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Fix the typos listed in PR# 1511, plus a few others.

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Submitted by:	Mitsuru IWASAKI <iwasaki@pc.jaring.my>
This commit is contained in:
Mike Pritchard 1996-08-21 19:22:04 +00:00
parent 0e6705d4e0
commit 05c825614c
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=497
1 changed files with 9 additions and 9 deletions
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18
handbook/uart.sgml
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@ -1,4 +1,4 @@
<!-- $Id: uart.sgml,v 1.2 1996-02-27 15:57:51 jfieber Exp $ --> <!-- $Id: uart.sgml,v 1.3 1996-08-21 19:22:04 mpp Exp $ -->
<!-- The FreeBSD Documentation Project --> <!-- The FreeBSD Documentation Project -->
<!-- <!--
@ -33,7 +33,7 @@
"S" if it supports Synchronous communications. Both forms are "S" if it supports Synchronous communications. Both forms are
described below. described below.
Some common acryonyms are: Some common acronyms are:
<quote>UART Universal Asynchronous Receiver/Transmitter</quote> <quote>UART Universal Asynchronous Receiver/Transmitter</quote>
<quote>USART Universal Synchronous-Asynchronous Receiver/Transmitter</quote> <quote>USART Universal Synchronous-Asynchronous Receiver/Transmitter</quote>
@ -297,7 +297,7 @@ Pin Pin Symbol Symbol
<sect3><heading>Bits, Baud and Symbols</heading> <sect3><heading>Bits, Baud and Symbols</heading>
<p>Baud is a measurment of transmission speed in asynchronous <p>Baud is a measurement of transmission speed in asynchronous
communication. Because of advances in modem communication communication. Because of advances in modem communication
technology, this term is frequently misused when describing technology, this term is frequently misused when describing
the data rates in newer devices. the data rates in newer devices.
@ -505,10 +505,10 @@ Pin Pin Symbol Symbol
"N" DIP (dual inline package) through hole straight lead type "N" DIP (dual inline package) through hole straight lead type
"V" LPCC (lead plastic chip carrier) J lead type</verb> "V" LPCC (lead plastic chip carrier) J lead type</verb>
The "<em>g</em>" is the product grade field. If an "I" preceeds The "<em>g</em>" is the product grade field. If an "I" precedes
the package-type letter, it indicates an "industrial" grade part, the package-type letter, it indicates an "industrial" grade part,
which has higher specs than a standard part but not as high as which has higher specs than a standard part but not as high as
Miltary Specification (Milspec) component. This is an optional field. Military Specification (Milspec) component. This is an optional field.
So what we used to call a NS16550AFN (DIP Package) is now called a So what we used to call a NS16550AFN (DIP Package) is now called a
PC16550DN or PC16550DIN. PC16550DN or PC16550DIN.
@ -526,7 +526,7 @@ Pin Pin Symbol Symbol
In internal modems, the modem designer will frequently emulate the In internal modems, the modem designer will frequently emulate the
8250A/16450 with the modem microprocessor, and the emulated UART will 8250A/16450 with the modem microprocessor, and the emulated UART will
frequently have a hidden buffer consisting of several hundred bytes. frequently have a hidden buffer consisting of several hundred bytes.
Because of the suze of the buffer, these emulations can be as Because of the size of the buffer, these emulations can be as
reliable as a 16550A in their ability to handle high speed data. reliable as a 16550A in their ability to handle high speed data.
However, most operating systems will still report that However, most operating systems will still report that
the UART is only a 8250A or 16450, and may not make effective use the UART is only a 8250A or 16450, and may not make effective use
@ -638,7 +638,7 @@ Sierra modem with an internal
functionality. COMTEST appears to turn a blind eye to the functionality. COMTEST appears to turn a blind eye to the
differences within the National product line and reports no errors differences within the National product line and reports no errors
on the National parts (except for the original 16550) even when on the National parts (except for the original 16550) even when
there are official erattas that describe bugs in the A, B and C there are official erratas that describe bugs in the A, B and C
revisions of the parts, so this bias in COMTEST must be taken into revisions of the parts, so this bias in COMTEST must be taken into
account. account.
@ -948,7 +948,7 @@ Port Allowed
to DCD. to DCD.
Bit 3 OUT 2 Bit 3 OUT 2
An auxillary output that the host An auxiliary output that the host
processor may set high or low. processor may set high or low.
In the IBM PC serial adapter (and most In the IBM PC serial adapter (and most
clones), OUT 2 is used to tri-state clones), OUT 2 is used to tri-state
@ -956,7 +956,7 @@ Port Allowed
8250/16450/16550 UART. 8250/16450/16550 UART.
Bit 2 OUT 1 Bit 2 OUT 1
An auxillary output that the host An auxiliary output that the host
processor may set high or low. processor may set high or low.
This output is not used on the IBM PC This output is not used on the IBM PC
serial adapter. serial adapter.