w83977ctf Winbond Electronics Corp America, w83977ctf Datasheet - Page 106
w83977ctf
Manufacturer Part Number
w83977ctf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977CTF.pdf
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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 5 - 4: PIN40S1, PIN40S0
Bit 3 - 2: PIN39S1, PIN39S0
Bit 1 - 0: PIN3S1, PIN3S0
Bit 6: PIN56S
= 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#
= 0
= 00 SUSCIN#
= 01 Reserved
= 10 GP25
= 11 Reserved
GA20
GP11
Disable IRQ Sharing
Enable IRQ Sharing
-97 -
Publication Release Date: March 1999
W83977EF/ CTF
PRELIMINARY
Revision A1
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