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
copyright Rastergraf Corp. Additional messages will be displayed if a DVI
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.
