Local Bus and PC Motherboard
The main problem with the PC, ISA and EISA busses is that the transfer rate is normally much slower than the system clock. This is wasteful in processor time and generally reduces system performance. For example, if the system clock is running at 50 MHz and the EISA interface operates at 8 MHz then for 84% of the data transfer time the processor is doing nothing. This chapter discusses the main local busses and the next discusses motherboard design.
KeywordsBurst Mode Parallel Port Configuration Address Read Access Interrupt Line
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