32 Line Matrix Printer Code V Programmer's Reference Manual

Command Parameters

The Code V buffer holds, and can process, approximately 64K characters in a

single graphics command sequence. However, if a single command

sequence exceeds the buffer capacity, you can use the Interrupt command

(page 90). The Interrupt command breaks the command sequence and

specifies where the sequence begins printing again.

Command Parameters

Most commands have a number of variable parameters for which input is

required. Throughout this manual, actual commands required for input are

shown exactly as they must be entered, while all the variable parameters

associated with that command are shown in

italics.

Brackets

Paired brackets [ ] indicate an optional command parameter. You can choose

to use or not use such a command parameter, but

do not enter the brackets

the command sequence.

Spaces

Spaces are used in the general command formats to visually separate

individual command parameters. You must supply the information for the

command parameter, but

do not enter the spaces

in the command sequence;

they are shown simply as a visual aid to illustrate where one command

parameter ends and another begins.

Comma

The Code V accepts commas as parameter delimiters. Commas are often

helpful in distinguishing the various numeric parameters within the command

sequence. Commas are not allowed immediately after the SFCC or before the

first data character. Commas within the command sequence are optional

unless they are a part of the command format (i.e., IBARC, IFONT,S, etc.). If

used, commas occupy character spaces in the buffer and require processing

time. In the examples throughout this manual, commas are used in the

command sequences.

Terminator

Each command line, or command sequence,

must

be followed by a valid

terminator. Valid terminators are as follows: carriage return (CR, hex 0D), line

feed (LF, hex 0A), form feed (FF, hex 0C), vertical tab (VT, hex 0B), EVFU

commands (hex 10-1F), 01 and hex 06, and PI line commands. A complete

command sequence includes the very first character (including the SFCC) to

and including the terminator.

Certain terminators have different functional effects based on their use with

standard graphics commands or within extended graphics command

sequences. For example, CR, FF, and LF function as sequence terminators

within an extended graphics command sequence.