Dell OptiPlex System BIOS, A04

The following problems in the A03 BIOS were corrected to generate the A04 BIOS:

1. ISA Shadow I/O bit in bridges.

2. Prefetchable memory support for devices behind bridge.

3. Make PS/2 mode default for on-board parallel port.

4. LPT Port detection fix.

5. Disable DAC snoop for Oxygen card DAC.

6. Assign Non-VGA I/O to bridge for VGA behind the bridge.

7. Allow user to adjust boot order from FD-PNP-HD to FD-HD-PNP.

8. Fix auto power down possibility at power-up.

9. Force parallel port to allow IRQ to float.

10. Corrected wrong byte order in PCI video ROM class code field.