Microsoft KB Archive/152491

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Changes with Macintosh System 7.5.3 Update 2.0, Part 2

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The information in this article applies to:


 * Apple Macintosh System Software 7.5.3

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SUMMARY
This article lists the enhancements that are included as part of the System 7.5 Update 2.0.

This list was taken from the "New in this Update - 2" file that came with the installation disk or disc:

Note: The System 7.5 Update 2.0 includes all of the changes that were with the System 7.5 Update 1.0. These changes are listed separately in the following article in the Microsoft Knowledge Base:

"138646 Changes with Macintosh System 7.5 Update 1.0"

Changes to SimpleText
Includes SimpleText version 1.3.1, which supports QuickDraw 3D.

Changes to the Starter
This Update includes Starter version 2.8 which incorporates minor behind the scenes changes not likely to be visible to users.

Other New or Changed Components
Includes Open Transport v.1.1, a major re-implementation of the network system software for use on all 68030-, 68040-, and PowerPC-based computers except the desktop 5200, 5300, 6200, and 6300 series computers. After an Easy Install, Open Transport will be active only if it was active before the update was installed (it cannot be active on desktop 5200, 5300, 6200, and 6300 series computers). For more information, see the Open Transport Information folder, inside the Apple Extras folder.

Includes a small application called Network Software Selector (NSS), which enables users of 68030-, 68040-, and early PowerPC-based computers to choose between Open Transport and classic AppleTalk if both are installed. (You must restart the computer for the change to take effect.) PCI-based computers support only Open Transport.

NSS is in the Apple Extras folder; information on using it is built into the application. NSS is intended to ease the transition to Open Transport by allowing you to use the older networking software if there is a compatibility problem with an application and Open Transport. Once the problem is resolved, you should switch back to Open Transport.

Note: Because MacTCP is incompatible with Open

Transport v.1.1, MacTCP is disabled any

time Open Transport is selected using the

Network Software Selector. (Open Transport

uses the TCP/IP control panel instead of

MacTCP.) If, however, you reselect classic

AppleTalk, MacTCP is enabled again. Includes SerialDMA 2.0.2 for use on all PowerPC-based computers, the Centris 660AV, Quadra 660AV, Quadra 840AV, as well as the corresponding Performa and Apple Workgroup Server products. SerialDMA provides a complete rewrite of the DMA serial driver which originally accompanied these computers, thus fixing the occasional system hang, communications timeouts, poor communications performance, and other glitches. The new SerialDMA 2.0.2 driver not only corrects these problems, but also exceeds the performance and reliability standards for serial communications on the Mac OS platform (providing support for speeds of up to 230,400 baud).

SerialDMA 2.0.2 is native on the PowerPC-based computers.

Includes a new version of Apple Modem Tool (1.5.5), which supports 115.2K and 230.4K connections on SerialDMA 2.0 machines.

Includes the latest version of PC Setup (v1.0.7) for use with all DOS Compatible Mac OS computers.

Includes Screen control panel version 1.0.7. This new version does not crash if it's in the System Folder of a Macintosh SE during startup or when it's opened on any 68000-based Mac OS- based computer.

Includes File Sharing 7.6.2, which includes several improvements over previous versions. Now, when file sharing is turned on, removable disks and CD-ROM discs will automatically be shared (except for audio CDs, which will no longer be shared). To eject a removable disk or CD-ROM disc, you no longer have to turn off File Sharing, as long as no other user is currently connected to the shared volume.

Includes a faster version of the AppleShare Workstation client software. The new version performs read-ahead and write-behind caching, allowing the Finder to write to a local volume while reading from a remote volume (and vice-versa). The new version also briefly caches some information from the desktop database to avoid unnecessary hits to the disk.

Includes Apple Video Player 1.4.

Miscellaneous Fixes and Enhancements
The Shut Down warning, which appears during startup if the computer was shut down improperly, dismisses itself after two minutes so that startup isn't delayed when no one is around to read the message.

"Note: This warning can be turned off completely in the General Controls panel." Includes Macintosh Easy Open 1.1.2, which fixes delays when dragging Finder folders.

The dialog box displayed after the keyboard Power key is pressed dismisses itself (simulating a click on its Cancel button) after one minute.

Fixes a problem with the Power key. In previous versions, if the Power key was held down just a little too long, the hardware could miss the release of the key. If the next key pressed was the Command key, the hardware would mistakenly think that Command-Power had been pressed and would bring up the programmer's window (or MacsBug if it was installed).

Color Picker no longer crashes during startup. There is a problem with certain third-party SCSI drivers that mark the drive as removable at the beginning of startup and later mark it as non-removable. Because Color Picker creates an alias to itself during startup, the change to non-removable prevented the Color Picker alias from being resolved later. Color Picker now handles the failure to resolve this alias.

Fixes a problem introduced by System 7.5 Update 1.0 that prevented 2-byte characters from being used when naming a DOS disk.

Fixes a problem that allowed the Menu Manager to use an unlocked handle. This fix will eliminate some crash problems, especially when using certain pop-up menus.

Changes several video drivers to provide better support for new monitors introduced since System 7.5 was released.

Handles low-memory situations better than previous releases of Sound Manager.

Fixes a problem that allowed the sound volume to be lower after restarting than it was before restarting; volume should now be properly preserved when restarting.

The state of the Mute checkbox in the Sound control panel's Volume window is now preserved across restarts.

Fixes a problem that allowed QuickDraw to leak about 50 bytes of memory in some isolated circumstances.

Fixes a problem that allowed a nonexistent disk drive to show up in Disk First Aid.

Fixes a crash problem in the Communications Toolbox that happens if there are more than about 600 zones on a single network. The new limit is just over 8000 zones.

Fixes a problem on the 630 and 5200 series computers that would cause them to ignore the infrared remote control.

Fixes a problem that made it take two attempts to unmute the sound using the infrared remote control on 630 and 5200 series computers.

Presents a dialog box that advises users that audio CDs cannot be shared if an audio CD is selected and the "Share a Folder" or "Share a Folder (no Guest)" automated task is executed. (In the past, the system would hang in this situation.)

Fixes a bug that caused the wrong font to be used in some cases.

Fixes a problem that allowed a garbage pattern to be used when redrawing the pattern in a scroll bar.

Fixes a problem with submenus drawn too large or not drawn at all.

Fixes a problem that sometimes caused the startup progress bar to draw improperly.

Fixes a problem in WorldScript Power Adapter that could cause text to wrap randomly in Text Edit fields, or to appear garbled.

Plugged a small memory leak that sometimes occurred when resizing a window.

Files No Longer Needed
The Update automatically deletes the files listed below unless you renamed any of them, in which case, you should remove the files.

Several standalone files are now merged into the System 7.5 Update enabler or the System file. This update deletes the old (standalone) versions of the following files:


 * 040 VM Update
 * 601 Processor Card Enabler
 * 630 SCSI Update
 * CFMEUpdater
 * Color Classic Update
 * Color Classic Update
 * Display Enabler 2.0
 * EM Sound Update
 * MathLib
 * Mount IDE Drive
 * Network Software Installer (v1.5.1 and later)
 * PowerBook 150 Update
 * PowerPC Enabler
 * SCSI Manager
 * SCSI Manager 4.3 (a renamed version of SCSI Manager)
 * Serial Update 406
 * SerialDMA
 * Sound Manager
 * System Enabler 406
 * ThreadsLib
 * Workgroup Server Enabler

Several standalone files have been merged into the System 7.5.2 Update enabler. The update deletes the old (standalone) versions of the following files:


 * 7.5.2 Printing Fix
 * CFM Updater
 * PowerBook 2300c Update
 * PowerBook 5300 Enabler
 * PowerBook 5300/190 Enabler
 * PowerBook 5300/2300/190 Enabler
 * SerialDMA
 * Sound Manager
 * System Enabler 701
 * ThreadsLib

Several standalone files have been merged into or been replaced by various other pieces of the system. The update deletes the old (standalone) versions of the following files:


 * Sound & Displays (replaced by Monitors & Sound)
 * Apple Multimedia Tuner (rolled into QuickTime 2.1)
 * LaserWriter 8.0 (replaced by LaserWriter 8)
 * PowerPC Finder Update (renamed in System 7.5 Update 1.0 and merged into the Finder)
 * Finder Update (rolled into the Finder)

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words: mac m_works powermac 7.5 7.5.1 power ppc

Keywords :

Version : MACINTOSH:7.5.3

Platform : MACINTOSH

Issue type :

Technology :