Episode 90 - Where Did The S100 Bus Go?
Advent of Computing
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The Advantages of a Standard S 100 Expansion Card
The standardized s 100 bus offered provisions for how d m a should be handled, but implementation was left up to individual cards. The bus wasn't the active participant in apples designd. This set up also means you can only have one card initiate d m a at a time. There was also the boring administrative side to this type of bus.
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