OSVIATWN - DISTORTED WIN-OS2 FULL SCREEN SESSIONS WITH ATI MACH 64 
UNDER OS/2 WARP 4
10/14/96
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Distorted WIN-OS2 Full Screen sessions with ATI Mach 64 under 
OS/2 Warp 4
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Please Read Entire Document for Full Explanation of Procedures
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DESCRIPTION

When using an ATI Mach 64 video card, WIN-OS/2 Full Screen sessions 
appear fuzzy or distorted. However, WIN-OS/2 Window sessions appear 
fine.  

This occurs because WIN-OS/2 full screen sessions use the video 
settings listed in the SYSTEM.INI file; windowed sessions do not.

RESOLUTION

To correct this blocking problem: 

1. Open a WIN-OS/2 Window session.

2. Select File, then Run.

3. Type SYSEDIT, then press OK.

4. In the \OS2\MDOS\WINOS2\SYSTEM.INI file, look for the [mach] section.
   Add the line BLOCKSIZE=OFF to this section.

5. Save the file and exit the System Configuration Editor window.

6. Close the WIN-OS/2 Window session.



warp4
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