21-6
CPU power management
PC-510 user’s manual
Refer to the default .PMI file in the Power management configuration
section in this chapter for all of the power management options.
STANDBY mode
is similar to hardware DOZE mode, except that it is
firmware controlled and devices may be power managed as well as the
CPU clock. STANDBY is controlled by software, such as POWER.EXE.
Since the CPU may still be executing in STANDBY mode, access events
may RESUME the system in addition to external inputs, such as inter-
rupts. The firmware must configure the chipset to report these events to
the firmware via an SMI. This allows the hardware to restore the CPU
clock while notifying the firmware to restore power to the managed de-
vices. On RESUME from STANDBY mode, all devices which cannot
generate an access SMI are powered up and those which can generate an
access SMI are powered up if specified in CMOS. Any device access or
specified interrupt can cause the system to RESUME.
How to initiate the STANDBY option
1. In the PC-510 SETUP and in a .PMI file, enable power management and
select the following options:
SETUP:
Power Management:
ENABLED
DOZE Clock (Slow, Stop):
SLOW
Time Updated After Suspend:
ENABLED
TEST.PMI:
pmi-enable=Y
Enables the power management
standby-delay=xx
Sets delay time before STANDBY
(x=0-31 minutes)
fdd-to=xx
Sets the on-card (LPT1) floppy disk drive
time-out value (x=0-31 minutes)
hdd-to=xx
Sets the hard drive time-out value
(x=0-31 minutes)
COM1-to=xx
Sets the COM1 time-out value (x=0-31 minutes)
COM2-to=xx
Sets the COM2 time-out value (x=0-31 minutes)
Set the time delay, in minutes, for the “standby-delay” option and devices
to be powered down, such as drives and serial ports.
Note
The hard drive and floppy drives are actually controlled by firmware and
not by software such as POWER.EXE. The floppy must be on-card, con-
trolled from the LPT1 port.
2. In the same .PMI file, select any signal that will cause the system to
resume. The options only include IRQs.
Summary of Contents for PC-510
Page 7: ...Notice to user PC 510 user s manual ...
Page 17: ...xii Contents PC 510 user s manual ...
Page 23: ...About this manual PC 510 user s manual ...
Page 25: ...Overview of Section 1 PC 510 user s manual ...
Page 35: ...2 2 Quick start PC 510 user s manual Figure 2 1 PC 510 component diagram ...
Page 45: ...2 12 Quick start PC 510 user s manual ...
Page 55: ...3 10 SETUP programs PC 510 user s manual ...
Page 59: ...4 4 Save and run programs PC 510 user s manual ...
Page 61: ...Overview of Section 2 PC 510 user s manual ...
Page 73: ...5 12 Serial ports PC 510 user s manual ...
Page 77: ...6 4 LPT1 parallel port PC 510 user s manual ...
Page 83: ...7 6 Console devices PC 510 user s manual ...
Page 119: ...13 8 CRTs and flat panels PC 510 user s manual ...
Page 123: ...14 4 GPS interface PC 510 user s manual ...
Page 125: ...15 2 PC 104 expansion PC 510 user s manual ...
Page 127: ...Overview of Section 3 PC 510 user s manual ...
Page 131: ...16 4 Watchdog timer and hardware reset PC 510 user s manual ...
Page 147: ...18 8 Transferring files remote disks PC 510 user s manual ...
Page 177: ...21 22 CPU power management PC 510 user s manual ...
Page 181: ...22 4 Troubleshooting PC 510 user s manual ...
Page 183: ...Overview of Section 4 PC 510 user s manual ...
Page 203: ...A 20 Technical data PC 510 user s manual ...
Page 231: ...B 28 Software utilities PC 510 user s manual ...