SBC-GX1 Technical Manual Detailed hardware description
The flat panel signals are configured by the VGA BIOS during the power up process.
The default BIOS is designed to drive the 6.5” NEC TFT panel (NL6448BC20-08) as
part of the flat panel development kit. This is a 640 x 480 color 18 bit TFT display
(Connection details are provided in
Appendix E – TFT display interface cable.) The
default BIOS is configured to drive both the CRT and flat panel interfaces
simultaneously. This can be modified using the
Integrated peripherals option in the
Setup utility (see page 39
). This option can also be used to alter the flat panel support
for different resolution displays.
If the display you have is not supported by the default BIOS, please contact Technical
Support who will be able to advise whether an updated version of the BIOS is available
for your display. See page 82
for details. There is a utility on the support CD
AWDFLASH which can be used to update the BIOS device automatically.
The support CD contains drivers for Windows 98 and NT 4.0.
Interrupt assignments
The SBC-GX1 contains two 8259 interrupt controllers, which are cascaded in the
standard PC/AT compatible format. The table below shows the IRQ routing of the
on-board devices.
IRQ Usage
0 8254 Timer
1 Keyboard
2 Cascade used for IRQ8-15
3 COM2/COM4
4 COM1/COM3
5 Audio Controller
6 Floppy Disk
7 Printer
8 Real Time Clock
9 Unused
10 COM4
11 Ethernet/COM3
12 Mouse
13 Coprocessor
14 Primary IDE
15 Secondary IDE
© 2004 Arcom Issue D 70
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