INS8257
INS8257 is Programmable DMA Controller manufactured by National Semiconductor.
~National
~ Semiconductor
Preliminary
JULY 1978.
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INS8257 Programmable DMA Controller
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General Description
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The INS8257 is a Direct Memory Access (DMA) con- troller contained in a standard 40- pin dual- in- line
The channel control registers consist of four 16- bit DMA address registers and four 16- bit terminal count
3 3 package. The chip, which is fabricated using
(TC) registers. These registers provide the means for
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N- channel silicon gate technology, performs direct con- trolling DMA transfers on their respective
C" control of high speed data transfers to and from channels.
CD memory over four separate channels. Data can be transferred in single bytes or in...
