72 lines
3.8 KiB
HTML
72 lines
3.8 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<title>ASCII</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rzaluascii"></a>
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<h4 id="rzaluascii">ASCII</h4>
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<p>There is no formal structure controlling the use of the American National
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Standard Code for Information Interchange (ASCII) data stream to control printers
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attached to systems providing ASCII support. Control of page printers, like
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the IBM® 3812, is done by using page map primitives (PMPs), which are a set
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of commands or basic instruction set of these printers when attached in ASCII
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mode. ASCII data sent to a page printer is translated into PMPs. The page
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printer composes the page of data in its internal memory or page map. Two
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page orientations (portrait and landscape) as well as four print directions
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are supported. Complexity of the printed data is determined by the application
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print program, which can set the pels on explicitly in the page set, or implicitly,
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by instructing the printer to generate characters or vectors (lines). Fonts
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available for printing are stored on the printer's microcode or font diskette.
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Most page printers support macros, which are a saved list of PMP commands,
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avoiding the necessity for the application program to send a string of individual
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commands each time a particular printed function is required.</p>
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<p>There are five basic categories of PMP commands: </p>
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<dl>
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<dt class="bold">Page commands</dt>
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<dd>Set overall page parameters, such as size and orientation
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</dd>
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<dt class="bold">Cursor commands</dt>
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<dd>Move the cursor on the page map
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</dd>
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<dt class="bold">Font commands</dt>
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<dd>Manage fonts within the page printer
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</dd>
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<dt class="bold">Generation commands</dt>
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<dd>Create pels on the page map
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</dd>
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<dt class="bold">Macro commands</dt>
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<dd>Allow strings of other commands to be saved for later processing.
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</dd>
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</dl>
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<p>Printing capabilities and functions in ASCII attach mode are governed by
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individual application programs that are written to suit the capabilities
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of specific printers (or printers that provide an emulation of that printer).
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There is no architectural data stream standard to which ASCII printers can
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conform in the interests of uniformity. ASCII printing applications are therefore
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totally printer dependent.</p>
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<p>On i5/OS, ASCII printing support is provided by translating iSeries™ server EBCDIC
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characters to the ASCII equivalents.</p>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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