W83697HF Datasheet, PDF (148/167 Pages) Winbond – WINBOND I/O

W83697HF/F
CR28 (Default 0x00)
Bit 7 - 3 : Reserved.
Bit 2 - 0 : PRTMODS2 - PRTMODS0
= 0xx Parallel Port Mode
= 100 Reserved
= 101 External FDC Mode
= 110 Reserved
= 111 External two FDC Mode
CR29 (GPIO1,5(50~51) & Game port & MIDI port Select default 0x00 )
Bit 7 : Port Select (select Game Port or General Purpose I/O Port 1)
= 0 Game Port
= 1 General Purpose I/O Port 1 (pin121~128 select function GP10~GP17)
Bit [6:5] : (Pin119)
=00 MSI
=01 WDTO
=10 Reserved
=11 GP51
Bit[4:3] : (Pin 120)
=00 MSO
=01 PLED
=10 Reserved
=11 GP50
Bit 2 :(Pin117)
OVT# & SMI Select(Pin117)
= 0 OVT#
= 1 SMI#
Bit 1~0 : Reserved
CR2A(GPIO2 ~ 5& Fresh ROM Interface Select
Default 0xFF if PENROM# = 0 during POR, default 0x00 otherwise)
Bit 7 : (PIN 86 ~89 & 91 ~94)
= 0 GPIO 2
= 1 Fresh IF (xD7 ~ XD0)
Bit 6 : (PIN 78 ~ 85)
= 0 GPIO 3
= 1 Fresh IF (XA7 ~ XA0)
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Publication Release Date: Feb. 2002
Revision 0.70