ICCIIV.9
The two hexadecimal FE bytes signal the beginning of a
packet, and the FD byte signals the end. <Code> is the con-
trol code sent by the computer to the rig, which determines
the action that the rig will take. In some cases, the
receiving rig will include a control code in its response to
the sender; see the section "Control Codes and Responses"
below. <TX> is the address of thng sent.
When a rig responds to a data packet, it addresses that
response to the <TX> in the packet. Thus, if your computer
(Of course, the computer can lie about its address and trick
one rig into talking to another!) Your computer should use
its own uniqu There are two control codes that can cause any rig on the
network to respond when sent with <RX>=0; I discuss these
CONTINUED IN FILE ICCIIV.3
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