Xerox WORKCENTRE 7120 Reference Manual

Function Read Binary Read Automati c Read Binary Read Automatic Read Binary Read Automatic Read Binary Read Automati c Read Binary Read· Automati c Read Binary Read Automatic Model 7120 Normal stocker Normal stocker Stocking Actiont AI ternate stocker 1 AI ternate stocker 1 Alter ...

EI Segundo, California 90245 ~13 679-4511 Xerox Card Readers Models 7120/7121/7122/7140 Reference Manual 90 09 70E November 1970 Price: $1.00 XEROX Printed in U.S.A. ...

May, 1970). A change in text from that in the previous manual is indicated by a vertical line in the margin of the affected page. RELATED PUBLICATIONS Title Publication No. Xerox 530 Computer/Reference Manual 90 19 60 Xerox Sigma 2 Computer ...

(Models 7121/7122) 19 Introduction Reader Halted 19 Reader Running 19 2. FUNCTIONAL DESCRIPTION 2 Card File Loading Procedure (Model 7140) 19 Reader Ha I ted 19 Data Representation 2 Reader Running 19 EBCDIC Card Format 2 Card File Unloading Procedure (Model 7140) __ 19 Binary Card Format 2 Reader ...

INTRODUCTION Xerox Models 7120/7121/7122/7140 Card Readers are capable of reading standard 80-column tabulating cards conforming to the Electronic Industries Association (EIA) punched card standard RS-292. Cards are read serially, column by column, in either of two read modes: binary (absolute) or automatic (EBCDIC). Automatic read mod ...

DATA REPRESENTATION A single 80-column card can contain data in either of two formats: EBCDIC or binary. EBCDIC CARD FORMAT In the EBCDIC card format there are 256 val id punch con- figurations for a single card column (see Appendix A), each of whi ch is translated into an 8-bit code in the range 0- 25510(0016-FF16). Thus, the EB ...

The initial state of the card reader depends on its power status. The complete absence of power to the card reader subsystem (that is, the absence of its prime ac power and system dc power) effectively removes the card reader from the controll ing system. All attempts to access the card reader result in a response of "no input/output addre ...

verify error (Model 7140-02) has occurred, in which case the card is directed to the alternate stacker and the controlling system is notified of the error with the read verify error indicator. 4. The Read order selected an alternate stacker uncondi- tiona

y for this card, in which case the card is direct ...