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146 Appendix D: Matrox 4Sight GPm (Bay Trail) BIOS reference
Item
Options
Stop Bits
1 Bit*
2 Bits
Flow Control
None*
RTS/CTS
XON/XOFF
Item
Options
FACP - RTC S4 Wakeup
Disabled
Enabled*
APIC - IO APIC Mode
Disabled
Enabled*
DSDT - ACPI S3
Disabled
Enabled*
DSDT- ACPI S4
Disabled
Enabled*
BGRT - ACPI BGRT
Disabled
Enabled*
Meaning
This item allows you to set the number of extra data bit(s) (1 or 2) that are added to each character to indicate
the end of the character.
This item allows you to set the signal to use to pause and resume the transmission of data.
By selecting None, no flow control is performed.
By selecting RTS/CTS, the serial port will send a request to send (RTS) signal. If the line is clear, the
connected device sends a clear to send (CTS) signal. Once received, your unit will begin transmitting data.
By selecting XON/XOFF, the connected device will send a transmitter-on (XON) signal. As its buffers get full, it
will send a transmitter-off (XOFF) signal to your unit and your unit will stop transmitting. When it is ready to
receive again, the connected device will send a transmitter-on (XON) signal.
ACPI Table/Features Control submenu
The ACPI Table/Features Control submenu allows you to control hibernation
mode and set options of the Advanced Configuration and Power Interface (ACPI).
Meaning
This item allows you to enable or disable the timer-controlled wake up from sleep mode S4. S4 mode is also
known as hibernation, sleep state S4, or suspend to disk.
By selecting Disabled, it will not be possible to wake the operating system from S4 sleep mode using an
operating system alarm.
By selecting Enabled, the operating system will wake up from S4 sleep mode at the time set in the operating
system alarm.
This item allows you to enable or disable the use of the input/output ACPI advanced programmable interrupt
controller (APIC). APIC provides more IRQs and faster interrupt handling.
APIC is supported by Microsoft Windows Embedded Standard 7, and it is recommended that users of this
❖
operating system set this item to Enabled (default).
This item allows you to enable or disable S3 (sleep or standby) state. While RAM remains powered, HDD will
go to sleep and stop receiving power. This has no effect on an SSD.
This item allows you to enable or disable S4 (Hibernation or suspend to disk) state. All content of the main
memory is saved to non-volatile memory (such as a hard drive) and the device is powered down.
This item allows you to enable or disable the Boot graphics resource table (BGRT). The BGRT is a dynamic
table that enables Boot firmware to provide the operating system with a pointer to the location in memory
where the Boot graphics image is stored.
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