Control Data 3100 Reference Manual page 160

Example:
VFD 012/-737,A21/A-X+B,H24/+A3 ,A 15/NAME
+2,H18/BQ.
A. X, and Bare nonrelocatable symbols. Four words
are generated, with the data placed as follows:
,-2_3 _ _ _ _ -.-_1_1 _ _ _ _ 0:. . . . . . . , 23 1 4 8
I
7
°
4
°
I
[A
I I -
X
+
Bl
I
2
°
j
2
-737 Arithmetic
Expression
+
Word Word 2
23 20
14
°
23 17 11
A
5
°
I
[Name +2]
I
12 2
j
5
°
I
°
3 Space Word Address
B
Q
Space
Word 3 Word 4
Additional Pseudo Instructions
°
0\
Additional lines of coding may be generated by the following pseudo instructions:
IFZ m,n -
n succeeding lines of coding are assembled if m is zero. The expression n must
result in a positive numerical integer, and m may be a symbol, an address arithmetic
symbol, or a literal. If m is non-zero, n succeeding lines of coding will be bypassed by
the assembler.
IFN m,n -
n succeeding lines of coding will be assembled if m is non-zero; the expression
n must result in a positive numerical integer, and m may be a symbol, address arithmetic
symbol or literal. Ifm is zero, n succeeding lines of coding will be bypassed by the assembler.
The pseudo instructions, 1FT and IFN may be used within the range of a MACRO
definition only.
1FT m,p,n, -
n succeeding lines of coding will be generated if character string m equals char-
acter string p. The expression n must result in a positive numerical integer, and m and
p may be a formal parameter or a literal. If m
~
p, n succeeding lines of coding will be
bypassed.
IFF m,p,n -
n succeeding lines of coding will be generated if m
~
p. The expression n
must result in a positive integer, and m and p may be a formal parameter or a literal. If
m
=
p, n succeeding lines of coding will be bypassed.
ORGR m -
the value in the address field will be assembled as the beginning location for
subsequent instructions. The value may be in program, data area or common area mode.
The occurrence of a mode change pseudo operation, COMMON, DATA or PRG, ter-
minates ORGR and subsequent instructions are assembled in the new mode.
NO P -
No operation. An ENI y, 0 instruction is inserted.
TITLE -
the information beginning in the address field is printed at the head of each
page of the output listing which follows. The first page of listing may be titled by pre-
senting the TITLE card immediately following the IDENT card.
8-16