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- Path: news.micron.net!news
- From: Mustang@vrb.com (Aaron Smith)
- Newsgroups: comp.sys.amiga.misc
- Subject: PPC News: New superfast PPC chips.
- Date: Mon, 22 Jan 96 07:40:48
- Organization: Virtual Reality BBS
- Distribution: world
- Message-ID: <19960122.89F49D0.7541@vrb.com>
- NNTP-Posting-Host: vrb.com
-
-
- PPC News: New superfast PPC chips.
-
-
- This makes for some interesting reading. It came in my PowerPC news
- letter a few weeks ago. A 700Mhz chip would cirtainly make for a nice Amiga
- Rendering station. Play a good game of Deluxe Galaga PPC too.
-
-
- EXPONENTIAL AIMS TO TAKE POWERPC LEAD WITH NEW SUPERFAST CHIPS
- (December 4th 1995) Exponential Technology (PowerPC News 35) claims
- to have a revolutionary BiCMOS design process that will enable it to
- build PowerPC chips far faster than anything that IBM or Motorola
- have in the pipeline. The San Jose, California-based company, backed
- to the tune of $14m by Apple Computer and a collection of venture
- capitalists and private individuals, has negotiated the right to
- build its own PowerPC chip and says that its first product will tape
- out early next year with volume production following in early '97.
- Exponential says its PowerPC processors will offer twice the
- performance of CMOS for the same die size - possibly better. The
- first processor will be a functional equivalent of the 604, and
- though the company is being careful not to quote clock speeds, 'twice
- the performance' would imply a 300MHz-400MHz part. One source outside
- the company was talking about 700MHz parts last month. The large
- majority of the chip's logic circuit will be built from bipolar
- circuitry, with CMOS used for the onboard cache.
-
- Despite early rumours, the company says that it is not involved in
- building Intel-emulation hardware into its PowerPC clones.
-
- Traditionally, Bipolar silicon technology (as opposed to CMOS), has
- been the province of mainframe manufacturers - it can switch faster
- than CMOS, with a consequent improvement in processor clock speeds.
- Unfortunately bipolar has the reputation of being power-hungry,
- expensive to manufacture and bulky - CMOS components can be packed
- more closely on the processor. Consequently, even mainframe
- manufacturers have switched to CMOS-based processors as these have
- become faster.
-
- BiCMOS, as used by Intel in its initial Pentium designs, aims to
- bring the best of both worlds by introducing relatively small amounts
- of bipolar logic into the speed-critical areas of a CMOS processor. .
- However, according to Exponential, this approach has its draw-backs.
- Exponential claims that this conventional bipolar-on- CMOS approach
- results in a "relatively weak form of bipolar logic suitable only for
- building small-to-medium size logic functions and driving long
- wires".
-
- An alternative approach - placing small amounts of CMOS onto a
- predominantly bipolar chip has languished, mainly because of the
- previously mentioned size and energy draw-backs. This is a shame
- since a fast bipolar chip with onboard CMOS cache and support
- circuitry could be a winner.
-
- Exponential claims to have cracked the problem by discovering a way
- to design bipolar circuitry roughly equivalent to CMOS in size and
- energy consumption; in particular, it contends, since CMOS elements
- tend to grow in size anyway as clock speeds increase. The company has
- applied for 18 patents covering bipolar design methodologies, tools
- and also chip packaging. So far eight have been granted.
-
- There is no reason why the process shouldn't be applied to build
- BiCMOS variants of any microprocessor and if the company manages to
- deliver on its promises its technology will be attractive to a number
- of chip makers. However, Exponential CEO, Rick Shriner (formerly VP
- of core technology at Apple) says that there are no plans to license
- the technology out, and anyway "we've still got to prove it". No,
- instead Exponential intends to sell its products on the merchant
- market, in competition with IBM and Motorola at the high end.
-
- The company does not have its own chip fabrication plant, and is
- unwilling to divulge who will be making them, other than to say that
- the fab will be off-shore and the company isn't a US one. The smart
- money has got to be on Hitachi, which already has some ill-defined
- deal to build PowerPC processors and has also been banging on about
- its innovative BiCMOS fabrication technology. (PowerPC News 29/1335).
- Exponential sales direction Ivonne Valdes, Vice President of Sales
- denies, however that the company is unduly tied to its nameless
- manufacturing partner - Motorola and IBM, among others
- have similar manufacturing capabilities already, she suggests.
-
- Exactly how IBM and Motorola will react to the competition will be
- interesting to watch; as we went to press they had no comment. Rick
- Shriner says that relations are very good, but acknowledges that if
- he had the time he could "talk all year" about the negotiations
- required to get the rights to build the PowerPC variant. Neither IBM
- nor Motorola are being forthcoming about their thoughts on
- Exponential. The third partner in the PowerPC triumvirate, Apple, is
- obviously delighted at the prospect of competition. It was an
- original investor in the firm when it was founded in the summer of
- 1994, and came back for second bite of the cherry in a subsequent
- funding round. "They were looking for someone to put a flag in the
- ground" in terms of PowerPC performance.
-
- Exponential's financial footing is nearly as hazy as its initial
- product plans. $14m has been raised in two rounds of funding - the
- first round saw Apple accompanied by venture capitalists, Venrock
- Associates and a group of undisclosed private investors. The second
- round saw the two companies joined by Itochu, Innotech, Nazem and Co
- and Woodside fund. One investor is Jean Louis Gassee, ex of Apple and
- now head of Be Inc. But whether Gassee is involved on Be's behalf,
- privately or through the Innotech venture company, was not clear as
- we went to press. To date Exponential says it has spent half of its
- funds and expects to start a second round of funding after tape-out
- of its first product next spring.
-
- So can they do it? Exponential themselves point out that the
- technology is untested, however the names behind it are
- impressive.The company was founded by George Taylor and Jim Blomgren.
- Taylor was formerly director of experimental architecture at Sun
- Microsystems Laboratories, Blomgren also worked at Sun Labs on ECL
- SPARC processor design and at Chips and Technology on 386/486
- processors. Exponential's Chairman Gordon Campbell was also at Chips
- and Technology - as CEO.
- (c) PowerPC News - free by mailing add@power.globalnews.com
-
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