Driver: Cirrus Logic GD5434
Last Update: December 18, 1997
Availability Information
A version of this driver is on the OPENSTEP CD-ROM
An updated release version of this driver, version 4.03, is avaiable on Apple's FTP servers at:
ftp://ftp.info.apple.com/Apple_Support_Area/Apple_Software_Updates/MultiCountry/Enterprise/openstep/drivers/released/CLGD5434.pkg.compressed
Driver Name / Installer .pkg: CirrusLogicGD5434DisplayDriver
Driver Type: Display
Driver Scope: Generic-Chipset
Supported Components: Cirrus Logic GD5430, Cirrus Logic GD5434, Cirrus Logic GD5436, Cirrus Logic GD5446
PC Bus / Interface Supported by Driver*: Integrated, PCI, VL-Bus
General Overview notes: This driver is intended to support on-board implementations of GD5434 as well as add-on adapters.
Supported Products / Add-on Adapters:
Diamond SpeedStar 64 (PCI)
Orchid Kelvin 64 (with GD5434)
Supported Products / Systems (ie integrated into PC System):
Elonex WS4100
Intel Premier (with integrated GD5434)
HP Vectra XM Series3 (not tested but reported to work)
Special Features of Driver / Driver Notes:
Because this chip has an integrated RAMDAC with only an 8 bit palette, Preferences's Brightness slider (and hardware gamma correction in general) doesn't work for any non-8 bit modes. Also 32-bit color modes (where supported) look dark. There is no fix for these problems.
This device driver provides information in the Configure application's help panel. Choose Info>Help from the Configure menu and scroll down to find this device driver's help topic.
Display Driver Details
Supported Connectors: 15-pin High Density (VGA)
Access Mode: Linear Framebuffer
Adapter Memory: 1MB VRAM, 2MB VRAM
Display Modes (Number in () after resolution indicates frame buffer size required)
32 Bit Color Modes*:
640x480 (2MB+), 800x600 (2MB+)
16 Bit Color Modes*:
1024x768 (2MB+), 1152x864 (2MB+), 800x600 (1MB+)
8 Bit Color / Greyscale Modes*:
1024x768 (1MB+), 1280x1024 (2MB+), 800x600 (1MB+)
Known Problems
Cirrus Logic GD5430 and GD5436 are not supported but is reported to work with this driver.
The GD5436 & GD5446 do not support 32 bit color modes. Only 8 & 16 bit modes are available for adapters based on these chips.
Driver Version Notes
3.31 - Added support for PCI cards and 8 bit color
4.00 - Released on OPENSTEP 4.0 User CD-ROM
4.01 - Added support for GD5446 chipset
* - Indicates information that is inclusive of the entire capability of this driver. Not all devices supported by this driver may include all features listed.
Product Vendor
Cirrus Logic, Inc.
3100 West Warren Avenue
Fremont, CA 94538
510-623-8300
fax: 510-252-6020
URL: www.cirrus.com