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- > > IIRC Motorola claims 6 operations per instruction cycle for the 56k, but
- > > then one instruction cycle is two clock cycles, which may well be the case
- > > with the TI chip as well.
- >
- > The 56000/1 Reference claims 7 operations/instruction cycle. This does of course
- > depend on how you define an 'operation'. The 56k's main advantage is multiple
- > parallel data busses.
- >
- > Most of the TI DSP / GPU processors I have worked with take either 4 or 2
- > clock cycles per instruction cycle - some are even binary compatible with
- > the DSP56000. It is of course possible these particular chips are very recent
-
- This sounds like the one if they are binary compatible. Would make life much more
- plesant.
-
- > The most common TI DSP is almost identical to the 56k, but each instruction takes
- > exactly twice as long to execute. The clock rate is around 50-80Mhz. I can't
- > remember the name, but it's something like TMS34010/20.
-
- :-\ Twice as long? Ehh.. But TI have got _many_ different DSP's and the most
- used are probably the TMS320C40 and C50. I don't know much about them, but they
- are supposed to be fast.
-
- C40:
-
- 275MOPS and 320MB/sec
- 11 operations per cycle
- 40/32-bit singel cycle floating-point/integer multiplier
- Hardware divide and inverse square root support
- Support for linear, circular, and bit-reversed adressing
- Two identical external data and adress buses
- 512-byte instruction cache
- etc..
-
- I have the access the the user guide if you want some more figures. :-)
-
- > > But how would they connect it?
- > > It seems that for many things the bus is the bottleneck even with the
- > > relatively slow DSP we have now.
- >
- > I'd be happy just to see Falcon developers making use of the DSP we already
- > have before adding even more. Relatively slow it may be, but it's still much
- > more capable than Falcon users seem to think.
-
- That's why I wanted a c-compiler for it.... :-)
-
- > It would be great to see people shake this concept of a fancy soundchip and
- > start using it to remove bottlenecks. There are a few out there using it for
- > a variety of purposes, but most still treat it like an add-on sample player.
-
- Yepp, I know but it looks like the 56001 is an expert on soundprocessing.
-
- > > with a Afterburner (the best thing would be to stick this card directly on the
- > > Afterburner giving a fast 32-bit bus!!) it will go into warp speed.
- >
- > > Is there such a bus to use on the AB040?
- >
- > Yes, there appears to be a 32-bit local data bus in addition to the standard
- > expansion slot.
-
- Hey, that's cool. Are you sure? I wonder if there is any info on it. It wouldn't
- be to hard to make an adapter to make it possible to use cheap PC-graphics cards
- for it. Maybe something for your chief hardware designer now then the Nemesis is
- ready?? <:-)))
-
- //Magnus Kollberg
-
-