To: unclewest who wrote (21249 ) 6/1/1999 6:19:00 AM From: Dave B Read Replies (1) | Respond to of 93625
unclewest, No, IBM wouldn't have to pay to use devices that someone else builds. Dell, for example, doesn't have to pay Rambus royalties to put together a PC from the RIMMs and chipsets that other companies designed and built. The IBM PC group wouldn't have to pay a royalty either. It was the IBM Microelectronics group that licensed the interface, I'm pretty sure. Here's the only thing I could find (from 1996):IBM adds Rambus Cell to ASIC library. (Rambus Inc's Rambus ASIC Cell licensed by IBM for IBM's SystemCore library) (Company Business and Marketing) Electronic News (1991), Feb 12, 1996 v42 n2103 p50(1) Author MacLellan, Andrew Summary IBM announces it has licensed ASIC technology from Rambus Inc that will enable IBM to add a high bandwidth interface to its SystemCore library. The Rambus ASIC Cell (RAC) is able to transfer up to 533 megabytes of information per second between memory and logic ICs or chip-to-chip. The rate is eight times more rapid than conventional high bandwidth technology. IBM is just one of many ASIC vendors to license the RAC technology, and the firm plans to integrate the RAC technology into its ASIC library as a part of a program that already integrates the IBM PowerPC core and other functions, including DAC, PCI and compression phase-locked loops. IBM wants to have the biggest ASIC program in the world, and it believes Rambus' technology will help it reach its goals. The RAC will be available for customer design by the middle of 1996. I don't know what SystemCore is, but maybe they decided that they don't want to pay royalties on whatever it is, and that DDR DRAM works just fine for them.