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. 

top - metrics
Index: 5 C I S T

⟦121d96d60⟧ Bits:30005835 RC Chess 750 source code, 5¼" Floppy Disk, CpmFSAuto, ImdContainer

    Length: 1261568 (0x134000)
    Description: Bits:30005835 RC Chess 750 source code
    Types: 5¼" Floppy Disk, CpmFSAuto, ImdContainer
    Notes: CP/M-fs(1024_2048_0x0_*1+1_2:0_76:1_64)

CpmFSAuto

Media:             [0, 0, 1] … [76, 1, 8] {1024: 1232}
Signature:         1024_2048_0x0_*1+1_2:0_76:1_64
Confidence score:  +28/-0 
Sector size:       1024
Block size:        2048
Directory entries: 64
Block number size: 16
Extent-mask:       0x00
Sector-interleave: 1, 2, 3, 4, 5, 6, 7, 8
Tracks:            (2, 0), (2, 1), (3, 0), (3, 1), (4, 0), (4, 1) […] (74, 0), (74, 1), (75, 0), (75, 1), (76, 0), (76, 1)
user bc length name artifact
0 0 46208 CHESS.000 ⟦9a30032ad⟧
0 0 128 CHESS.CHS ⟦5a2857796⟧ TextFile
0 0 30720 CHESS.CMD ⟦6a85150be⟧
0 0 4224 CHESS.FNT ⟦ff2600976⟧
0 0 2816 CHESS.HLP ⟦7e5fc2744⟧ TextFile
0 0 20352 CHESS.OP ⟦1d477761f⟧
0 0 51840 CHESS750.000 ⟦9049803fa⟧
0 0 33408 CHESS750.CMD ⟦ddbf938ae⟧
0 0 85376 CHESS80.PAS ⟦2a51cc3e1⟧ TextFile

CP/M filesystem probe

Geometry: [[0, 0, 1], [76, 1, 8]]

First credible dirsect is: (2, 0, 1) at 0x8000 with 0x8 attribute records

Credible directory tracks:
   (2, 0)  0x8000 24-2-1-1-1-1-1-1
   (2, 1)  0xa000 1-1-1-1-1-1-1-1

Total credibility: 24

Block number width: ok16

   8     0     8   145   116  False
  16     0     8   146     0  False

Block Sizes:
    2048 0x00 +23 -0
    1024 0x00 +2 -21
     128 0x00 +1 -22
     256 0x00 +1 -22
     512 0x00 +1 -22
    4096 0x01 +1 -22
    8192 0x03 +1 -22
   16384 0x07 +1 -22
   32768 0x0f +1 -22
   65536 0x1f +1 -22

Candidate interleaves in order of directory credibility:

Penalty  Name         Order                                                                     Resulting dir order
      0  normal-1     (1-2-3-4-5-6-7-8)                                                         [23, 1]   +28/-0
      3  normal-3     (1-4-7-2-5-8-3-6)                                                         [23, 0, 0, 1]   +26/-3
      4  normal-2     (1-3-5-7-2-4-6-8)                                                         [23, 0, 0, 0, 1]   +24/-3
From the beastiarium: CpmFSCr16   +0/-0

File & label names found:
  0x0008000 (2, 0, 1)
    ProbeDirEnt {status=0x20, name=»chess      «, xl=0x31, bc=0x00, xh=0x00, rc=0x00, al=00000000000000003f0b15543f0b1554}
    ProbeDirEnt {status=0x00, name=»CHESS   TST«, xl=0x00, bc=0x00, xh=0x00, rc=0x00, al=00000000000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS750C D«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=09000a000b000c000d000e000f001000}
    ProbeDirEnt {status=0x00, name=»CHESS   CMD«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=16001700180019001a001b001c001d00}
    ProbeDirEnt {status=0x00, name=»CHESS   CMD«, xl=0x01, bc=0x00, xh=0x00, rc=0x70, al=1e001f00200021002200230024000000}
    ProbeDirEnt {status=0x00, name=»CHESS   000«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=250026002700280029002a002b002c00}
    ProbeDirEnt {status=0x00, name=»CHESS   000«, xl=0x01, bc=0x00, xh=0x00, rc=0x80, al=2d002e002f0030003100320033003400}
    ProbeDirEnt {status=0x00, name=»CHESS   000«, xl=0x02, bc=0x00, xh=0x00, rc=0x69, al=350036003700380039003a003b000000}
    ProbeDirEnt {status=0x00, name=»CHESS   O  «, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=3c003d003e003f004000410042004300}
    ProbeDirEnt {status=0x00, name=»CHESS   O  «, xl=0x01, bc=0x00, xh=0x00, rc=0x1f, al=44004500000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS   F T«, xl=0x00, bc=0x00, xh=0x00, rc=0x21, al=46004700480000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS   CHS«, xl=0x00, bc=0x00, xh=0x00, rc=0x01, al=49000000000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS   H P«, xl=0x00, bc=0x00, xh=0x00, rc=0x16, al=4a004b00000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS750C D«, xl=0x01, bc=0x00, xh=0x00, rc=0x80, al=110012001300140015004c004d004e00}
    ProbeDirEnt {status=0x00, name=»CHESS750C D«, xl=0x02, bc=0x00, xh=0x00, rc=0x05, al=4f000000000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS7500 0«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=50005100520053005400550056005700}
    ProbeDirEnt {status=0x00, name=»CHESS7500 0«, xl=0x01, bc=0x00, xh=0x00, rc=0x80, al=580059005a005b005c005d005e005f00}
    ProbeDirEnt {status=0x00, name=»CHESS7500 0«, xl=0x02, bc=0x00, xh=0x00, rc=0x80, al=60006100620063006400650066006700}
    ProbeDirEnt {status=0x00, name=»CHESS7500 0«, xl=0x03, bc=0x00, xh=0x00, rc=0x15, al=68006900000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x00, bc=0x00, xh=0x00, rc=0x80, al=08006a006b006c006d006e006f007000}
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x01, bc=0x00, xh=0x00, rc=0x80, al=71007200730074007500760077007800}
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x02, bc=0x00, xh=0x00, rc=0x80, al=79007a007b007c007d007e007f008000}
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x03, bc=0x00, xh=0x00, rc=0x80, al=81008200830084008500860087008800}
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x04, bc=0x00, xh=0x00, rc=0x80, al=89008a008b008c008d008e008f009000}
  0x0008400 (2, 0, 2)
    ProbeDirEnt {status=0x00, name=»CHESS80 PAS«, xl=0x05, bc=0x00, xh=0x00, rc=0x1b, al=91009200000000000000000000000000}
*  28 -   0 [1, 2, 3, 4, 5, 6, 7, 8]
+  26 -   3 [1, 4, 7, 2, 5, 8, 3, 6]
+  24 -   3 [1, 3, 5, 7, 2, 4, 6, 8]

Full view