FDC37M81x SMSC Corporation, FDC37M81x Datasheet - Page 32

• Manufacturer Part Number: FDC37M81x
• Description: PC98/99 Compliant Enhanced Super I/O Controller
• Manufacturer: SMSC Corporation

BIT NO.
7
6
5
4
3
2
1
0
EN
DE
OR
ND
NW
MA
SYMBOL
End of
Cylinder
Data Error
Overrun/
Underrun
No Data
Not Writeable
Missing
Address Mark
NAME
Table 14 - Status Register 1
The FDC tried to access a sector beyond the final sector
of the track (255D). Will be set if TC is not issued after
Read or Write Data command.
Unused. This bit is always "0".
The FDC detected a CRC error in either the ID field or
the data field of a sector.
Becomes set if the FDC does not receive CPU or DMA
service within the required time interval, resulting in data
overrun or underrun.
Unused. This bit is always "0".
Any one of the following:
1. Read Data, Read Deleted Data command - the FDC
2. Read ID command - the FDC cannot read the ID field
3. Read A Track command - the FDC cannot find the
WP pin became a "1" while the FDC is executing a Write
Data, Write Deleted Data, or Format A Track command.
Any one of the following:
1. The FDC did not detect an ID address mark at the
2.
32
did not find the specified sector.
without an error.
proper sector sequence.
specified track after encountering the index pulse
from the nINDEX pin twice.
deleted data address mark on the specified track.
The FDC cannot detect a data address mark or a
DESCRIPTION