The Power Macintosh 7200, 7500, 8500, and 9500 series computers all use the Apple Shared Library Manager (ASLM) extension which contains code for many system resources. If your computer is started with the extensions off, the Shared Library Manager is disabled, making system resources unavailable to execute serial communications. Other software which depends on ASLM would include QuickTake camera software and GeoPort software.
To avoid this, you need to update to System 7.5.3 using System 7.5 Update 2.0, which is available on the online services. In System 7.5.3 the serial ports will remain available in this disabled environment. Serial attached (non-AppleTalk) printers will function normally. Basic modem communications programs, such as MacTerminal, SITcomm, and White Knight, should also be usable.
* "Where To Find Apple Software Updates" - Lists online services for free Apple software updates.
* "Obtaining Apple Product Support in the USA" - Lists 800 numbers and online services for software updates, Apple support information, and a subset of the Apple Tech Info Library.
Article Change History:
10 Apr 1996 - Removed keyword.
13 Mar 1996 - Added info about update.
09 Feb 1996 - Updated with future fix information.