A number of major computer manufacturers turned to the Video Electronics Standards Association to develop an inexpensive,
fast 32-bit bus connector that could be easily implemented within standard PC architechture. The VESA-Local Bus provides 2
to 3 specialized 32-bit bus connectors on what would normally be an ISA motherboard. A third connector is added to the
standard 16-bit ISA bus connector, and this connector passes 32-bits of data at a time directly to the CPU, bypassing the
DMA and Interrupt controller chips. The data is passed to the CPU at the speed of the CPU, rather than at the 7.16 MHz
speed at which the DMA and Interrupt controller chips are running. VESA-Local Bus devices would include video cards,
drive interface cards, and SCSI host adapters; these devices would benefit from the added speed and bandwidth the VESALocal
Bus connector provides. Other devices (sound cards, modems) do not require fast bus connections, and would be
inserted into standard ISA bus connectors.


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