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Individual Instruction Descriptions
4-145
Assembly Language Instructions
4.14.51 OR Bitwise Logical OR
Syntax
[label] name dest, src [, src1] [, mod]
Clock,
clk
Word,
w
With RPT,
clk
Class
OR A
n
, {
adrs
} Table 4–46 Table 4–46 1b
OR A
n
[~], A
n
[~],
imm16
[,
next A
] 2 2 N/R 2b
OR A
n
[~], A
n
~, A
n
[,
next A
] 1 1 n
R
+3 3
OR TF
n
, {
flagadrs
} 1 1 N/R 8a
OR TF
n
, {
cc
} [, R
x
] 1 1 n
R
+3 8b
Execution [premodify AP if
mod
specified]
dest
⇐
dest
OR
src1
(for two operands)
dest
⇐
src
OR
src1
(for three operands)
PC ⇐ PC +
w
Flags Affected
dest
is A
n
: OF, SF, ZF, CF are set accordingly
dest
is TF
n
: TF
n
bits in STAT register are set accordingly
src
is {
adrs
}: TAG bit is set accordingly
src
is {
flagadrs
}: TAG bit is set accordingly
Opcode
Instructions 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OR A
n
, {
adrs
}
0 1 0 0 0 0 0 A
n adrs
x
dma16
(for direct) or
offset16
(long relative) [see section 4.13]
OR A
n
[~], A
n
[~],
imm16
[,
next A
] 1 1 1 0 0
next A
A
n
1 0 0 0 0 1 A~ ~A
OR A
n
[~], A
n
~, A
n
[,
next A
] 1 1 1 0 0
next A
A
n
0 1 0 0 1 0 A~ ~A
OR TF
n
, {
flagadrs
} 1 0 0 1 1
fig
Not 0 1 0
flagadrs
OR TF
n
, {
cc
} [, R
x
] 1 0 0 1 0
fig
Not
cc
R
x
0 1
Description Bitwise OR of
src
and
dest
. Result is stored in
dest
. If three operands are
specified then logical OR
src
and
src1
, store result in
dest
. Premodification of
accumulator pointers are allowed with some operand types.
Syntax Description
OR A
n
, {
adrs
} OR RAM word to A
n
OR A
n
[~], A
n
[~],
imm16
[,
next A
] OR immediate word to A
n
[~], store result in A
n
[~]
OR A
n
[~], A
n
~, A
n
[,
next A
] OR A
n
word to A
n
~ word, store result in A
n
[~]
OR TF
n
, {
flagadrs
} OR TF
n
with memory tag, store result in TF
n
bit in STAT
OR TF
n
, {
cc
} [, R
x
] OR test condition with TF
n
bit in STAT register
.
R
x
must be provided if
cc
is
one of {RZP, RNZP, RLZP, RNLZP} to check if the selected R
x
is zero or
negative. R
x
should not be provided for other conditionals.