User`s manual

Rastergraf

2-18 Installing Your Peritek Graphics Board

x86 Image Features:

Support for the 16 standard DOS modes as well as 25 extended VESA

modes. See the complete list below. Other extended VESA modes may be

added in the future. All standard DOS, VESA and VESA32 functions are

supported including DVI, refresh rate, power management and DDC.

The Sync-On-Green modes supports the standard DOS modes with

"XOR" composite sync and VESA modes with true serrated / equalized

composite sync with pedestal. This is a separate image, selectable by the

JP101 jumper.

The BIOS code will search for and initialize the DVI chip, if that option is

installed on the E3 board. The DVI output is simultaneous with the analog

output, so either monitor plugged into the E3 will work. In the case of

Sync-On-Green image and the E3 has the DVI option installed and a DVI

monitor is connected then the Sync-On-Green will be disabled, as it is not

compatible with DVI. If a DVI monitor is not detected Sync-On-Green

will not be disabled, but if a DVI monitor is later connected it may not

display properly.

During boot, the BIOS will display a message screen for 10 seconds

before relinquishing control back to the system BIOS. This screen will

identify the Borealis board BIOS, the revision and build date, and

option is found, if a DVI monitor is connected, if it is a Sync-On- Green

image, if the Sync-On-Green is disabled due to a DVI monitor being

detected, and a warning if the motherboard is found to not be fully PCI

compliant. Other diagnostic messages may be added in the future.

A TSR image is also available. In the case of booting DOS this allows

switching to a different (e.g. more current) version after boot, or switching

to or from Sync-on-Green mode. This is recommended for testing only,

the longer term action is to reprogram the image, which can be done at the

factory, or in the field in some cases.

Note that both analog (RGB) and DVI are supported by the BIOS code.

Connection to a DVI monitor is detected and the appropriate register

values are set without the need to have the user set any special flags or

jumpers.