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SY-019H / SY-019I
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Actual Entry (non editable)
SY-019H / SY-019I (c) 199? Soyo Highly reliable early-1990s Baby AT motherboards manufactured by SOYO Computer. Built upon a full 32-bit internal and external routing infrastructure, the board is powered by the specialized ETEQ ETEQ386 core logic chipset (combining the ET82C491 and ET82C493 controllers). It natively hosts an Intel or AMD 80386DX microprocessor clocked at 33 MHz or 40 MHz, alongside a standard socket for an 80387DX or Cyrix FasMath co-processor. Due to its robust voltage trace design, it became highly sought after for hosting 486 upgrade drop-in CPUs such as the Cyrix Cx486DLC. Its hardware real estate features a clean legacy peripheral workspace consisting of six 16-bit ISA slots and two 8-bit ISA slots, requiring discrete multi-I/O controller cards. Memory management routes through eight 30-pin SIMM banks handling up to 32 MB of Fast Page Mode (FPM) DRAM, backed by an expandable external secondary L2 write-back static cache matrix holding up to 256 KB of SRAM DIP modules. - TRIVIA - The Cyrix DLC Performance Lifeline: In the early 1990s, upgrading a full system to a true 486 was an expensive enterprise. The SY-019H/I became a favorite for budget-conscious power users because its ETEQ memory controller perfectly synchronized with the internal L1 cache of the hybrid Cyrix Cx486DLC chip—a CPU that had a 486 instruction set but pinned directly into a standard 386DX socket, extending the operational life of the motherboard by several years. The BIOS Tuning Secret: Modern retro-computing enthusiasts (on forums like VOGONS) discovered that the native AMI BIOS firmware bundled with the SOYO SY-019 features highly optimized, aggressive hidden registers for tweaking ISA bus speeds and memory wait states. The microcode is so efficient that it has been extracted and flashed onto other generic or poorly optimized SiS-based 386 motherboards to boost their calculation throughput by up to 30%. - SOURCES - Machine's Bios.
Your Changes (editable)
SY-019H / SY-019I (c) 199? Soyo Highly reliable early-1990s Baby AT motherboards manufactured by SOYO Computer. Built upon a full 32-bit internal and external routing infrastructure, the board is powered by the specialized ETEQ ETEQ386 core logic chipset (combining the ET82C491 and ET82C493 controllers). It natively hosts an Intel or AMD 80386DX microprocessor clocked at 33 MHz or 40 MHz, alongside a standard socket for an 80387DX or Cyrix FasMath co-processor. Due to its robust voltage trace design, it became highly sought after for hosting 486 upgrade drop-in CPUs such as the Cyrix Cx486DLC. Its hardware real estate features a clean legacy peripheral workspace consisting of six 16-bit ISA slots and two 8-bit ISA slots, requiring discrete multi-I/O controller cards. Memory management routes through eight 30-pin SIMM banks handling up to 32 MB of Fast Page Mode (FPM) DRAM, backed by an expandable external secondary L2 write-back static cache matrix holding up to 256 KB of SRAM DIP modules. - TRIVIA - The Cyrix DLC Performance Lifeline: In the early 1990s, upgrading a full system to a true 486 was an expensive enterprise. The SY-019H/I became a favorite for budget-conscious power users because its ETEQ memory controller perfectly synchronized with the internal L1 cache of the hybrid Cyrix Cx486DLC chip—a CPU that had a 486 instruction set but pinned directly into a standard 386DX socket, extending the operational life of the motherboard by several years. The BIOS Tuning Secret: Modern retro-computing enthusiasts (on forums like VOGONS) discovered that the native AMI BIOS firmware bundled with the SOYO SY-019 features highly optimized, aggressive hidden registers for tweaking ISA bus speeds and memory wait states. The microcode is so efficient that it has been extracted and flashed onto other generic or poorly optimized SiS-based 386 motherboards to boost their calculation throughput by up to 30%. - SOURCES - Machine's Bios.
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