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ITL Plc has introduced four mid-range models of its Momentum 10000 range of 32-bit fault tolerant minicomputers. The new machines still use the Momentum architecture and the Modus operating system and although ITL will neither confirm nor deny it probably the same processor as the rest of the Momentum series – a 32-bit CPU built of AMD 2901 bit-slice microprocessors. The models include the 64, 264, 66 and 266. Models 64 and 66 are both three cabinet systems each having a single 64 or 66 processor and are coupled to 256Kb Momentum Fast Recovery Modules which allows the retention of memory content during failure of the mains power. The Momentum architecture is based on a multiple processor triple bus architecture and in Models 264 and 266 these buses are all duplicated. The 64 and 264 support up to 100 terminals, up to 4Mb main memory, 5Gb disk capacity and provides a throughput 12 TPS with a transaction response time of around one second. The 66 and 266 can support 200 users, 12Mb main memory, 4Kb CPu instruction cache, 5Gb disc capacity and 18 TPS. The entry price for the 64 is UKP95,000 and the cost rises to UKP300,000 for the Model 266. ITL will not comment on the Sequoia agreement (CI No 787) because details concerning how the Unix and Pick products will fit into its own proprietary Modus operating system range are not yet set.

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