Intel 80387SX (original) (raw)
O Intel 80387SX é o coprocessador matemático para o microprocessador Intel 80386SX. Era usado na realização de operações aritméticas de ponto flutuante diretamente em hardware. O coprocessador foi projetado para funcionar unicamente com a variante SX do i386, e não com o i386 padrão (posteriormente rebatizado de Intel 80386DX). Isto porque o barramento de dados do Intel 386SX era de 16 bits, enquanto o i386 original usava um barramento de 32 bits.
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|---|---|
| dbo:abstract | The Intel 80387SX (387SX or i387SX) is the math coprocessor, also called an FPU, for the Intel 80386SX microprocessor. Introduced in 1987, it was used to perform floating-point arithmetic operations directly in hardware. The coprocessor was designed only to work with the 386SX, rather than the standard 386DX. This was because the original 80387 could not communicate with the altered 16 bit data bus of the 386SX, which was modified from the original 386DX's 32 bit data bus. The 387SX uses a 68-pin PLCC socket, just like some variants of the 80286 and the less common 80186 CPU, and was made in speeds ranging from 16 MHz to 33 MHz, matching the clock speed range of the Intel manufactured 386SX. Some chips like the IIT 3C87SX could get up to 40 MHz, matching the clock speeds of the fastest 386SX CPUs. (en) O Intel 80387SX é o coprocessador matemático para o microprocessador Intel 80386SX. Era usado na realização de operações aritméticas de ponto flutuante diretamente em hardware. O coprocessador foi projetado para funcionar unicamente com a variante SX do i386, e não com o i386 padrão (posteriormente rebatizado de Intel 80386DX). Isto porque o barramento de dados do Intel 386SX era de 16 bits, enquanto o i386 original usava um barramento de 32 bits. (pt) |
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| rdfs:comment | O Intel 80387SX é o coprocessador matemático para o microprocessador Intel 80386SX. Era usado na realização de operações aritméticas de ponto flutuante diretamente em hardware. O coprocessador foi projetado para funcionar unicamente com a variante SX do i386, e não com o i386 padrão (posteriormente rebatizado de Intel 80386DX). Isto porque o barramento de dados do Intel 386SX era de 16 bits, enquanto o i386 original usava um barramento de 32 bits. (pt) The Intel 80387SX (387SX or i387SX) is the math coprocessor, also called an FPU, for the Intel 80386SX microprocessor. Introduced in 1987, it was used to perform floating-point arithmetic operations directly in hardware. The coprocessor was designed only to work with the 386SX, rather than the standard 386DX. This was because the original 80387 could not communicate with the altered 16 bit data bus of the 386SX, which was modified from the original 386DX's 32 bit data bus. The 387SX uses a 68-pin PLCC socket, just like some variants of the 80286 and the less common 80186 CPU, and was made in speeds ranging from 16 MHz to 33 MHz, matching the clock speed range of the Intel manufactured 386SX. Some chips like the IIT 3C87SX could get up to 40 MHz, matching the clock speeds of the fastest 386 (en) |
| rdfs:label | Intel 80387SX (en) Intel 80387SX (ja) Intel 80387SX (pt) |
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