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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 0001:  Power Supplies - System Board
      9  XI  Expansion Buses

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VESA Local Bus (VLB)
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Extended ISA (EISA)

Nine third party 'heavyweight' computer manufacturers got together and created the competitive answer to MCA. That answer was Extended Industry Standard Architecture (EISA). This open alternative was backwards compatible to 8-bit ISA as well as 16-bit ISA cards. Transfer rates screamed along at 33 MB a second.

Figure 26: 80486 system board with four 8/16-bit ISA slots (top) and two EISA slots. The connector below the BIOS chips and two empty sockets (upper left) is a custom slot to enhance this once powerful system board, designed to be a server or high-end workstation.

 


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VESA Local Bus (VLB)
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