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Cycle stealing is used in "word-at-a-time" mode of DMA transfer, in which DMAC gets system bus from CPU for a CPU cycle on requesting CPU to transfer a word. If CPU doesn't need the bus for current cycle it can lend it to DMA controller. On using bus for one CPU cycle DMAC returns the bus. With cycle stealing CPU won't remain idle when it requires system bus. But DMA transfer is relatively slower. January 2006 : January - February - March - April - May - June - July - August - September - October - November - December- → 31 January 2006 (Tuesday) U.S. President George W. Bush delivers the State of the Union Address to a joint session of the U.S. Congress (the House of Representatives and the Senate). ...
The cyclesteal storage request trigger 311 is reset by a signal from the storage unit 31 on line 313 signalling the end of the storage sequence for the cyclesteal operation.
The cyclesteal signal 286 and a binary 1 indication on the output/input indicator 57 are effective at an AND circuit 318 to activate interface gate C 103 of FIG.
The cyclestealcycle signal 286 is also applied to an AND circuit 325 along with the binary state of the word/byte indicator 58 for the purpose of indicating to the storage unit 31, on line 326, whether the storage is being cycled for a byte or full word transfer.
Cycle of the moon, called "Meton's Cycle," from Meton, who discovered it, is a period of nineteen years, at the expiration of which time the phases of the moon repeat themselves on the same days as they did nineteen years previously.
The Metonic cycle in astronomy and calendar studies is an approximate common multiple of the orbital periods of the Earth and the Moon.
The 19-year cycle is also close (to somewhat more than half a day) to 255 draconic months, so it also is an eclipse cycle, which lasts only for about 4 or 5 recurrences of eclipses.
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