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Serial Ports: Difference between revisions

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→‎Glossary: Clarified Baud Rate description.
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==Glossary==
 
;Baud Rate
;baud rate
:is the speed at which the serial line switches between it's two states. This is not equivalent to bps, due to the fact there are start and stop bits. On an 8/N/1 line, 10 baud = 1 byte. Modems are more complex than plain serial lines due to having multiple waveforms, but for the purposes of OSDev this is irrelevant.
:the 'speed' at which transmission occurs, in characters per second
::''I'm not SerialPorts guru, but bauds is usually symbols per second on the wire, and afaik, each symbol on a RS-232 line will only carry 1 bit, so the baud rate (here) is more likely to be the bitrate than the byte-per-second speed ... note however than modems typically send many bits per baud (because you may have more than 2 waveforms used), but not necessarily 8 of them ... Someone should check the specs and confirm/correct. -- PypeClicker''
;baud rate divisor
:the number 115200
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