Advertisement
OTHER SYSTEM FUNCTIONS
27. 1
Register Functions
The
.ADBX
function adds the contents
Or
the B
registe~
to
th~
contents of the.X register.
The addition is performed
as
if
B
we~e
an unsigned
binar~
number.
ENTRY PARAMETERS:
EXIT CONDITIONS:
None.
A
is unchanged.
B
is unchanged.
X has been incremented by the contents of
B . .
CC has been set as in a
normal
unsigned
addition.
27. 1. 5 Add A to X -- . ADAX
The
. ADAX
function adds the contents of the A register
to the contents of the X register.
The addition is performed
as if
A
we~e
an unsigned binary number.
ENTRY PARAMETERS:
EXIT CONDITIONS:
None.
A is
unchanged.
B
is
unc hanged.
X has
bee~
incremented
b~
the
co~tents
or
A.
CC has been
s~t
as in
a
normal
unsigned
addition.
27.1.6 Add B,A to X -- .ADBAX
The
.ADBAX
function
adds the contents of the register
pair B,A to the contents
Or
the X
registe~.
ENTRY PARAMETERS:
EXIT CONDITIONS:
None.
A
is unchanged.
B
is unchanged.
X has been incremented by the contents of
B, A.
CC
has
been set as in
a
normal unsigned
addition.
27.1.7 Add X to
B~A
-- .ADXBA
The .ADXBA function adds the contents
Or
the X register
to the contents
Or
the register pair B,A.
ENTRY PARAMETERS:
None.
EXIT CONDITIONS:
A has been incremented
by
XL.
B has been incremented
b~
XH and C.
Page
27-03
Advertisement
