W83C553F Datasheet, PDF (109/159 Pages) Winbond – SYSTEM I/O CONTROLLER WITH PCI ARBITER

W83C553F
4.2.4
Miscellaneous I/O Control Registers
Electrical Specifications
NMI Status and Control (Port B) Register (default = 00h)
Type: Read/Write
Bit Description:
Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bit 1:
Bit 0:
SERR# Status.
IOCHK# Status.
Timer Counter 2 Output.
Refresh Cycle Toggle.
IOCHK# NMI Enable.
SERR# NMI Enable.
Speaker Data Enable.
Timer Counter 2 Enable.
Note: for Bit 3 and Bit 2, 1= Enable; 0 = Disable.
WINBOND SYSTEMS LABORATORY
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