DataMuseum.dk

Presents historical artifacts from the history of:

RegneCentralen RC700 "Piccolo"

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

See our Wiki for more about RegneCentralen RC700 "Piccolo"

Excavated with: AutoArchaeologist - Free & Open Source Software. 

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Index: 5 C I P

⟦0ea051747⟧ Bits:30003707 Pacman game vers. 2.1 til RC702, 5¼" Floppy Disk, CpmFSAuto, ImdContainer

    Length: 319360 (0x4df80)
    Description: Bits:30003707 Pacman game vers. 2.1 til RC702
    Types: 5¼" Floppy Disk, CpmFSAuto, ImdContainer
    Notes: CpmFSAuto_512_2048_0x1_16_*2+0+1_2:0_34:1

CpmFSAuto

Media:             [0, 0, 0] … [34, 1, 8] {128: 15, 256: 16, 512: 612}
Signature:         CpmFSAuto_512_2048_0x1_16_*2+0+1_2:0_34:1
Confidence score:  +4/-0
Sector size:       512
Block size:        2048
Directory entries: 16
Block number size: 8
Extent-mask:       0x01
Sector-interleave: 0, 2, 4, 6, 8, 1, 3, 5, 7
Tracks:            (2, 0), (2, 1), (3, 0), (3, 1), (4, 0), (4, 1) […] (32, 0), (32, 1), (33, 0), (33, 1), (34, 0), (34, 1)
user bc length name artifact
0 0 4096 PACMAN.001 ⟦010c4735b⟧
0 0 4096 PACMAN.002 ⟦f4b11fb4c⟧
0 0 256 PACMAN.003 ⟦0f64427d7⟧
0 0 21248 PACMAN.COM ⟦4e44e5c38⟧

CP/M filesystem probe

Geometry: [[0, 0, 0], [34, 1, 8]]

First credible dirsect is: (2, 0, 0) at 0x3b80 with 0x0 attribute records

Credible directory tracks:
   (2, 0)  0x3b80 5-1-1-1-1-1-1-0-1

Total credibility: 4

Block number width: ok8

   8     0     2    17     0  False
  16     0    12  4111     0   True

Block Sizes:
    2048 0x01 +4 -0
     256 0x00 +1 -3
     512 0x00 +1 -3
    1024 0x00 +1 -3
    4096 0x03 +1 -3
    8192 0x07 +1 -3
   16384 0x0f +1 -3
   32768 0x1f +1 -3
   65536 0x3f +1 -3
     128 0x00 +0 -4

Candidate interleaves in order of directory credibility:

Penalty  Name         Order                                                                     Resulting dir order
      0  normal-1     (0-1-2-3-4-5-6-7-8)                                                       [4]   +4/-6
      0  normal-2     (0-2-4-6-8-1-3-5-7)                                                       [4]   +4/-0
      0  normal-3     (0-3-6-1-4-7-2-5-8)                                                       [4]   +4/-6

File & label names found:
  0x0003b80 (2, 0, 0)
    ProbeDirEnt {status=0x00, name=»PACMAN  COM«, xl=0x01, bc=0x00, xh=0x00, rc=0x26, al=02030405060708090a0b0c0000000000}
    ProbeDirEnt {status=0x00, name=»PACMAN  001«, xl=0x00, bc=0x00, xh=0x00, rc=0x20, al=0d0e0000000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»PACMAN  002«, xl=0x00, bc=0x00, xh=0x00, rc=0x20, al=0f100000000000000000000000000000}
    ProbeDirEnt {status=0x00, name=»PACMAN  003«, xl=0x00, bc=0x00, xh=0x00, rc=0x02, al=11000000000000000000000000000000}
+   4 -   0 <Tree 0x0-0x26fc0-0x4df80>
+   4 -   6 <Tree 0x0-0x26fc0-0x4df80>

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