1AS(1) General Commands Manual AS(1)
2
6 as - assembler
7
9 as [ - ] [ -o objfile ] file ...
10
12 As assembles the concatenation of the named files. If the optional
13 first argument - is used, all undefined symbols in the assembly are
14 treated as global.
15 The output of the assembly is left on the file objfile; if that is
17 omitted, a.out is used. It is executable if no errors occurred during
18 the assembly, and if there were no unresolved external references.
19
21 /lib/as2 pass 2 of the assembler
22 /tmp/atm[1-3]? temporary
23 a.out object
24
26 ld(1), nm(1), adb(1), a.out(5)
27 UNIX Assembler Manual by D. M. Ritchie
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30 When an input file cannot be read, its name followed by a question mark
31 is typed and assembly ceases. When syntactic or semantic errors occur,
32 a single-character diagnostic is typed out together with the line num‐
33 ber and the file name in which it occurred. Errors in pass 1 cause
34 cancellation of pass 2. The possible errors are:
35 ) Parentheses error
37 ] Parentheses error
38 < String not terminated properly
39 * Indirection used illegally
40 . Illegal assignment to `.'
41 a Error in address
42 b Branch instruction is odd or too remote
43 e Error in expression
44 f Error in local (`f' or `b') type symbol
45 g Garbage (unknown) character
46 i End of file inside an if
47 m Multiply defined symbol as label
48 o Word quantity assembled at odd address
49 p `.' different in pass 1 and 2
50 r Relocation error
51 u Undefined symbol
52 x Syntax error
53
55 Syntax errors can cause incorrect line numbers in following diagnos‐
56 tics.
57 PDP11 AS(1)