NorthStar HSIO-4 User's & Technical Manual page 32

A. PROGRAMMING BAUD RATE SELECTION
0000 3E06
0002 D314
North Star HSIO-4
The baud rate for each port is programmed
independently.
rate for a port, output the Output
Value (from Table 3-3) to the Baud Rate Select
Address for the relevant port.
To determine the Baud Rate Select Address,
consult Tables 3-1 and 3-2 (in Section 3.1.3).
FOR EXAMPLE: Assuming the HSIO-4 board is
addressed starting at 10H, you would set the
baud rate to 300 on port B by outputting 06H
(the Output Value) to I/O address 14H with the
following instructions:
MVI
OUT 14H
27
To program the desired baud
A,6 ; Output Value for 300 Baud Async
User/Technical Manual