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B.3
0080H: POSTCODES
Address
Action
READ
0x080
WRITE
Reset
Postcode
Postcodes are captured in this register as they are written.
B.4
0081H: EXTENDED POSTCODES
Address
Action
READ
0x081
WRITE
Reset
Postcodes are captured in this register as they are written. Be carefull that postcodes are not
Postcode
always 16-bit and the high byte in register 81h could be unrelated to the content of register 80h.
Also, only 16-bit write to I/O 80h will write to I/O 81h. An 8-bit write to I/O 81h is ignored.
B.5
0A00H: FPGA VERSION
Address
Action
READ
0xA00
WRITE
Reset
Version
FPGA programmable logic version.
B.6
0A01H: DEBUG LED
Address
Action
READ
MfgFlag
0xA01
WRITE
MfgFlag
Reset
EnHD
Setting this bit will use led Amber0 to display hard disk activity (PATA & SATA)
Enable usage of the debug LED to display the last post code of the boot. The BIOS clear this bit
EnPost
prior to operating system lauch.
Enable TelcoClock monitoring on debug LED. Make sure EnHD and EnPost are cleared. When green:
EnClk
both clocks are present. When amber: only one clock is present. When red, no clock are present or
the TelcoClock PLD is not initialized. This is a debug mode.
Reg0/
Debug LED 0. Can be use as a debug LED or to display post code (default during boot) or hard disk
activity (default following boot) or as an end-user status/debug LED.
Amber0/
Green0
This bit tels the FPGA wich LEDs should reflect LAN activity; RJ45 LEDs or grouped LEDs. The BIOS
RJ45
should set this bit as soon as possible to reflect the configuration of the fabric LAN. 0: if the LAN
goes to the fabric or 1 if the LAN goes to the front-plate RJ45s.
A memory element used by the BIOS and test software in manufacturing.
MfgFlag
Note that this bit is cleared on a power-up but is not affected by a reset
D7
D6
D5
D7
D6
D5
D7
D6
D5
Reserved
Reserved
Reserved
D7
D6
D5
RJ45
EnHD
RJ45
EnHD
0/NA
1
0
D4
D3
Postcode
Postcode
00h
D4
D3
Postcode
Postcode
00h
D4
D3
NU
D4
D3
EnPost
EnClk
Green0
EnPost
EnClk
Green0
1
0
B-2
D2
D1
D0
D2
D1
D0
D2
D1
D0
Version
NU
NU
NU
Version
D2
D1
D0
Anber0
Red0
Anber0
Red0
0
0
0
AT8001 User's Guide
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