w83c554f Winbond Electronics Corp America, w83c554f Datasheet - Page 111

• Manufacturer Part Number: w83c554f
• Description: System I/o Controller With Pci Arbiter & Ultradma/33 Ide Controller
• Manufacturer: Winbond Electronics Corp America

W83C554F
Address
All reserved bits and bytes return a logic 0 when read. All reserved bytes written will execute normal PCI cycles, but will not
affect the operation or device registers.
Internal register information for the W83C554F SIO is organized as follows:
WINBOND ELECTRONICS CORP. AMERICA
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4Bh-48h
4Fh-4Ch
7Bh-54h
7Fh-7Ch
FFh-80h
43h-40h
47h-44h
53h-50h
Register name and Index value offset from base address.
Function of the signal.
Type (Read and/or Write).
Bit description.
31
IDE Control/Status Register
Port 0 Drive 0 Control Register
Port 0 Drive 1 Control Register
Port 1 Drive 0 Control Register
Port 1 Drive 1 Control Register
Reserved (00000000h)
Reserved
Reserved (00000000h)
Table 4-2. Organization of IDE Control Registers
24
23
Register Bits
16
15
8
Register Information
7
0
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