User`s manual

When you upgrade to a LaserWriter IIntx, you also have the option of increasing the printer's
memory and of adding one or more dedicated hard disks for font management. The benefits of and
procedures for doing so are described in this appendix.
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Memory upgrades
You can increase the RAM of the LaserWriter IIntx up to 12 MB. You can also add a font
expansion card. These memory upgrades are not possible with the LaserWriter IInt.
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RAM expansion
You can upgrade the RAM of the LaserWriter IIntx in increments of 1 or 4 MB, up to the 12 MB
maximum. The necessary upgrade kits can be installed by your authorized Apple dealer.
Adding RAM means that more fonts can be downloaded to the printer at any one time. It also
increases the space available for font caching. Before the LaserWriter IIntx can print, it
converts the PostScript outline fonts into bitmaps, which it stores (caches) in RAM. When the
demand for RAM exceeds the supply, the printer discards the less recently used bitmaps in
favor of the newer ones. When the bitmaps are needed again, the printer must rebuild them. The
additional RAM lessens the need for this time-consuming step.
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The font expansion card
To expand font capacity in ROM, you'll need to insert an add-on circuit board into the expansion
slot of the LaserWriter IIntx. See your authorized Apple dealer for details.
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Adding one or more hard disks
You can attach one or more SCSI hard disks to the LaserWriter IIntx. Like the RAM upgrade, the
addition of a hard disk increases the space available for font storage and font caching, but the
increase in space and therefore in font handling flexibility is much greater.
You initialize the disks and download fonts to them using the LaserWriter Font Utility
application on the LaserWriter IInt/ntx Installation Disk. The application's help screens
contain all the information you need for all procedures.
When you download a font and you have a hard disk attached, you can choose to download it either
to the disk or to RAM. Downloading it to the disk stores it there permanently (or until you
remove it). This process saves time because you won't have to download it repeatedly over the
network. It also saves space on your startup disk, because the font is now on the printer disk
rather than in your System Folder.
Font caching is handled automatically by the Font Utility application. Because you can chain
together several SCSI hard disks, the space available for font caching is essentially unlimited,
and thus the bitmaps are always available.
Initialization allots 20 percent of total disk space to font storage and 80 percent to font caching.
The LaserWriter IIntx automatically increases the storage percentage as needed. The Font
Utility application warns you when the percentage is high enough to threaten font caching