Control Data Corporation INFORMATION SYSTEMS TERMINAL II Hardware Maintenance Manual page 63

b) Dial telephone number that connects computer, and
listen for the computer telephone to ring,
followed by a period of no sound, and then a
high-pitched answer tone which indicates connec-
tion to the computer.
c) Set DATA/TALK switch to DATA, and hang up
telephone.
d) The terminal must be loaded with its controlware
from the PLATO system. This process takes about
1-1/2 minutes.
During this loading process, the terminal dis-
plays one of the following messages:
NOP
No operation. Indicates that the communi-
cation link between the terminal and the
PLATO system is down. Refer to section 6.
NO REPLY
Indicates that the terminal has received no
response from/the PLATO system. The termi-
nal continues to solicit a response from
the PLATO system approximately every 4
seconds until a reply is received.
LOADING FAILURE
Indicates that the loading process was
unsuccessful and the program has aborted.
Refer to section 6.
LOADING XX
Indicates a successful loading process. XX
signifies the block being loaded. This
message is followed by the Begin Display.
e) Proceed with sign-on sequence.
82100083 D 3-15
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