w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 89

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

CR28 (Default 0x00)
CR2A (Default 0x00)
Bit 7 - 5: Reserved.
Bit 4: IRQ Sharing selection.
Bit 3:Reserved
Bit 2 - 0: PRTMODS2 - PRTMODS0
Bit 7: PIN57S
Bit 6: PIN56S
Bit 5 - 4: PIN40S1, PIN40S0
Bit 3 - 2: PIN39S1, PIN39S0
Bit 1 - 0: PIN3S1, PIN3S0
= 0
= 0
= 1
= 0xx Parallel Port Mode
= 100 Reserved
= 101 External FDC Mode
= 110 Reserved
= 111 External two FDC Mode
= 0 KBRST
= 1 GP12
= 1
= 00 CIRRX
= 01 GP24
= 10 8042 P13
= 11 Reserved
= 00 DRVDEN1
= 01 GP10
= 10 8042 P12
= 11 SCI#
= 00 SUSCIN#
= 01 Reserved
= 10 GP25
= 11 Reserved
GA20
GP11
Disable IRQ Sharing
Enable IRQ Sharing
W83977EF-AW/W83977EG-AW
-87-
Publication Release Date: Apr. 2006
Revision 1.2