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M203
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M203 (c) 199? Olivetti Prodest. The Olivetti Prodest M203 is a specialized 80286-based motherboard designed for the European home-office market. Unlike the "Baby AT" clones that focused on generic expandability, the M203 is built for a compact, integrated chassis, often incorporating proprietary connectors for the power supply and specific expansion buses. It is typically powered by a Siemens or Intel 80286 processor, clocked at 12 MHz. The chipset logic is custom-tailored to handle the proprietary Olivetti BIOS and peripheral interfaces, emphasizing system stability over raw overclocking potential. It supports up to 1-4 MB of RAM, typically utilizing a mix of soldered DRAM chips and proprietary memory expansion modules. - TRIVIA - Proprietary Power: The M203 is famous (or infamous) among retro-collectors for its proprietary power supply connector. Unlike standard AT power supplies (with the two P8/P9 connectors), Olivetti used a custom pinout. Finding a working original power supply is often the hardest part of reviving an olim203 system today. The "Prodest" Philosophy: The Prodest line was Olivetti's ambitious attempt to bridge the gap between their sophisticated (and expensive) professional systems and the cheap, low-quality "clones" saturating the market. The M203 represents a "quality middle-ground"—more expensive to produce than a PC-Chips M205, but significantly more reliable for long-term office use. - SOURCES - CM's Bios.
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M203 (c) 199? Olivetti Prodest. The Olivetti Prodest M203 is a specialized 80286-based motherboard designed for the European home-office market. Unlike the "Baby AT" clones that focused on generic expandability, the M203 is built for a compact, integrated chassis, often incorporating proprietary connectors for the power supply and specific expansion buses. It is typically powered by a Siemens or Intel 80286 processor, clocked at 12 MHz. The chipset logic is custom-tailored to handle the proprietary Olivetti BIOS and peripheral interfaces, emphasizing system stability over raw overclocking potential. It supports up to 1-4 MB of RAM, typically utilizing a mix of soldered DRAM chips and proprietary memory expansion modules. - TRIVIA - Proprietary Power: The M203 is famous (or infamous) among retro-collectors for its proprietary power supply connector. Unlike standard AT power supplies (with the two P8/P9 connectors), Olivetti used a custom pinout. Finding a working original power supply is often the hardest part of reviving an olim203 system today. The "Prodest" Philosophy: The Prodest line was Olivetti's ambitious attempt to bridge the gap between their sophisticated (and expensive) professional systems and the cheap, low-quality "clones" saturating the market. The M203 represents a "quality middle-ground"—more expensive to produce than a PC-Chips M205, but significantly more reliable for long-term office use. - SOURCES - CM's Bios.
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