IoWriteIoPort8(), IoWriteIoPort16(), IoWriteIoPort32()

These functions are declared in the coresrv/io/ports.h file.

void IoWriteIoPort8(rtl_size_t port, rtl_uint8_t data);

void IoWriteIoPort16(rtl_size_t port, rtl_uint16_t data);

void IoWriteIoPort32(rtl_size_t port, rtl_uint32_t data);

The functions write a one-, two-, or four-byte data value to the specified port.