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EISA Enterprise-II
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Actual Entry (non editable)
EISA Enterprise-II (c) 199? AMI [American Megatrends, Inc.] The Enterprise-II is a pioneering, full-sized AT motherboard that was one of the first to implement the EISA bus specification. Unlike the later Enterprise-III/IV, which balanced multiple buses (VLB/PCI), the Enterprise-II was almost entirely EISA-focused. It was the board that convinced many early 1990s system integrators that 32-bit bus-mastering was the future of high-end computing, even if it meant abandoning the simple "plug-and-play" nature of standard ISA. - TECHNICAL - Chipset: Original AMI "Enterprise" chipset (pre-dating the more refined logic found in the III and IV). CPU Support: Socket 3 (primarily designed for 486DX, with support for the early 486DX2s). Expansion: 8x EISA slots (standard 32-bit bus-mastering slots). It was notoriously devoid of VLB or PCI slots, relying entirely on the EISA bus for all high-speed I/O. Memory: 8x 30-pin SIMM sockets (typically restricted to 64 MB maximum, which was enormous at the time). Form Factor: Full-size AT, featuring a very distinct layout that often required "tower" cases to accommodate the large number of EISA cards. - TRIVIA - The "32-Bit" Pioneer: This board was the proving ground for AMI’s EISA BIOS code. If you were running an early Unix or Novell NetWare server in 1991, there is a very high probability it was running on an Enterprise-II. The EISA "Pain": This board is famous for its requirement of the !AMI0000.CFG (and related) setup files. If you didn't have the specific setup floppy, you couldn't configure the motherboard's IRQ routing. It remains one of the most frustrating experiences for modern retro-collectors who find one of these boards in a "bare" state. - SOURCES - Machine's Bios.
Your Changes (editable)
EISA Enterprise-II (c) 199? AMI [American Megatrends, Inc.] The Enterprise-II is a pioneering, full-sized AT motherboard that was one of the first to implement the EISA bus specification. Unlike the later Enterprise-III/IV, which balanced multiple buses (VLB/PCI), the Enterprise-II was almost entirely EISA-focused. It was the board that convinced many early 1990s system integrators that 32-bit bus-mastering was the future of high-end computing, even if it meant abandoning the simple "plug-and-play" nature of standard ISA. - TECHNICAL - Chipset: Original AMI "Enterprise" chipset (pre-dating the more refined logic found in the III and IV). CPU Support: Socket 3 (primarily designed for 486DX, with support for the early 486DX2s). Expansion: 8x EISA slots (standard 32-bit bus-mastering slots). It was notoriously devoid of VLB or PCI slots, relying entirely on the EISA bus for all high-speed I/O. Memory: 8x 30-pin SIMM sockets (typically restricted to 64 MB maximum, which was enormous at the time). Form Factor: Full-size AT, featuring a very distinct layout that often required "tower" cases to accommodate the large number of EISA cards. - TRIVIA - The "32-Bit" Pioneer: This board was the proving ground for AMI’s EISA BIOS code. If you were running an early Unix or Novell NetWare server in 1991, there is a very high probability it was running on an Enterprise-II. The EISA "Pain": This board is famous for its requirement of the !AMI0000.CFG (and related) setup files. If you didn't have the specific setup floppy, you couldn't configure the motherboard's IRQ routing. It remains one of the most frustrating experiences for modern retro-collectors who find one of these boards in a "bare" state. - SOURCES - Machine's Bios.
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