@item -r800
Produce code for the R800 processor. The assembler does not support
undocumented instructions for the R800.
-In line with common practice, @code{@value{AS}} uses Z80 instriction names
+In line with common practice, @code{@value{AS}} uses Z80 instruction names
for the R800 processor, as far as they exist.
@end table
@cindex single quote, Z80
@cindex Z80 '
The single quote @samp{'} must be followed by a closing quote. If there
-is one character inbetween, it is a character constant, otherwise it is
+is one character in between, it is a character constant, otherwise it is
a string constant.
@node Z80-Regs
@cindex register names, Z80
The registers are referred to with the letters assigned to them by
-Zilog. In addition @command{@value{AS}} recognises @samp{ixl} and
+Zilog. In addition @command{@value{AS}} recognizes @samp{ixl} and
@samp{ixh} as the least and most significant octet in @samp{ix}, and
similarly @samp{iyl} and @samp{iyh} as parts of @samp{iy}.
@item ds @var{count}[, @var{value}]
@itemx defs @var{count}[, @var{value}]
@c Synonyms for @code{ds.b},
-@c which should have been described elsewhre
+@c which should have been described elsewhere
Fill @var{count} bytes in the object file with @var{value}, if
@var{value} is omitted it defaults to zero.
A synonym for @xref{Section}, no second argument should be given.
@ignore
-The following attributes will possibly be recognised in the future
+The following attributes will possibly be recognized in the future
@table @code
@item abs
The section is to be absolute. @code{@value{AS}} will issue an error
@node Z80 Opcodes
@section Opcodes
-In line with commmon practice Z80 mnonics are used for both the Z80 and
+In line with common practice, Z80 mnemonics are used for both the Z80 and
the R800.
In many instructions it is possible to use one of the half index