FDC37M70X Datasheet, PDF (145/194 Pages) List of Unclassifed Manufacturers – Enhanced Super I/O Controller with Wake-Up

Table 59 - Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]
NAME
REG INDEX
DEFINITION
STATE
FDD Type Register 0xF2 R/W Bits[1:0] Floppy Drive A Type
C
Bits[3:2] Floppy Drive B Type
Default = 0xFF
Bits[5:4] Reserved (could be used to store Floppy
on Vcc POR or
Reset_Drv
Drive C type)
Bits[7:6] Reserved (could be used to store Floppy
Drive D type)
Note: The FDC37M70x supports two floppy drives
0xF3 R Reserved, Read as 0 (read only)
C
FDD0
0xF4 R/W Bits[1:0] Drive Type Select: DT1, DT0
C
Bits[2] Read as 0 (read only)
Default = 0x00
Bits[4:3] Data Rate Table Select: DRT1, DRT0
on Vcc POR or
Reset_Drv
Bits[5] Read as 0 (read only)
Bits[6] Precompensation Disable PTS
=0 Use Precompensation
=1 No Precompensation
Bits[7] Read as 0 (read only)
FDD1
0xF5 R/W Refer to definition and default for 0xF4
C
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