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Section A:
System interface
************************************************************************
*
*
*
68 - Execute File
*
*
*
************************************************************************
On entry:
c
DE
On return:
A
44H
Address of FCB
error code
Possible logical errors:
- none -
Possible physical errors:
- none -
Differences to CP/M plus:
New function.
Differences to CP/M 2.2 resp. DiCOS:
Old DiCOS function, but DE
=
e
is no longer permitted.
The file denoted by the FCB is executed,
i.e.
keyboard input is
redi-
rected to the file. The file may contain several control characters. For
more detailed information, refer to the $DO.COM program.
If the file could not be executed,
either because it has not been found
or a physical error occurred,
a value of
~FFH
is returned in
A,
other-
wise
~.
When an error is detected during executing the file, input will
be
directed back to the keyboard again,
without any comment,
The same
will happen when the end of file is encountered,
If the file attribute bit £4' is set in the FCB, the file will be erased
after execution.
Under EOS, this function has been inplemented by a function module named
$DO.RSX.
If
a
program needs this service,
it can be linked
to
that
program by the $MOD utility.
EOS System manual
Daeumling
&
Zimmermann
Page 96
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