AdderView MATRIX MP
Installation and Use
Page 59
No handshaking is implemented but valid command characters will be echoed back
to the sender.
The top nibble (4 bits) of the command byte defines the user port that is to be
switched (1=port 1, 2=port 2). The bottom nibble defines the computer port that the
user port is to be switched to (e.g. 0=port 1, 1=port 2, E=port 15, F=port 16).
For example:
Hexadecimal code
14
switches user port 1 to computer port 5
Hexadecimal code
28
switches user port 2 to computer port 9
Hexadecimal code
2D
switches user port 2 to computer port 14
Special codes are:
Hexadecimal code
71
switches user port 1 to computer port 0 (off)
Hexadecimal code
72
switches user port 2 to computer port 0 (off)
The 9-pin female RS232 connector at the rear of the AdderView has the following
pinout:
4.21 Keyboard equivalent key mappings
If you are connecting a mixture of IBM compatible PCs, Sun and Macintosh
computers to the AdderView then you have several possible keyboard configuration
options. You may decide to connect a Sun, PC or Macintosh style keyboard to the
AdderView. Generally, Sun keyboards have more keys than PC keyboards which
have more keys than Mac keyboards. It is generally advisable to use a keyboard
with the maximum number of keys that are expected by any of the connected
computers (i.e. if you are connecting any Suns then you are recommended to use a
