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Bookmark or Share- 为什么Dma请求优先级高于中断请求? - 知乎区分dma请求和dma中断。 dma请求是申请总线传数据，在非屏蔽中断发起后（比如断电），此时cpu会紧急保存数据，而dma请求就是数据之一，如果不及时处理就会数据丢失。 dma中断是完成了任务后向cpu汇报。dma中断属于外中断中的可屏蔽中断。优先级较低。
- Nielsen DMA and Market Resources Data ~ Update 11/07/2024The MARKET DATA Excel is a Directv Designated Marketing Area (DMA) database with status and reference information, including a complete history of Directv's Local-Into-Local implementation. The most current version of the DIRECTV Market Data will always be found in the 'DMA and Market Resources' Thread HERE
- DMA's-what should exist, and what shouldn't? | DBSTalk ForumHowever in Indiana you have WLFI 18 CBS in Lafayette, IN (owned by LIN) as its own 3 county DMA. All other network affiliates come from Indianapolis including LIN's other CBS station WISH-TV 8. The 3 counties in the Lafayette are considered in that DMA and cannot get Indianapolis stations via satellite because of it.
- The San Bernardino / Riverside DMA | DBSTalk ForumDMA's are the markets defined by Neilsen for ratings and advertising purposes. So the networks may want to limit the number of affiliates they have in each market in order to reduce rating dilution. As far as I know, the FCC only uses DMAs for carriage and must-carry rules.
- Multiple DMA Support for HR20 | DBSTalk ForumOn my H10, I put in my zip code, which got my primary DMA of louisville, KY. Then on my secondary, I put in a zip code near Cincinnati, and I get all the channels from there. Then I went back in and changed the secondary to a zip code near indianapolis and it picked up all the channels from Indy, but kept the Cincy channels.
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