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comparison docs/ccguide/chain.refentry @ 594:c0da1728ed5b

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author roug
date Fri, 15 Nov 2002 21:49:51 +0000
parents fcb97f0ba24b
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593:0fda6c7fe48e 594:c0da1728ed5b
25 </para> 25 </para>
26 </refsect1> 26 </refsect1>
27 27
28 <refsect1><title>Description</title> 28 <refsect1><title>Description</title>
29 <para> 29 <para>
30 Placeholder 30 The action of F$CHAIN is described fully in the OS-9
31 documentation. Chain implements the service request as
32 described with one important exception: chain will NEVER return
33 to the caller. If there is an error, the process will abort
34 and return to its parent process. It might be wise, therefore,
35 for the programs to check the existence and access permissions
36 of the module before calling chain. Permissions may be checked
37 by using "modlink()" or "modload()" followed by an "munlink()".
38 </para>
39 <para>
40 "Modname" should point to the name of the desired module.
41 "Paramsize is the length of the parameter string (which should
42 normally be terminated with a "\n"), and "paramptr" points to
43 the parameter string. "Type" is the module type as found in
44 the module header (normally 1: program), and "lang" should
45 match the language nibble in the module header (C programs
46 have 1 for 6809 machine code here). "Datasize" may be zero, or
47 it may contain the number of 256 byte pages to give to the new
48 process as initial allocation of data memory.
31 </para> 49 </para>
32 </refsect1> 50 </refsect1>
33 </refentry> 51 </refentry>