GE 235 System Manual page 87

Supply own timing source for clocking bits of a received character.
Receive inputs from interface adapters o r digital subsets.
Assemble data in GE-235 Computer memory for processing.
Notify main computer program that data i s ready for processing.
Generate word parity for character to be transferred to GE-235.
Signal GE-235 a t the end of each finite character message block. (This
is
accomplished by
recognition of a pre-selected end of message character code.)
Transmit Mode
Recognize request from main computer program to transmit data to a designated remote
station.
Select the addressed remote station.
Initiate data flow from the GE-235 memory to remote station.
Accept parallel-bit code from GE-235 central processor and convert to s e r i a l form.
Add special bits necessary for character transmission.
Check parity on characters received from GE-235 Computer.
Generate parity bit for seven and eight-channel code characters to be transmitted.
Supply own timing source for transferring character bits serially into the transmission
system.
/
Supply transmissionpCltput to interface adapters o r digital subsets.
CHECKING FEATURES
Odd parity check when using seven and eight-channel codes.
Automatic "Operator E r r o r Code" detection.
Two-to-thirty second delay alarm prevents noise pulses from giving false indication of
remote station's request to transmit. Alarm will normally be s e t for a 15 second delay.
Automatic a l e r t halt upon detection of command word parity e r r o r .
XI-3