Chips and Technologies, Inc.
Release Notes
OC65540/545
65540/545 VGA-Compatible BIOS
Revision: Version 2.7.5
Release Date: January 25, 1996
====================================
1. Modified the 32K BIOS to correctly set the DCLK to 28MHz in
modes 00h+, 01h, 01h+, 02h+, 03h+, 07h, and 07h+.
Revision: Version 2.7.1
Release Date: October 30, 1995
====================================
1. Modified the 32K BIOS to fix the garbage seen during mode
change.
2. Modified the BIOS to fix the ghosting problem in Text modes
by programming XR03[5]=1.
3. Removed support for text modes 60h and 61h from the 32K
BIOS.
4. Modified BIOS to fix a problem with installing Windows 95 by
programming the SR index to 6 instead of 7.
Revision: Version 2.7.0
Release Date: August 7, 1995
==================================
1. Modified the BIOS to use Clock 2 in all standard VGA CRT
modes.
2. Modified the BIOS to fix the out of sync problem in the CRT
only mode.
3. Modified the BIOS function AH=09H for Extended Packed Pixel
Mode to support the background color.
4. Fixed a problem in the Switch Display Function.
5. Modified the VESA BIOS function 4F00h so that it returns the
correct memory size.
CHIPS CONFIDENTIAL INFORMATION
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.