X64 Xcelera-HS PX8 User's Manual
Technical Specifications
•
67
SW500: Normal/Safe Boot Mode & GEN2 Slot Workaround
The X64 Xcelera-HS PX8 powers up either in its normal state or a 'Safe Boot' mode required to load
firmware under certain conditions. See the notes for SW500-1 following the table for details.
Note: On Rev A0 of the board, this function is controlled by jumpers on J5. See below for more
information.
SW500
Switch Number
Assigned to
OFF Position
(default)
ON Position
1
Boot Mode
Normal
Safe
2
GEN2 Slot
Workaround
Disable
Active
3
reserved
4
reserved
SW500-1 Boot Mode Details
•
Normal Mode: Board powers up in the normal operating mode.
•
Safe Mode: With the computer off, move the switch to the ON position. This mode is required
if any problems occurred while updating firmware. With the switch in the ON position, power on
the computer and update the firmware again. When the update is complete, power off the
computer and move the switch to the OFF position. Power on the computer once again for
normal operation. (See
Recovering from a Firmware Update Error
" on page 26
).
SW500-2 GEN2 Slot Workaround Details
•
Normal Mode: Normal operation of the Xcelera-HS PX8.
•
GEN2 Slot Workaround: In computers with GEN2 slots and the Intel 5400 chipset. There
have been circumstances where the board is not detected properly. This issue is identified by
the status LED 1 that keeps on flashing red at boot time. In one example, with a Dell T5400 or
T7400 computer, the following message was displayed by the computer BIOS:
"Alert! Error initializing PCI Express slot
”.
•
Therefore when using such a computer, with the Xcelera SW500-2 in the ON position, the
computer should boot normally and the Xcelera should function. If this is not the case,
please contact
" on page 85
with details about your computer.
For Revision A0 Boards Only: J5 Normal/Safe Boot Mode & GEN2 Slot Workaround
Pin 1
Pin 2
Pin 39
Pin 40
J5
Normal / Safe Boot Jumper
Normal Operation:
Shorting Jumper
ON
Pin - 23/24
Safe Boot Mode:
Shorting Jumper
OFF
Pin - 23/24
PCIe Gen2 Workaround Jumper
Normal Operation:
Shorting Jumper
ON
Pin - 25/26
Gen2 Workaround:
Shorting Jumper
OFF
Pin - 25/26
…..
Pin 23-24
Pin 25-26
…..
…..
…..
Figure 27: J5 on A0 Boards – Jumpers for Safe Boot and Gen2 Slots