Re: [B2-devel] TESyncScrap (Thoughts on SheepShaver and Basilisk II)

[Frank T. <fra...@gm...>]

And I do agree that building in 64-bit mode is an absolute necessity for
on-going compatibility.

On Mon, Jun 18, 2012 at 11:59 AM, Frank Trampe <fra...@gm...>wrote:

>
>
> On Mon, Jun 18, 2012 at 11:54 AM, Robert Munafo <mr...@gm...> wrote:
>
>> On 6/18/12, Josh Juran <jj...@gm...> wrote:
>> > Then wouldn't it make more sense to always build as 32-bit?  It's not
>> > like SheepShaver will ever even remotely need more than 4 GB of
>> > address space.
>>
>> We need 64-bit to work in Lion (10.7) and Mountain Lion (10.8). Snow
>> Leopard (10.6) is the last version that has any 32-bit runtime or a
>> 32-bit kernel.
>>
>
> Not exactly. Certain kernel-related things must run in 64-bit mode, but
> there is still i386 support.
>
> {
> cambridge:~ admin$ uname -v
> Darwin Kernel Version 11.4.0: Mon Apr  9 19:32:15 PDT 2012;
> root:xnu-1699.26.8~1/RELEASE_X86_64
> cambridge:~ admin$ file /mach_kernel
> /mach_kernel: Mach-O universal binary with 2 architectures
> /mach_kernel (for architecture x86_64): Mach-O 64-bit executable x86_64
> /mach_kernel (for architecture i386): Mach-O executable i386
> }
>
>
>>
>> Apple is not Microsoft. They don't lift a finger for runtime binary
>> backward-compatibility.
>>
>> Certainly true.
>
>
>> > On Jun 17, 2012, at 11:41 PM, Robert Munafo wrote:
>> >> Apple does not provide 64-bit runtime libraries for any of Carbon,
>> >> such as is needed to convert PICT scrap data into another bitmap
>> >> format. In fact, all of QuickDraw is missing, and you can't even view
>> >> a PICT image on your Leopard (or later) Mac if you have it set to boot
>> >> with the 64-bit kernel (except by transferring the PICT data into an
>> >> emulator running an older Mac OS).
>>
>> --
>>  Robert Munafo  --  mrob.com
>>  Follow me at: gplus.to/mrob - fb.com/mrob27 - twitter.com/mrob_27 -
>> mrob27.wordpress.com - youtube.com/user/mrob143 - rilybot.blogspot.com
>>
>>
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>
>