Customising autocad for piping systems

Τίτλος

Customising autocad for piping systems

Θέμα

AutoCAD (Computer software)

Piping

Δημιουργός

Papaicovou, Constantinos

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1991

Συνεισφέρων

Dimitriou, Peris

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

MED 0124

Σύνοψη

Basic Settings
Before anyone run or even write an Autolisp program like the one in this project he has to make some settings in order to be able to run the program. First one must set lispheap and lispstack.
These settings are readable.by Autocad and they are used to reserve enough memory for Autolisp.
SET LISPHEAP= allocates memory for Autolisp functions and variables (nodes). If you use many Autolisp programs or if you use large Autolisp programs like the particular case you need to increase this value. More heap space increases Autolisp speed by reducing the swapping (paging) of functions. If you have extended memory, using extended Autolisp gives Unlimited Heap Space. For the particular case a value of lispheap=40000 is enough.
SET LISPSTACK= defines Autolisp's temporary working data area during execution. Complex Autolisp programs using many arguments, recursive or nested routines, or large amounts of data may require more stack space. For the particular program a value of lispstack=5000 is enough.
Another setting that must be done is to set the acadfreeram= 24. This setting allows you to set as much free RAM area as available for Autocad. For the particular case a value of 24 for a 640K machine is adequate.
Since .LSP files are not really program files we use another set command the acad=\lisp which tells the computer where to look to find the .LSP programs.
Construct a .BAT file containing the following lines to take care of the above settings.
cd \acad
set lispheap=40000
set lispstack=5000
set acadfreeram=24
set acad=\lisp
acad
The (vmon) function.
(vmon) is a virtual memory pager. For all practical purposes, it eliminates all insufficient node space errors. When run out of memory (vmon) will first page you out to the extended or expanded memory and then if necessary to disk. Simply include (vmon) in the ACAD.LSP file.