🚀 go-pugleaf

In article <C0Co0s.1C6@usenet.ucs.indiana.edu> ntaib@silver.ucs.indiana.edu (Iskandar Taib) writes:
>In article <1992Dec23.144535.11341@crd.ge.com> davidsen@crd.ge.com (bill davidsen) writes:
>
>>  The truth is that Mac applications are 32 bit, and DOS applications
>>are 16 bit. A comparison of UNIX 32 bit applications would be more
>>correct, if they were just comparing the processors.
>
>Well, if this is so, how do the apps run on Mac Pluses? And why is 
>32 bit adressing an option under System 7? 

*Most* Mac applications are "32-bit clean" which means that they will
run in 32-bit addressing mode.  Some older Mac applications are not
32-bit clean and will not run in 32-bit mode.  32-bit addressing is
necessary for using Macs with more than 8 MB of RAM.  For example, in
my PowerBook 160 I have 14 MB of RAM installed.  I use 6 MB as a RAM
disk and 8 MB for memory.  I turn off 32-bit addressing mode with this
configuration.  If I need to use more or less RAM as main memory or
RAM disk, I just use the Memory control panel and reconfigure the RAM
and the addressing mode.

The "32-bit dirty" applications typically used one of the address
bytes for other information which is now a "no-no" according to Apple.

32-bit clean applications will run on any Mac, including a Mac Plus.
32-bit dirty applications will only run on System with 32-bit adressing
mode turned off (the default.)  In this mode you can only use 8 MB of
RAM as main memory.
-- 
Chuck Fisher                                        (800) 359-7997 Work
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