Re: TI-H: Power PC
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Re: TI-H: Power PC
The PPC 403 to 750 was made to do the same things a CISC did, using less
clock cycles. Yes, there are divide, multiply, add subtract... I think
the manual is only a 10MB or so file download...
>Just like I can show you a programming example in which CISC is just as fast
>as RISC. If you're going to bring it up, mention details. The essence of
>CISC is to make an instruction for everything. Even though a multiply is just
>a loop of additions, it'll still have an instruction for it. This goes for a
>lot of other ops. However, by doing this, you add another layer of
>complexity, since each instruction is of a different length.
> In RISC, you have fewer instructions, and your compiler will break down
>the complex code into simpler instructions, which are each the same length.
>As a result, each one is processed the same way, and you can even do more than
>one at a time more easily, because they all come back at just about the same
>time, and you piece the results back together. CISC is highly dependent on
>instruction order, and it's a miracle that the dual-pipe Pentium and up CPUs
>were even created.
> By the way, the multiply example was only used for simplicity. I'm pretty
>sure that most modern RISC processors HAVE a dedicated multiply instruction...
>
>CK
>
>Grant Stockly wrote:
>
>> Just by hearing the name PowerPC, you know its better than any Intel or
>> compatible. The PPC uses RISC technology (~4 years old) and the intel
>> processors use CISC technology (~22 years old). For one thing, the C
>> stands for complicated and the R stands for reduced. If you want, I can
>> show you a programming example for each in machine code and you can see
>> which can do the same process faster.
References: