[comp.sys.amiga] good news for Insider owners wrt RAD:

pds@quintus (Peter Schachte) (11/08/88)

Earlier, I asked about patches to 1.3 kickstart so that RAD: would be
recoverable in an amiga equipt with an Insider board (with $c00000
memory).  

The good news is that you don't seem to need one.  RAD:  recovers fine
for me with out-of-the-box 1.3 KS (patched with the latest noCLICKstart
[silence is indeed golden - thanks whoever is behind this]).  I can't
vouch for other $c000000 memory, but it's worth a try!
-Peter Schachte				"Clean water?  I'm for clean water."
pds@quintus.uucp				-George Bush
..!sun!quintus!pds

mp1u+@andrew.cmu.edu (Michael Portuesi) (11/09/88)

pds@quintus (Peter Schachte) writes:
> The good news is that you don't seem to need one.  RAD:  recovers fine
> for me with out-of-the-box 1.3 KS (patched with the latest noCLICKstart
> [silence is indeed golden - thanks whoever is behind this]).  I can't
> vouch for other $c000000 memory, but it's worth a try!

I have a Squeeze-RAM board in my 1000, which gives me 1 MB RAM at
$C00000.  I'm currently running a 512K RAD: out of it which gives me
no problems at all.  Reboots are really dramatic -- it's so fast,
it's actually fun to reboot the machine now.

Anyway, according to an old AmigaLine I have lying around, the
problem with $C00000 memory seems to occur when Exec performs a cold
boot.  It wipes clean CHIP and $C00000 memory.  During a warm boot,
the system just does some cleanup and starts over.

The system can be fooled into a cold boot in the following ways:

1) If someone tries to post a recoverable alert.  I belive SetPatch
fixes this problem.

2) If you have more than 512K of chip memory.

3) If something writes to memory, corrupting an area Exec keeps a
checksum for.

4) If someone patches a library routine without using SetFunction().

As you can see, these conditions are pretty rare -- I don't think
there's that much to worry about if you have RAD: in $C00000.

Michael Portuesi / Information Technology Center / Carnegie Mellon University
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