Re: Is there a limit.......

[dempson@swell.actrix.gen.nz (David Empson)]

In article <2k6i6m$kh9@senator-bedfellow.MIT.EDU>
pbauer@ATHENA.MIT.EDU (Paul H Bauer) writes:
> 	Is there a limit to the number of inits and DAs that one can have 
> installed and active on a GS assuming 4 meg of RAM?

There are large limits imposed by various parts of the system
software:

- No more than 256 desk accessories in total (either type), because
there are only 256 user IDs available for desk accessories.

- No more than 240 NDAs (or thereabouts) - Desk Manager limitation.

- No more than 255 (I think) CDAs - Desk Manager limitation.

You are obviously limited by total memory, and inconvenience if your
menus get to full to find anything.

> If there is a limit is this caused by limited RAM or limited address
> space in certain areas of memory?

There shouldn't be any NDAs or CDAs which allocate "special" memory
(bank 0 or 1), so you shouldn't be having any other memory conflicts.

> I am trying to understand the cause of a GS/OS System Error =$0043.

The most likely cause: buggy software.

Next most likely cause: conflict between two or more INITs, NDAs,
CDAs, CDEVs, FEXTs, etc.  Does the problem go away if you shift-boot
("No Inits/DAs")?

Third most likely: random fault in your IIgs.  Do you have an
accelerator?


Someone else mentioned the Sound CDEV.  I have this installed, and I
don't get random GS/OS crashes unless I have a bug in a program I'm
working on which causes memory corruption.  :-)
-- 
David Empson                                                               
dempson@swell.actrix.gen.nz                                                
Snail mail: P.O. Box 27-103, Wellington, New Zealand