W83C553F Datasheet, PDF (79/159 Pages) Winbond – SYSTEM I/O CONTROLLER WITH PCI ARBITER

W83C553F
Electrical Specifications
PCI Arbiter Priority Extension Control Register
Index: 81h
Bit [7:4] [3:1] 0
BNK4 Rotary Enable
SAGENT Select [2:0]
Reserved
PCI Arbiter Priority Extension Control Register (default = 01h)
Type:
Read/Write
Bit Description:
Bits [7:4]:
Bits [3:1]:
Bits 0:
Reserved
Super Agent Select [2:0].
000 DISABLE
100 REQ0#
001 IDEIRQ#
101 REQ1#
010 SIOIRQ#
110 REQ2#
011 CPUREQ#
111 REQ3#
Bank 4 Rotate Enable. Defaults to 1b (enabled).
PCI Arbiter Priority Enhanced Control Register (default = 00h)
Type:
Read/Write
Bit Description:
Bits [7:6]:
Bits [5:4]:
Bits [3:2]:
Bits [1:0]:
Bank 4 Programmable Slot 3 Select [1:0].
Bank 4 Programmable Slot 2 Select [1:0].
Bank 4 Programmable Slot 1 Select [1:0].
Bank 4 Programmable Slot 0 Select [1:0].
WINBOND SYSTEMS LABORATORY
76