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- From: aupperlm@cadvision.com (Milton Aupperle)
- Newsgroups: comp.emulators.mac.executor
- Subject: Re: system 7 & Fpu question
- Date: Fri, 24 May 1996 00:56:46 -0700
- Organization: ASC
- Lines: 23
- Message-ID: <aupperlm-2405960056470001@cadd100.cadvision.com>
- References: <01BB47D6.B9142820@loukyts126.mis.net> <m0uMHHV-000GQSC@gwar.ardi.com>
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- In article <m0uMHHV-000GQSC@gwar.ardi.com>, mat@ardi.com (Mat Hostetter) wrote:
-
-
- >Most Mac programs can't use the 680x0 FPU directly. For those that
- >can, emulating a 680x0 FPU would speed up their floating point
- >substantially.
- >
- Mat;
-
- Very true about this. I'm a Mac software developer for GIS type (very math
- intensive) software and accessing the FPU processor directly on the 68K
- series of macs will increase math performance by 2.5 to 4 times versus
- doing it through Apples' SANE calls. Most compilers allow you to do this,
- but it means having an additional version of the software for installation
- (we have 68K, 68K with FPU and PowerPC native version and you can do fat
- installs of either 68K or 68KWFPU with PowerPC too). It also means you
- have to extend your testing procedures too, cause although you can use
- those FPU emulators for both 68K and powerMacs, your testing the emulator,
- not the actual hardware, so there is a difference. So unless the software
- really needs that extra push for math intensive processing, it really is a
- bit of work to maintain.
-
- Milton.
-
-