An Introduction to Microcomputers

An Introduction to Microcomputers

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The high order byte of the memory address is output via the data pins DO - D7 of the 8257 device. ... Though not shown in the timing diagram illustrated above, the ADD STB high pulse ( ^Q) above) will cause the ... There are two signals output by the 8257 device which are very valuable when transferring blocks of data via DMA; these two ... To the programmer, the 8257 DMA Controller will appear to.

Title:An Introduction to Microcomputers
Author: Adam Osborne
Publisher: - 1977

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