AMT Datasouth ACCEL-6300, User Manual

Page: 181 / 257

User's Guide
D-2 Code Sets
AMT Datasouth and Diablo 630 Code Set
The first part of this appendix describes the AMT Datasouth Datasouth
and Diablo 630 code set. The printer responds to this code set when
either of these emulations is active.
Character Codes
Most of the 256 8-bit codes that a computer can send to the printer are
assigned a printable character (see table D-1). When the printer receives
a character code, it prints the assigned character at the current print posi-
tion and moves the current print position one character space to the right.
Codes 0 to 32 and 128 to 159 decimal are assigned control functions that
override the printable characters. These codes are called
control codes .
To print the characters assigned to control codes, it is necessary to use a
special code sequence that tells the printer to ignore control functions and
print the assigned characters.
One code that is assigned a control function is especially important to the
printer––code 27 decimal––which is the ASCII ESCape code. This code
tells the printer that an
escape sequence is beginning. An escape
sequence is a series of codes that performs a specific printer function.
When a code is sent as part of an escape sequence, the assigned charac-
ter doesn't print.
Printing Characters Assigned to Control Codes
Although there are several control codes and escape sequences in the
code set that enable the printing of characters assigned to control codes,
the GS control code is recommended. The GS control code enables the
printing of the character assigned to any code. Just send a GS code and
then the desired character code. The ESC Y sequence prints the charac-
ter assigned to the SP control code and ESC Z prints the character
assigned to the DEL control code.
These codes and sequences are described later in this appendix.
User's Guide
D-2 Code Sets
AMT Datasouth and Diablo 630 Code Set
The first part of this appendix describes the AMT Datasouth Datasouth
and Diablo 630 code set. The printer responds to this code set when
either of these emulations is active.
Character Codes
Most of the 256 8-bit codes that a computer can send to the printer are
assigned a printable character (see table D-1). When the printer receives
a character code, it prints the assigned character at the current print posi-
tion and moves the current print position one character space to the right.
Codes 0 to 32 and 128 to 159 decimal are assigned control functions that
override the printable characters. These codes are called
control codes .
To print the characters assigned to control codes, it is necessary to use a
special code sequence that tells the printer to ignore control functions and
print the assigned characters.
One code that is assigned a control function is especially important to the
printer––code 27 decimal––which is the ASCII ESCape code. This code
tells the printer that an
escape sequence is beginning. An escape
sequence is a series of codes that performs a specific printer function.
When a code is sent as part of an escape sequence, the assigned charac-
ter doesn't print.
Printing Characters Assigned to Control Codes
Although there are several control codes and escape sequences in the
code set that enable the printing of characters assigned to control codes,
the GS control code is recommended. The GS control code enables the
printing of the character assigned to any code. Just send a GS code and
then the desired character code. The ESC Y sequence prints the charac-
ter assigned to the SP control code and ESC Z prints the character
assigned to the DEL control code.
These codes and sequences are described later in this appendix.