Re: SCSI HD IIGS: Question - How to boot both 8-bit and 16-bit software?

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

In article <39agon$2ae@nyx10.cs.du.edu>,
Chris Deschu <cdeschu@nyx10.cs.du.edu> wrote:
> In article <CyoJs4.M0J@actrix.gen.nz>,
> David Empson <dempson@atlantis.actrix.gen.nz> wrote:
> >
> >How are you restarting each time?  I haven't used this method for a
> >while, but you would definitely have problems if you used the
> >following sequence:
> >
> >1. Initial boot into ProDOS-8
> >2. Launch the GSOS file to start up GS/OS
> >3. Launch a ProDOS-8 program from GS/OS
> >4. Launch the GSOS file to get back to GS/OS
> 
> 	Well, I do this every day, consistently, and haven't had
> any problems I could attribute to it. The only time I would
> do a reboot just for p8 is with proterm, because it can't
> handle the interrupts and looses characters.

How many times in a row did you go through this sequence?

The problem is that every time you launch GS/OS again without
rebooting, many of the INITs, etc. will be loaded into memory a second
time.  Some types of programs will be thrown out, but some will hang
around and may end up with multiple invocations in memory.  In
particular, anything which patches itself into the system is likely to
have problems.

Apart from any other considerations, memory fragmentation will
probably get worse each time you enter GS/OS in this fashion.

Rebooting (via Ctrl-Apple-Reset) should clean things up again.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand