Xerox 4213 MICR MRP Betriebsanweisung

COAX COMMUNICATIONS BUFFER

Table E-5 shows the format of the Character Attribute (CA):

Table E-5.

0-1

00
01
10
11

Revert to the EFA
Blink character (ignored)
Reverse video character (ignored)
Underline character

2-4

xxx

Black

5-7

000
001

Revert to the EFA character set
APL DSC character set

In SCS mode, the message buffer contains SCS datastream data,
which is made up of control codes (with or without parameters)
and EBCDIC printable characters.

Following printing of the last line of data in the buffer, the print
position remains at the next character position (no automatic NL
occurs).

The printer does not use the extension attribute buffer in SCS
mode. The printer accesses the characters and control codes
from the start of the data buffer to the end in a sequential
manner.

APL characters can be sent to the printer if preceded by the
graphic escape character (X'08'). 

The XCTO emulations check SCS commands when processing
them, reporting invalid control codes and invalid parameters as
appropriate.

XEROX COAX/TWINAX OPTION (XCTO) PROGRAMMER REFERENCE

E–13