Texas Instruments 990 Operation Manual page 250

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945255-9701
Directive
Page Title
Program Identifier
External Definition
External Reference
Absolute Origin
Relocatable Origin
Dummy Origin
Block Starting
with Symbol
Block Ending
with Symbol
Initialize Word
Initialize Text
Define Extended
Operation
Define Assembly-
Time Constant
Word Boundary
No Source List
List Source
Page Eject
Initialize Byte
Program End
__. term - a term
I.
3.
4.
c:
oJ.
Table D-3. ,Assembler Directives
Force Word
Syntax Boundary
Note
[<label>] TITL <string> NA
[<label>] IDT <string> NA
[<label>] DEF <SymboC>[,<SymboC>] ... NA
[<label>] REF <Symboc>[,<Symbol>] ... NA
[<labeC>] AORG <wd expr> No
[<label>] RORG «expr>] No 1, 3
[<IabeC>J OORG <wd expr>
No
[<label>] BSS <wd expr> No
[<label>] BES <wd expr>
No
[<labeC>] DATA <expr>[,<expr>] ... Yes
[<label>] TEXT [-] <string> No 2
[<label>] DXOP <symboC>,<term> NA
<label> EQU <expr>
NA 3
[<label>] EVEN
Yes
[<;iabel>] UNL
NA
[<label>] LIST
NA
[<labeC>] PAGE
NA
[<label>] BYTE <wd expr> [,<wd expr>] ...
No
[<labeC>] END [<Symbol>]
NA 4
NOTES
The expression must be relocatable.
The minus sign causes the assembler to negate the rightmost character.
Symbols in expressions must have been previously def1l\ed.
Symbol must have been previously defmed.
Keywords are XREF, OBj, SYMT, NOLlST, and TEXT.
• operation - mnemonic operation code, macro name, or previously defined operation or
extended operation
OS ASSEMBLER PSEUDO-INSTRUCTIONS .
Model· 990 Assembly Language pseudo-instructions are listed in table D-4. The pseudo-
instructions, which have no operand fields, have optional comment fields. The symbols and
conventions are the same as in the assembler directive syntax.
0-8
Digital Systems Division .