Intel 386 User Manual

Page 492

16-13

INPUT/OUTPUT PORTS

{

/* Select pin values */

_SetEXRegByte(P1LTC, PortLtc1);

_SetEXRegByte(P2LTC, PortLtc2);

_SetEXRegByte(P3LTC, PortLtc3);

/* Select pin directions */

_SetEXRegByte(P1DIR, PortDir1);

_SetEXRegByte(P2DIR, PortDir2);

_SetEXRegByte(P3DIR, PortDir3);

/* Turn off weak resistors and select either I/O or peripheral mode */

_SetEXRegByte(P1CFG, Port1);

_SetEXRegByte(P2CFG, Port2);

_SetEXRegByte(P3CFG, Port3);

} /* Init_IOPorts */