Honeywell 400 Series Hardware Manual page 24

Operation
COde FunCtion
100000 Resets all resettable statuses in the subsystem
and sends the remaining status to the central
processor.
100100 Feeds one card from the h0pper.
Operational Instructions
An on-line' instruction is one whose execution requires the card reader to be in the busy
state. ~
These instructions are:
Read Card Binary
Read Card Alphanumeric
Read Card Mixed.
INSTRUCTION INITIATION. When the card reader receives any one of these three
instructions, the resettable status conditions are reset. Major status then either indicates
the card reader has become busy as a result of accepting the instruction or the instruction
has been rejected. If the instruction is rejected, the following major status conditions are
reflected:
Attention
Instruction Rejected .
INSTRUCTION EXECUTION. The card reader completes the instruction sequence and
then begins execution of the instruction by feeding the card from the hopper onto the card
track. The reader goes into the mode of operation indicated by the instruction.
0 If the instruction is to read a binary card, the card reader goes into the binary mode
of operation and handles each column as containing two binary characters of data.
0 If the instruction is to read a card punched in the Hollerith format, the card reader
goes into the alphanumeric mode of operation and handles each column as containing
only one character of data.
0 If the instruction is to read a card in the mixed mode of operation, the card reader
looks for the identifying 7 and 9 punches in column 1 to indicate that the card is to
be read in the binary mode; if there are no 7 and 9 punches, the card is read in the
alphanumeric mode.
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