w83c554f Winbond Electronics Corp America, w83c554f Datasheet - Page 77

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

W83C554F
PCI Arbiter Priority Extension Control Register (default = 01h)
Type:
Bit Description:
PCI Arbiter Priority Enhanced Control Register (default = 00h)
Type:
Bit Description:
WINBOND ELECTRONICS CORP. AMERICA
Bits [7:5]:
Bit 4:
Bits [3:1]:
Bits 0:
Bits [7:6]:
Bits [5:4]:
Bits [3:2]:
Bits [1:0]:
PCI Arbiter Priority Extension Control Register
Read/Write
Reserved
1: CPUGNT# will be asserted as long as CPUREQ# is asserted regardless of other PCI REQ#s
assertion
0: CPUGNT# will be deasserted if other PCIREQ#s are sampled active. (default)
Super Agent Select [2:0].
000 DISABLE
001 IDEIRQ#
010 SIOIRQ#
011 CPUREQ#
Bank 4 Rotate Enable. Defaults to 1b (enabled).
Read/Write
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].
Bit
[7:5]
Bit
4
100 REQ0#
101 REQ1#
110 REQ2#
111 REQ3#
[7:4]
[3:1]
[3:1]
0
0
BNK4 Rotary Enable
SAGENT Select [2:0]
CPUREQ Hold Enable
Reserved
BNK4 Rotary Enable
SAGENT Select [2:0]
Reserved
Register Information
Index: 81h
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