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AMD Lance Am7990 IEEE 802.3〔 090427 amd.com〕 Ethernet Media Access Controller (MAC) controller were introduced in 1985.〔 090426 amd.com〕 Its architecture is the basis for AMD’s PCnet Family of highly integrated single-chip Ethernet controllers. The one exception is the Am79C940 MAC. The Am7990 chip was fabricated in NMOS technology and has no integrated Manchester encoder/decoder (ENDEC) nor does it have an integrated 10BASE-T transceiver. == Compatibility == A later refabricated chip called the C-LANCE Am79C90 is made with 0.8 micrometre CMOS technology. The original NMOS version Am7990 and the CMOS Am79C90 version are differ in some details which may have an impact on device driver compatibility. The datasheet for the CMOS version writes that the CMOS and NMOS versions are the same. But the "Table B-1. Comparison Summary of the C-LANCE and LANCE Devices" in the datasheet shows they differ. These differences are not likely to require modifications of any device driver. The PCnet family of Ethernet controllers (PCnet-ISA II, PCnet-32, PCnet-PCI II and PCnet-FAST) is LANCE software compatible. This means you should be able use the original 16-bit software on these members of the PCnet family of single-chip Ethernet controllers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「AMD Lance Am7990」の詳細全文を読む スポンサード リンク
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