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BBS in a Box -Volume V (BBS in a Box) (April 1992).iso
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t.sys 6.x Probs
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1988-09-15
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Comment on GEnie:
John, there are some known problems in attempting to run System 6.0 on 512Ke's
and earlier Macs because of the size of the PRAM area. With the introduction
of the Mac Plus Apple enlarged this area over what's allocated in the previous
Macs but up until System 6.0 didn't use any of the additional area. Now they
are which is causing problems when System 6.0 is installed on 512Ke or earlier
machines even if the memory's been increased via 3rd party upgrade boards. The
known problem and supected areas when using System 6.0 on 512Ke or earlier
Macs are:
Use of the Sound Manager to select an alternate sound to replace the "beep".
The ability to store these changes in the PRAM area since it's smaller on the
512e and earlier Macs.
Alternate connection methods for AppleTalk such as asynchronous AppleTalk.
A very definite suspicion that the new serial drivers are affected, too.
These are the areas most mentioned but there could be more that folks haven't
stumbled across. Bottom line appears to be having increased memory equal to or
above that of a Mac Plus isn't the only factor coming into play. It goes a lot
"deeper" than that.
.I think I can safely guarantee that System v6.x will not be modified to
accomodate 512K Macs, even if they have had additional memory installed. Apple
seems pretty adamant on this point.
In particular, System v6.0 no longer has patches for the differences in the
serial port chips on 512K's and 512Ke's (the same chip that holds the PRAM
memory). It *may* be possible for a programmer to install some special code
that would overcome this problem, but I haven't checked this out thoroughly
enough to say more than that.
Since you have the additional memory, I sympathize with you. System v6.0 has a
much-improved version of MultiFinder. However, for most people, that is it's
only significant advantage. Ergo, I would say that unless you have had
problems with the older incarnations of MultiFinder, you will be best off
sticking with System v4.2 or v4.3. They are reasonably free of bugs, contain
new code that should handle the vast majority of programs available, and it
supports your current hardware.
If you're a programmer-type, drop me a GEnie Mail and I'll outline my thoughts
for a serial port fix.
Good luck!
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