Selects serial port transmission speed. The speed must be matched on the other
side. Long or noisy lines may require lower speeds.
Data Bits
Data Bits
Parity
A parity bit can be sent with the data bits to detect some transmission errors. Even:
parity bit is 0 if the num of 1's in the data bits is even. Odd: parity bit is 0 if num of
1's in the data bits is odd. Mark: parity bit is always 1. Space: Parity bit is always 0.
Mark and Space Parity do not allow for error detection.
Stop Bits
Stop bits indicate the end of a serial data packet. ( A start bit indicates the
beginning). The standard setting is 1 stop bit. Communication with slow devices
may require more than 1 stop bit.
Flow Control
Flow control can prevent data loss from buffer overflow. When sending data, if the
receiving buffers are full, a 'stop' signal can be sent to stop the data flow. Once the
buffers are empty, a 'start' signal can be sent to re-start the flow. Hardware flow
control uses two wires to send start/stop signals.
VT-UTF8 Combo Key Support
Chapter 3 – AMI BIOS Setup
115200
7
8
None
Even
Odd
Mark
Space
1
2
None
Hardware RTS/CTS
Disabled
34