INS8257 Datasheet (National Semiconductor) - Programmable DMA Controller

INS8257, Programmable DMA Controller

;; 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) regist

INS8257 Features

* Four

* Channel DMA Controller

* Priority DMA Request Logic ..-a.g::.:s. CD registers (one pair per channel). A status register is also Included, which provides terminal count status

* Channel Inhibit Logic for each channel. The status register also contains a