Compaq AlphaServer ES40 Technical Information Seite 341

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Jumpers and Switches B-5
Table B–2 TIG/SROM Jumper Descriptions
Jumper Description
J21 1–2: Load TIG from flash RAM (default)
2–3: Load TIG from serial ROM. This setting allows you to load
the TIG if the flash RAM is corrupted.
J20 Must be in default positions over pins 1 and 2 to enable FSL.
FIR_FUNC2 (bit 2)
1–2 = 0, 2–3 = 1
J22
Jumper for enabling fail-safe loader (FSL)
FIR_FUNC1 (bit 1)
1–2= 0, 2–3= 1
J23 Must be in default positions over pins 1 and 2 to enable FSL.
FIR_FUNC0 (bit 0)
1–2= 0, 2–3 = 1
Firmware Function Table (FIR_FUNC)
Bits 210 Meaning
000 Normal
001 Prevent flash loads. Load from SROM.
010 Load from floppy
111 Lock console. Prevents the writing of flash from CPUs.
Switchpack E296 sets the clock speed for the system motherboard. The settings
should not be changed.
SW1
SW2
SYS_EXT_DELAY1 (off)
SYS_EXT_DELAY0 (on)
SW3 SYS_FILL_DELAY (off)
SW4 CPU_CFWD_PSET (off)
SW5
SW6
PCI_CLK_DIV_IN1 (off)
PCI_CLK_DIV_IN0 (on)
SW7
SW8
SW9
SW10
Y_DIV3 (on)
Y_DIV2 (on)
Y_DIV1 (off)
Y_DIV0 (off)
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