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16 December 2007, 01:18
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#1 |
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RasterSoft Dev
Join Date: Feb 2005
Location: Manteno IL
Posts: 58
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64 bit signed multiply
Is the 64 bit muls.l d0, d1:d2 instruction limited to 68020+?
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16 December 2007, 09:47
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#2 |
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Registered User
Join Date: Jan 2002
Location: Germany
Posts: 7,009
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Yes.
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16 December 2007, 12:24
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#3 |
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Registered User
Join Date: Nov 2006
Location: Stockholm, Sweden
Posts: 237
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Also, it is emulated in software on 68060. The default software-implementation (which is located in the 060 accelerator's on-board ROM, or in 68060.library) is quite slow. Without Oxypatcher or some other utility which installs an optimized software-implementation, a 64bit mul runs roughly the same speed on 060/50 as it does on 020/14.
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