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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:17:22 ADT
Vinnie Moscaritolo (vinnie@vmeng.com)
Wed, 13 May 1998 22:02:34 -0800
Has anyone looked at the Altavec PPC cpu.
Briefly, it adds 162 new instructions which act on 32 new 128-bit registers. Unlike MMX, this
doesn't impact floating-point registers and the new instructions are executed in parallel with integer
and FP instructions. The registers can be loaded/stored with a single instruction, other instructions
act on up to 3 registers considered as 16 bytes, 8 16-bit words (or 1-5-5-5 pixels) or 4 32-bit words
(integer or floating point), all in a single clock cycle. There are also shuffling, masking and compare
instructions, and DSP-like add-multiply instructions.
The first product will be sampling late this year, be out in early '99, use the G4-type 1.8V, 0.18 um
copper-based process, and be drop-in pin compatible with the G3/750.
http://www.mot.com/SPS/PowerPC/AltiVec/
it sure looks like a great canidate for crypto processing
Vinnie Moscaritolo
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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:17:22 ADT