Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!execu!sequoia!rpp386!woody
From: woody@rpp386.cactus.org (Woodrow Baker)
Newsgroups: comp.lang.postscript
Subject: Re: Do I need memory upgrade?
Summary: memory
Message-ID: <17567@rpp386.cactus.org>
Date: 5 Jan 90 21:20:56 GMT
References: <136800005@uxa.cso.uiuc.edu>
Organization: River Parishes Programming, Plano, TX
Lines: 36

In article <136800005@uxa.cso.uiuc.edu>, gsg0384@uxa.cso.uiuc.edu writes:
> 
> a Apollo DN4500 unix machine through serial connector.
> It does not allow postscrip graphics printing when the file is bigger than 
> 1 Meg for a page.
do you mean the image is > 1 meg, or the Postscript code that produces it?
1 meg is HUGE for a postscript program.  Sounds like some one needs to look
at the code if that is the case..
> 
> So,
> do we need memory upgrade?
Remember, the 2 megs of memory are split between the page buffer (about 1 meg)
the font chache and program space.  Typically, you will have about 400K-600K
for program (VM) space.  IF your programs are very large, you need more memory.
I have a hard time believing that a PS program could be 1 meg in size, unless
it had LOTS of bitmaps in it.  One thing that you could do in that case, would
be to image the bitmaps first, then send the remaining portions of the program
such that you only have small chunks.  That would require some fairly careful
work. I have seen some large 100-300K programs generated from Auto Cad.  The
SCOOP demo is one of them.  If you truely have 4 mbyte pages, then I'd guess
you'd need 6 megs total memory.  I can assure you that the printer at 2 meg
is quite useful.  People mostly need memory to download fonts.  It might
be quite possible to get large page descriptions if you are downloading
many fonts on the fly with it.  Perhaps it would help to download the
fonts to the printer persistantly
 

> How can we buy the memory upgrade kit?  The manual says that I can add
> 2 meg, 4 meg, 6meg, ... upto 12 meg.  Suppose I have a graphics file 
> which has 4 meg in size per page.   How much do I need?
> 
> Is the laserwriter NTX not really usable with its basic configuration?
Yes.
> 
> 
> 	Hugh