Stereo System User Manual

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.