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Chapter 4: BIOS
Terminal Type
Use this feature to select the target terminal emulation type for Console Redirection. Select
VT100 to use the ASCII character set. Select VT100+ to add color and function key support.
Select ANSI to use the extended ASCII character set. Select VT-UTF8 to use UTF8 encoding
to map Unicode characters into one or more bytes. The options are VT100, VT100+, VT-
UTF8, and ANSI.
Bits Per Second
This item sets the transmission speed for a serial port used in Console Redirection. Make
sure that the same speed is used in the host computer and the client computer. A lower
transmission speed may be required for long and busy lines. The options are 9600, 19200,
57600, and 115200 (bits per second).
Flow Control
Use this item to set the flow control for Console Redirection to prevent data loss caused by
buffer overflow. Send a "Stop" signal to stop sending data when the receiving buffer is full.
Send a "Start" signal to start sending data when the receiving buffer is empty. The options
are None, Hardware RTS/CTS, and Software Xon/Xoff.
Data Bits
Use this feature to set the data transmission size for Console Redirection. The options are
7 (Bits) and 8 (Bits).
Parity
A parity bit can be sent along with regular data bits to detect data transmission errors. Select
Even if the parity bit is set to 0, and the number of 1's in data bits is even. Select Odd if the
parity bit is set to 0, and the number of 1's in data bits is odd. Select None if you do not want
to send a parity bit with your data bits in transmission. Select Mark to add a mark as a parity
bit to be sent along with the data bits. Select Space to add a Space as a parity bit to be sent
with your data bits. The options are None, Even, Odd, Mark and Space.
Stop Bits
A stop bit indicates the end of a serial data packet. Select 1 Stop Bit for standard serial data
communication. Select 2 Stop Bits if slower devices are used. The options are 1 and 2.
ACPI Settings
High Precision Event Timer
Select Enabled to activate the High Performance Event Timer (HPET) that produces periodic
interrupts at a much higher frequency than a Real-time Clock (RTC) does in synchronizing
multimedia streams, providing smooth playback and reducing the dependency on other
timestamp calculation devices, such as an x86 RDTSC Instruction embedded in the CPU.
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