A.2 Hpm Jumpers; A.3 Standard I/O Module Jumpers - Compaq AlphaServer 160 User Manual

A.2 HPM Jumpers

Table A–2 lists hierarchical switch power manager (HPM) jumpers and
their functions. The HPM module has three 2-position jumpers, none of
which are normally installed.
Table A–2 HPM Jumpers
Jumper
J2
J3
J4

A.3 Standard I/O Module Jumpers

Table A–3 lists standard I/O module jumpers and their functions. The
jumper station is three-pronged and the installed position is indicated
by a silkscreen connection.
Table A–3 Standard I/O Module Jumpers
Jumper
J12
J13
J17
J18
A-2 AlphaServer GS80/160/320 User's Guide
Function, When Installed
Flash_Write_Inhibit. Prevents the hardware from writing to
flash memory.
Force_FSL. Causes the firmware to remain in the fail-safe
loader code after HPM reset.
HS_CSB_ID0. Sets ID0 of the microprocessor's CSB address
field to a 1.
Function, When Installed
Forces SRM console defaults.
Forces COM1 bypass.
SCM remains in fail-safe loader code upon reset.
Forces the SCM defaults.