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PC87310 Datasheet(PDF) 29 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza PC87310
Descripción Electrónicos  PC87310 (SuperI/OTM) Dual UART with Floppy Disk Controller and Parallel Port
PDF  52 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87310 Datasheet(HTML) 29 Page - National Semiconductor (TI)

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40 Functional Description (Continued)
READ DELETED DATA
Based on the specified address and
the deleted data mark
Command Phase
MT MFM SK
0
1
1
0
0
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Data Length
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
WRITE DATA
To specified sectors in logical order on
a track (optional Implied Seek)
Command Phase
MT MFM
000101
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Data Length
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
SCAN EQUAL
Compare on a byte-by-byte basis the
m
P and disk data from the specified
sector match on e
Command Phase
MT MFM SK
1
0
0
0
1
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Sector Step Size
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
READ A TRACK
Read all sectors on the specified track
in physical order
Command Phase
0
MFM SK
0
0
0
1
0
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Data Length
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
WRITE DELETED DATA
Based on the address and the Deleted
Data Mark
Command Phase
MT MFM
001001
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Data Length
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
SCAN LOW OR EQUAL
Compare on a byte-by-byte basis the
m
P and disk data from the specified
sector match on ke
Command Phase
MT MFM SK
1
1
0
0
1
IPS
X
X
X
X
HD DR1 DR0
Track Number
Drive Head Number
Sector Number
Number of Bytes per Sector
End of Track Sector Number
Intersector Gap Length
Sector Step Size
Result Phase
Status Register 0
Status Register 1
Status Register 2
Track Number
Head Number
Sector Number
BytesSector
29



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