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- PART 4:
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- DISK SURVEY
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- Information on Disk Formats
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- .pa
- è.he UCPM Manual -- Disk Format Survey, Page #
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Altos double density
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- Computers on which this disk format is or may be used: Altos
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- Physical size of disk (8", 5.25", 3.5"): 8
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- Recording format (IBM, SS, DD, QD, Apple, etc.): SSDD
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- Sides: 1
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- Tracks/Side: 77
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- Physical Sectors/Track: 15
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- Logical Sectors to Physical Sectors: 4
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- Location of bootup routine: track 0 sector 1
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- Location of directory: track 2 sector 1
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- Size of directory: 128 entries (4K)
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- Allocation group size: 4K
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- Is there a standard form of on-disk time/date stamping? What is it?
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- Standard MP/M time/date stamping
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- Other information on disk format:
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- áááááSecondar∙ áSSD─ áforma⌠ áusinτ 12╕ bytσ physica∞ ásector≤ ái≤ áals∩ ì
- áááááavailablσ als∩ caε read/writσ standarΣ SSS─ format
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- DISK FORMAT SURVEY:
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- Name of Disk Format: AMSTRAD System Format
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- Computers on which this disk format is or may be used: AMSTRAD
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- Physical size of disk (8", 5.25", 3.5"): 3"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): SS
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- Sides: 2
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- Tracks/Side: 40
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- Physical Sectors/Track: 9
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- Logical Sectors to Physical Sectors: 4/1
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- Location of bootup routine: Track 0
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- Location of directory: Track 0
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- Size of directory: 64
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping? What is it?
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- CP/M+ standard format
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- Other information on disk format:
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- reads also IBM 40Tr, 8SecPTr
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- DISK FORMAT SURVEY
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- Name of Disk Format: Atari CP/M Format
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- Computers on which this disk format is or may be used:
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- AMSTRAD/Atari
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- Physical size of disk (8", 5.25", 3.5"): 3.5"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): DSDD
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- Sides: 2
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- Tracks/Side: 80
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- Physical Sectors/Track: 9
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- Logical Sectors to Physical Sectors: 4/1
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- Location of bootup routine: n.a.
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- Location of directory: Tr. 2
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- Size of directory: 112
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping? What is it?
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- CP/M+ standard
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- Other information on disk format:
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- used also on Atari ST CP/M Emulator
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Apple CP/M (5.25")
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- Computers on which this disk format is or may be used:
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- Apple
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): Apple
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- Sides: 1
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- Tracks/Side: 35
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- Physical Sectors/Track: 16
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- Logical Sectors to Physical Sectors: 2 logical = 1 physical
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- Location of bootup routine: track 0 sector 0
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- Location of directory: track 3 (standard cp/m)
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- Size of directory:
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping? What is it?
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Apple Disk II
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- Computers on which this disk format is or may be used:
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- Apple II series
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): Apple
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- Sides: 1
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- Tracks/Side: 35
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- Physical Sectors/Track: 16 (256-byte sectors)
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- Relation of Logical Sectors to Physical Sectors:
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- 2 128-byte logical sectors (low,high order) =
- 1 256-byte physical sector.
- Software translation:
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- Logical sector: 0,1 2,3 4,5 6,7 8,9 10,11 12,13 14,15
- Physical sector: 0 3 6 9 12 15 2 5
- Logical sector: 16,17 18,19 20,21 22,23 24,25 26,27 28,29 30,31
- Physical sector: 8 11 14 1 4 7 10 13
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- Location of bootup routine: Tracks 0,1,2 <-- mixed 6502 & z-80 code !!
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- Location of directory: Track 3, sectors 0-11
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- Size of directory: 48 32-byte entries
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- Allocation group size: 1K bytes / block; 16K bytes / extent.
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- Is there a standard form of on-disk time/date stamping? No.
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- What is it?
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- Other information on disk format:
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- áááááThσ álogical/physica∞ átranslatioε ái≤ normall∙ donσ áb∙ áthσ áBIO╙ ì
- áááááread/writσ á routines¼ NO╘ b∙ thσ sectraε routine¼ sincσ áthσ áBDO╙ ì
- áááááha≤ n∩ capabilit∙ t∩ conver⌠ 12╕-bytσ t∩ 25╢-bytσ sectors.
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Cromemc∩ Z2D
- DSSD (Double Side, Single Density)
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- Computers on which this disk format is or may be used:
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- Cromemco Z2-D
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): Cromemco DSSD format
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- Sides: 2
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- Tracks/Side: 40
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- Physical Sectors/Track: 18
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- Relation of Logical Sectors to Physical Sectors: 4:1 interleave
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- Location of bootup routine: C0, H0, S0
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- Location of directory: C2, H0, S0
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- Size of directory: 64 entry
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- Allocation group size: 1K
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- Is there a standard form of on-disk time/date stamping? NO What is it?
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- Other information on disk format:
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- Doublσ áSidσ áadaptatioε oµ Cromemc∩ Singlσ áSide¼ áSinglσ áDensit∙ ì
- áááááFormat
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Epson QX-10
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- Computers on which this disk format is or may be used:
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- áááááMan∙ á(caε áread¼ áformat¼ anΣ writσ ove≥ 10░ ádifferen⌠ áCP═ ádisδ ì
- áááááformat≤ a≤ wel∞ a≤ M╙-DO╙ disks.
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): IBM
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- Sides: 2
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- Tracks/Side║ 40
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- Physical Sectors/Track:
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- Relation of Logical Sectors to Physical Sectors:
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- Location of bootup routine: Tracks 0 and 1
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- Location of directory: Tracks 2 et seq
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- Size of directory:
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping?
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- Yes
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- What is it?
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- [Note: I have a Shugart 801 & a Qume DSDD that I use in DSSD]
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- Name of Disk Format: Generic CP/M (8")
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- Computers on which this disk format is or may be used:
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- Physical size of disk (8", 5.25", 3.5"): 8"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): SSSD and DSSD
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- Sides: 1 & 2
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- Tracks/Side:
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- Physical Sectors/Track:
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- Relation of Logical Sectors to Physical Sectors:
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- Location of bootup routine:
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- Location of directory:
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- Size of directory:
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping? What is it?
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- Name of Disk Format: 8" Exchange Format
- and 8" 1K sector, 9 Sectors/track DD
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- Computers on which this disk format is or may be used:
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- Exchange format on any
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- Physical size of disk (8", 5.25", 3.5"): 8"
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- Recording format (IBM, SS, DD, QD, Apple, etc.):
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- Sides: 1 or 2
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- Tracks/Side: 77
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- Physical Sectors/Track: 26 or 9
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- Relation of Logical Sectors to Physical Sectors: 1 or 8
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- Location of bootup routine: track 0 and 1 on exchange;
- track 0 on DD
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- Location of directory: First and second alloc. unit on exchange;
- first on DD
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- Size of directory║ 64 or 128 entries (2K or 4K bytes)
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- Allocation group size: 1K on exchange;
- 4k on DD
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- Is there a standard form of on-disk time/date stamping?
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- Yes
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- What is it? P2DOS
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- Other information on disk format:
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- See my article in The Computer Journal¼ Issue number 30.
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- è
- DISK FORMAT SURVEY:
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- Name of Disk Format: Kaypro DSDD
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- OΦ yes¼ thσ disδ format║ 1░ sectors/track¼ doublσ interleavinτ ¿ á╔ ì
- áááááthinδ )¼ 4░ tracks¼ 6┤ extents¼ 1╦ block≤ oε S╙ anΣ 2╦ oε DS¼ áboo⌠ ì
- ááááátracδ 00¼ director∙ tracδ 01
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- DISK FORMAT SURVEY:
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- Name of Disk Format: MULTIFLEX
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- Computers on which this disk format is or may be used:
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- MULTIFLEX
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): DD 512BYTE SECTOR.
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- Sides: 2
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- Tracks/Side: 35
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- Physical Sectors/Track: 9
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- Logical Sectors to Physical Sectors:
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- Location of bootup routine: side 0, track 0, sector 1
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- Location of directory: side 0, track 2
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- Size of directory:
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- Allocation group size:
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- Is there a standard form of on-disk time/date stamping? What is it? NO
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Northsta≥ Format
- (Uniquσ 1░ harΣ secto≥ format)
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- Computers on which this disk format is or may be used:
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- <ver∙ few>
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- Recording format (IBM, SS, DD, QD, Apple, etc.)║ SD
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- Sides: 2
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- Tracks/Side: 35
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- Physical Sectors/Track║ 1░ (hard)
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- Relation of Logical Sectors to Physical Sectors║ don'⌠ know
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- Location of bootup routine║ Iε boo⌠ PRO═ oε motherboard
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- Location of directory║ Tracδ 2
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- Size of directory║ 6┤ entries
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- Allocation group size║ 2k
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- Is there a standard form of on-disk time/date stamping? What is it?
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- No⌠ standard« ╔ usσ Z80DOS.
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- Other information on disk format:
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- 4╕ tpi
- 36░ ╦ byte≤ pe≥ disδ formatted
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Osborne SSSD
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- Computers on which this disk format is or may be used:
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- Osborne 1
- Osborne Executive (can read/write)
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.)║ SD
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- Sides: 1
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- Tracks/Side: 40
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- Physical Sectors/Track:
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- Relation of Logical Sectors to Physical Sectors:
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- Location of bootup routine: Track 0
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- Location of directory:
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- Size of directory:
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- Allocation group size: 2k
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- Is there a standard form of on-disk time/date stamping? What is it?
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- Name of Disk Format║ Osborne SSDD
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- Computers on which this disk format is or may be used:
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- Osborne Executive,
- Osborne 1 with DD card
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.)║ DD
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- Sides: 1
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- Tracks/Side║ 40
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- Physical Sectors/Track:
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- Relation of Logical Sectors to Physical Sectors:
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- Location of bootup routine: Track 0
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- Location of directory:
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- Size of directory:
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- Allocation group size: 1k
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- Is there a standard form of on-disk time/date stamping? What is it?
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- CP/M 3.0 timestamps for Executive only
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- Other information on disk format:
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Stride 640K format
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- Computers on which this disk format is or may be used:
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- Other Strides, Sages.
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- Physical size of disk (8", 5.25", 3.5"): 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.): DD/96TPI
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- Sides: 2
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- Tracks/Side: 80
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- Physical Sectors/Track: 8
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- Logical Sectors to Physical Sectors: 4 logical to 1 physical
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- Location of bootup routine: First two tracks
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- Location of directory: start of third track
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- Size of directory: 64 dirents, standard
- (can be set upto 1024 dirents)
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- Allocation group size: 2048 standard on floppies,
- setable (1K to 16K)
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- Is there a standard form of on-disk time/date stamping? No What is it?
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- Other information on disk format: Fully configurable
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Sunswick Engineering 5-640
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- Computers on which this disk format is or may be used:
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- áááááprivatσ format¼ onl∙ oε m∙ machine¼ a≤ fa≥ a≤ ╔ know.
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- Physical size of disk (8", 5.25", 3.5"): 5 inch
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- Recording format (IBM, SS, DD, QD, Apple, etc.): 96 TPI (Quad density)
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- Sides: 2
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- Tracks/Side: 84
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- Physical Sectors/Track: 1 (4K physical sectors)
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- Relation of Logical Sectors to Physical Sectors: 1:1 (no skewing)
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- Location of bootup routine: None
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- Location of directory: Track 2
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- Size of directory: 8K
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- Allocation group size: 4K
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- Is there a standard form of on-disk time/date stamping? No What is it?
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- Other information on disk format:
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- áááááThi≤ forma⌠ wa≤ inventeΣ t∩ makσ writinτ oµ disδ driver≤ eas∙ áwheε ì
- áááááuseΣ witΦ ful∞ 8╦ tracδ buffers« I⌠ probabl∙ wouldn'⌠ worδ wel∞ oε ì
- áááááothe≥ machines¼ duσ t∩ thσ 4╦ physica∞ secto≥ size.
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- DISK FORMAT SURVEY:
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- Name of Disk Format: SORD
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- Computers on which this disk format is or may be used:
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- SORDS, ???????
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- Physical size of disk (8", 5.25", 3.5")║ 5.25"
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- Recording format (IBM, SS, DD, QD, Apple, etc.)║ QD
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- Sides║ 2Tracks/Side:??
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- Physical Sectors/Track:??
- Relation of Logical Sectors to Physical Sectors:??
- Location of bootup routine:??
- Location of directory:??
- Size of directory:??
- Allocation group size:??
- Is there a standard form of on-disk time/date stamping? What is it?No
- Other information on disk format:
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- .pa
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Televideo (TS802 / TS803 / TPC)
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- Computers on which this disk format is or may be used:
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- ALL Televideo CP/M machines.
- Uniform & Mediamaster know of this format,
- The Davidge DSB6000 can also access these disks.
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- Physical size of disk (8", 5.25", 3.5"): 5.25
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- Recording format (IBM, SS, DD, QD, Apple, etc.): MFM - DS DD
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- Sides: 2
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- Tracks/Side: 40
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- Physical Sectors/Track: 18
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- Relation of Logical Sectors to Physical Sectors:
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- áááááeacΦ áphysica∞ secto≥ i≤ 25╢ bytes║ s∩ eacΦ "logicaló tracδ ái≤ á7▓ ì
- ááááásector≤ á(1╕ ᬠ▓ logica∞ sector≤ » phy≤ sec⌠ ¬ ▓ ásides)« áPas⌠ ì
- áááááthi≤ therσ i≤ n∩ logica∞ secto≥ skewinτ ¡ howeve≥ │ t∩ ▒ (╔ áthink⌐ ì
- áááááPHYSICA╠ ásecto≥ áske≈ i≤ applieΣ wheε thσ disδ i≤ áformatted« áThσ ì
- ááááápractica∞ áupsho⌠ i≤ tha⌠ a≤ fa≥ a≤ thσ BDO╙ ª BIO╙ áarσ áconcerneΣ ì
- ááááátherσ i≤ n∩ skewinτ oµ an∙ kinΣ a⌠ all.
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- Location of bootup routine: Initial boot sector: track 0 sector 0
- BDOS / BIOS run track 0 PHYSICAL sector 1
- up to track 1 sector 12 (I think)
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- Location of directory: Track 2
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- Size of directory: 2K - 64 entries
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- Allocation group size: 2K
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- Is there a standard form of on-disk time/date stamping? What is it? NONE
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- Other information on disk format: The exact mechanics of double sidedness:
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- logical sectors 0 and 1 ==> side 0 physical 0
- logical sectors 2 and 3 ==> side 0 physical 1
- .....
- logical sectors 34 and 35 ==> side 0 physical 17
- logical sectors 36 and 37 ==> side 1 physical 0
- .....
- logical sectors 70 and 71 ==> side 1 physical 17
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- DISK FORMAT SURVEY:
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- Name of Disk Format: Visual Technology proprietary
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- Computers on which this disk format is or may be used:
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- Visual Technology 1050
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- Physical size of disk (8", 5.25", 3.5"): 5.25
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- Recording format (IBM, SS, DD, QD, Apple, etc.): DD
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- Sides: 2 (?)
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- Tracks/Side: 90 ?
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- Physical Sectors/Track: 40
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- Relation of Logical Sectors to Physical Sectors: Huh?
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- Location of bootup routine: PROM / Tracks 0 & 1
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- Location of directory: Track 3
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- Size of directory: 128 entries
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- Allocation group size: 2k
-
- Is there a standard form of on-disk time/date stamping?
-
- YES
- What is it? CP/M 3 Std.
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