0x9b000>

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