翻訳と辞書 Words near each other ・ integrated systems architecture ・ integrated systems laboratory ・ integration ・ integration testing ・ integrity constraint ・ intel ・ intel 4004 ・ intel 4040 ・ intel 486 ・ intel 486dx ・ intel 486sx ・ intel 487sx ・ intel 8008 ・ intel 80186 ・ intel 80188 ・ intel 80286 ・ intel 80386 ・ intel 80386dx ・ intel 80386sx ・ intel 8048 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Intel 486SX ： FOLDOC Intel 486SX An Intel 486DX microprocessor with its floating-point unit disconnected. All 486SX chips were fabricated with FPUs. If testing showed that the CPU was OK but the FPU was defective, the FPU's power and bus connections were destroyed with a laser and the chip was sold cheaper as an SX, if the FPU worked it was sold as a DX. [Was this true of all 486SX chips?] Some systems, e.g. Aopen 486SX, allowed a DX to be plugged into an expansion socket. A board jumper would disable the SX which was hard to remove because it was surface mounted. Some SX chips only had a 16-bit wide external data bus. The DX has a pin to select the data bus width (16 or 32). On the smaller SX, that line is hard-wired to 16 inside the package. This is similar to the 286 SX, which was a 16-bit processor with an 8-bit external data bus. The Jargon File claimed that the SX was deliberately disabled crippleware. The German computer magazine, "c't", made this same theory th スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.