void outport (unsigned int addr, unsigned int data);

Write a to from a Z80 I/O port. The full 16 bit address is used. The only known MTX add-on which makes use of the high byte of the address is Speculator. The data is specified as 16-bit as this results in a more efficient subroutine call. Only the lower byte of the data variable is actually used.

Include file: ioport.h