AIX Printer Tips: Adding Pitch 12 Support to an IBM4208 Printer

Contents

About This Document

This document describes a way to add the support for a pitch 12 font and also describes how some of the attributes in the colon file interact.

The information in this document applies to AIX Version 4.1.4 and later.

The Problem

Only courier 10 is selectable from SMIT

From SMIT:
                 TYPESTYLE and PITCH          
   Move cursor to desired item and press Enter.

   courier  10   

Nothing Prints

echo "p2" | qprt -p12 -P4208jwt
ls -l /dev/4208
-rw-r--r--   1 root     system         0 Nov 08 09:31 /dev/4208

Message in /var/spool/lpd/pio/@local

msg1.4208jwt:4208  
-----------------------------------------------------------
Fri Nov 08 09:36:23 1996 (root)
-----------------------------------------------------------

=====> MESSAGE FROM PRINT JOB 19 (STDIN.21944) <=====
0782-598 The value 1 specified in the validate op V in the
limits field for _p attribute indicates failure

How To Add the Font Name

The list of supported fonts is shown in the mU attribute.


:416:mU::%`"{ print - 'courier[10]';
/usr/bin/ls /usr/lib/lpd/pio/fonts/%Imt/*.*.* 2>/dev/null|
/usr/bin/awk -F. '{printf(\\"%%s[%%s]\\n\\",$2,substr($3,1,2));}';
}|sort -u|tr -d '\\012'"

By default this attribute allows the courier 10 pitch font, and then looks for fonts in /usr/lib/lpd/pio/fonts/ibm4208-2 directory and based on the file names adds these to the list. On my system I don't have this directory installed so I only get "courier 10" from my popup list. If this is on the install tape, then this may be the easier supported solution.

The font list must be added before creating a printer because much of the limits and SMIT data is stored in a SMIT database in /var/spool/lpd/pio/@local/custom. Thus we should make the changes in /usr/lib/lpd/pio/predef/ibm4208-2.asc.

How To Add the Font Name: Steps to Make the Changes

1. cd /usr/lib/lpd/pio/predef/

2. cp ibm4208-2.asc /tmp/ibm4208-2.asc
   Save this somewhere you can get it back if it doesn't work.

3. vi ibm4208-2.asc

4. find :416:mU:

5. Add prestige[12] to the attribute so it reads:
   :416:mU::%`"{ print - 'courier[10]prestige[12]'; /usr/bin/ls /usr/lib/lpd/pio/fonts/%Imt/*.*.* 2>/dev/null| /usr/bin/awk -F. '{printf(\\"%%s[%%s]\\n\\",$2,substr($3,1,2));}'; }|sort -u|tr -d '\\012'"
   

6. Save the changes

7. Create a new queue.

Test From the Command Line and From SMIT

1. qprt -p12 -Pqueue file

2. smit chpq

3. Select the print queue

4. Choose Option 2 Default Print Job Attributes

5. Move Cursor to TYPESTYLE and PITCH

6. Hit F4 or the DO Button

7. Choices should now show:
   • courier 10
   • prestige 12

Examining the colon File

The SMIT entries for pitch and style are combined for most virtual printers at AIX 4. This allows easier selection as important for the older dumb printers that print certain fonts in certain sizes. Newer printers probably do not need this feature, but it's there and will probably remain for some time.

Flag Attributes

• :700:_p:S[B035]I[1810552]DnE#V[%`W1]:10
  

  • Because the first field is blank, (there is a colon in column 1) The message catalog is the default pioattr1.cat
  • 700 designates the message number for lsvirprt and smit.
    • dspcat pioattr1.cat 1 700
    • PITCH (characters per inch)
  • _p is the attribute name
  • S[B035]gives the smit panel and position if displayed.
  • I[1810552] is the help information message.
  • Dn means do NOT display in smit.
  • E# means the entry will be a number.
  • V[%`W1] means Validate by running the command given by the W1 attribute. The character after the percent sing is a grave characters. If the setting is valid, W1 will return 0, if invalid it will return 1 and you will get an error message when you print or try to change the value. This is where the Op V message came from in our message file.
  • 10 is the current default value.

• :701:_s:S[B040]I[1810553]DnEnV[%`W1]:%Imu
  

  • Message from pioattr1.cat
  • Message number 701 - TYPE STYLE (name)
  • Lower in smit than the pitch, but on the same panel.
  • Informational number 1810553 for help
  • Dn - Do not display in smit
  • En - No typed entry allowed.
  • V[%`W1] - Also validated by running W1
  • Default value is determined by the mu attribute

Conglomerate Attributes

This type of attribute is to combine the input for two flag attributes to a single smit selection. In this case the _s and _p attributes are combined in the Cs attribute. SMIT ENTRY:

• :674:Cs:S[B005]I[1810500]EnC[_s,_p]R[%`W0]:-s%I_s\x27 \x27-p%I_p
  

  • B005 will be at the top of the B section of the menu.
  • En says no allowed entry from command line
  • C[_s,_p] says combine for s and p flags.
  • R[%`W0] means that a SMIT RING LIST will be generated by running (grave W0) the commands from the W0 attribute.

Work Attributes

• :090:mu::%?%G_p%{12}%=%tprestige%ecourier%;  
  

  • 90 = Type Style (name)
  • mu attribute
  • if pitch is 12 then prestige else courier

• :676:W1::if [[ -n '%#mU"%I_s\\[%I_p@$"' ]];then 
           print "0\\c";else print "1\\c";fi
  

  • This basically looks for a the values from _s and _p in the mU attribute.
  • Returns 0 when found, returns 1 when not found.

• :675:W0::
  

  The following clarifies the code a little:

  print '%ImU'|/usr/bin/awk -v sep="  " -v flags="sp" 
  'BEGIN{RS="]";}
  {if(m=match($0,"^[^\\\\[]*\\\\[[0-9]*"))s[cnt++]=substr($0,m,RLENGTH);}END
  {for(i=0;ir<cnt;i++){no=split(s[i],F,"\\\\[");
  for(j=1;j<=no;j++)
   {printf("%%s",F[j]);
    if(j+1<=no)printf("%%s",sep);
   }
   if(i+1<cnt)printf(",");
  }
  printf("=");
  for(i=0;i<cnt;i++)
    {no=split(s[i],F,"\\\\[");
    for(j=1;j<=no;j++)
      {printf("-%%s%%s",substr(flags,j,1),F[j]);
       if(j+1<=no)printf("%%s","\\047 \\047"); 
      }
    if(i+1<cnt)printf(",");
    }
  }'
  

  This goes through the mU attributes and separates out things that are separated by square brackets.

• :416:mU::%`"{ print - 'courier[10]';
  /usr/bin/ls /usr/lib/lpd/pio/fonts/%Imt/*.*.* 2>/dev/null|
  /usr/bin/awk -F. '{printf(\\"%%s[%%s]\\n\\",$2,substr($3,1,2));}';
  }|sort -u|tr -d '\\012'"
  

  This says specifically that courier[10] font can be used as well as any found in /usr/lib/lpd/pio/fonts/ibm4208-2

• :313:mt::ibm4208-2
  

  Used as the type of printer and for the font subdirectory.

• :530:tY::%S_s%"courier"%=%G_p%{12}%=%!%*%S_s%"prestige"%=%G_p%{12}%=%*%+%Pr
  

  
  :343:wH::%GmH%?%G_K%t%{10}%*%{171}%e%G_p%;%/%?%G_W%t%{2}%*%;%d
  

  Used to calculate the page width in pixels.

• :148:cp::%Zs%?%G_K%t%{16}%Pp%Iai%e%G_p%{12}%=%t%{8}%Pp%Iec%e%Zp%Iat%;
  

  Command to generate part of the output to set the printer to the right size. This actually puts a calculated value depending on the values of _K and _p into a temporary p variable which is used later by attribute ec.

Summary