J105 STMC
The I/O map of the STMC board is given below, for jumpering as standard; i.e. with the base address as 3B0 (hex). For other base addresses (as set by LK1), simply add or subtract in multiples of 10 (hex).
Address Read or Write Function (hex) (dec) 3B0 944 Read/write Data port of stepper controller IC. 3B1 945 Read Status port of stepper controller IC. 3B1 945 Write Command port of stepper controller IC. 3B2 946 Read Input port (1C12) 3B2 946 Write Output port (1C13)
See Section 3 for details of how to change the base address of the board.