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Important: This document is part of the Legacy section of the ADC Reference Library. This information should not be used for new development.

Current information on this Reference Library topic can be found here:

NOTE: This Technical Q&A has been retired. Please see the Technical Q&As page for current documentation.

LaserWriter 7.5.2 Printing Update 1.1


Q: What does the 7.5.2 Printing Update 1.1 update? Why do I need it?

A: This extension fixes a printing problem that may occur on Power Macintosh 7200, 7500, 8500, and 9500 computers using System 7.5.2. Without this fix, your computer may freeze if you attempt to print on a network-based printer that is already busy, and it may be necessary to restart your computer.

The update contains a new version of the LaserWriter driver (8.3.2) and also a fix to serial DMA. The changes fix the ATP and PAP networking protocol layers.

The updates you will need are:

7.5.2 Printing Update 1.1 and Open Transport 1.0.8.

An updated version of the PAP.WrkStation.o library will be distributed on a future version of the Mac OS SDK and developers who have licensed the library will be notified via email when the new library is available.

[Nov 22 1995]


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